TY - CONF A1 - Mishra, Kirti Bhushan T1 - Investigations of BLEVE (Boiling Liquid Expanding Vapour Cloud Explosion) and fireballs of peroxy-fuels and hydrocarbons: Experiments and CFD simulation T2 - 12th International Conference on Combustion and Energy Utilisation (ICCEU) CY - Lancaster, England DA - 2014-09-29 PY - 2014 AN - OPUS4-31585 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mishra, Kirti Bhushan T1 - Rheinland refinery accident 2014: CFD prediction of atmospheric dispersion of smoke T2 - Combustion Research and Application 2014 CY - Soesterberg, Netherlands DA - 2014-10-08 PY - 2014 AN - OPUS4-31586 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schmidt, Simon A1 - Mishra, Kirti Bhushan A1 - Wehrstedt, Klaus-Dieter T1 - CFD simulations to predict the thermal safety distances from jet fires of peroxy-fuels N2 - CFD (Computational Fluid Dynamics) simulations have been carried out to investigate the behavior of turbulent, subsonic jet fires of the peroxy-fuel Di-tert-butyl peroxide (DTBP) using the SAS-SST turbulence model, the discrete transfer radiation model, the eddy dissipation combustion model and the Magnussen soot model. Safety relevant parameters, such as flame length, temperature and thermal radiation are predicted to give recommendations on safety distances. T2 - 4. Magdeburger Brand- und Explosionsschutztag / 3. vfdb-Workshop Brandschutzforschung CY - Magdeburg, Germany DA - 26.03.2015 KW - CFD simulations KW - Thermal safety distances KW - Jet fires KW - Peroxy-fuels PY - 2015 SN - 978-3-00-048960-0 SP - 1 EP - 12 AN - OPUS4-33283 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mishra, Kirti Bhushan A1 - Wehrstedt, Klaus-Dieter T1 - Rheinland refinery accident 2014: CFD prediction of atmospheric dispersion of smoke N2 - Industrial fire and explosion hazards are most often also associated with the dispersion of toxic substances. These substances can be gases, liquids, solids or in form of aerosols. The critical toxic exposure limits to People and enviroment from such substances are regulated by the concerned authorities of the countries. In order to comply with the defined regulation estimation of such critical limits must be carried out by different semi-empirical and phenomenological models/methods for risk assessment. Many of such methods provide a qualitative estimation of time and space dependent extrimities of toxicity. The overwhelm development of computational capacity has made it possible to perform Computational Fluid Dynamics (CFD) simulation by solving the three-dimensional transport equations for mass momentum and species in lower and upper atmosphere, respectively. CFD simulation not only provides a detailed 3D distribution of toxic particulates/gases in the neighbourhood of the plant but also helps to study the worst-case sceanrios. In the past several small- and large-scale accidents occured in oil and gas plants in different parts of the world including the recent one in Rheinland refinery near Cologne in Germany. This work deals with this accident and provides a methodology to predict the critical exposure limits of smoke emitted by a toluene tank fire by means of CFD simulation. T2 - COMBURA 2014 - Combustion research and application symposium CY - Soesterberg, The Netherlands DA - 08.10.2014 KW - CFD KW - Retinery incident KW - Smoke dispersion PY - 2014 SP - 56 EP - 57 AN - OPUS4-31721 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mishra, Kirti Bhushan T1 - An overview of recent research activities at BAM 2.2 T2 - IGUS EOS Meeting CY - Nanjing, China DA - 2014-04-09 PY - 2014 AN - OPUS4-30555 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Mishra, Kirti Bhushan A1 - Wehrstedt, Klaus-Dieter T1 - Spill-over characteristics of peroxy-fuels: Two-phase CFD investigations N2 - Two-phase CFD (Computational Fluid Dynamics) model for characterising the spill-over/dispersion of peroxy-fuels is presented. The model is independent of type and burning rate of the spilled/dispersed fuel and considers only overflow Reynolds number (Re) to characterise the spill/dispersion behaviour. Additional simulations are performed for LNG (Liquified Natural Gas) dispersion and it is found that the model can be used for different fuels within a defined range of Re. Different scenarios with Re = 100 to 3 × 105 are investigated covering a wide range of mass flow rates, opening sizes and viscosities. Depending on Lower Flammability Limits (LFL) of the fuels spill/dispersion (vapour cloud) diameters (DCFD) and heights (hCFD) are predicted. A generalised correlation between DCFD and Re is established to predict the dispersion occurring at varying scales. The model is validated by: (1) conducting an extensive grid independent study; (2) comparing the results with the existing analytical methods and (3) comparing against the standard field test data on LNG dispersions. KW - Spill-over KW - Dispersion KW - Peroxy-fuels KW - CFD KW - Reynolds number KW - Liquefied natural gas PY - 2014 DO - https://doi.org/10.1016/j.jlp.2014.02.014 SN - 0950-4230 SN - 1873-3352 VL - 29 SP - 186 EP - 197 PB - Butterworth CY - Guildford, Surrey AN - OPUS4-30481 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Malow, Marcus A1 - Wehrstedt, Klaus-Dieter A1 - Mishra, Kirti Bhushan A1 - Steinbach, J. T1 - Thermische Zersetzung von AIBN - Experimente und Simulationen zur Bestimmung der SADT N2 - Die thermische Zersetzung von AIBN wurde in einem Projekt mit mehreren Teilnehmern untersucht. Hierbei wurde die selbstbeschleunigende Zersetzungstemperatur SADT) sowohl experimentell als auf Grundlage von Simulationsrechnungen bestimmt. Die Besonderheit bei dem Feststoff AIBN ist, dass die Zersetzung sowohl in der festen, als auch in der flüssigen Phase nach dem Schmelzen stattfindet, was bei den durchgeführten Simulationsrechnungen berücksichtigt werden musste. Die berechneten SADT Werte stimmen mit den experimentell bestimmten sehr gut überein. T2 - 14. BAM-PTB-Kolloquium zur chemischen und physikalischen Sicherheitstechnik CY - Berlin, Germany DA - 14.06.2016 KW - SADT KW - Reaktionskinetik KW - AIBN KW - DSC KW - UN-Test H.1 KW - UN-Test H.4 PY - 2016 SN - 978-3-9817853-5-7 SN - 0938-5533 SP - 54 EP - 59 PB - Bundesanstalt für Materialforschung und -prüfung (BAM) CY - Berlin AN - OPUS4-37878 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Blankenhagel, Paul A1 - Wehrstedt, Klaus-Dieter A1 - Mishra, Kirti Bhushan A1 - Steinbach, J. T1 - Feuerbälle organischer Peroxide: Thermische Strahlung und Sicherheitsabstände N2 - Das Abbrandverhalten und die thermische Strahlung von Poolfeuern organischer Peroxide (OP) wurden bereits in der Vergangenheit ausführlich untersucht. Dabei ergaben sich zum Teil erhebliche Unterschiede hinsichtlich der Abbrandraten, Temperaturen, Strahlungsintensitäten und Flammenlängen im Vergleich zu flüssigen Kohlenwasserstoffen. Das größere Gefahrenpotenzial von OP führt zu strikteren Sicherheitsbestimmungen für Lagerung und Transport. Da das Gefahrenpotenzial maßgeblich von den tatsächlich auftretenden Szenarien abhängt, ist eine Bewertung solcher Ereignisse unumgänglich um nachhaltig die Gesundheit von Mensch und Umgebung zu sichern. Ein Metallfass, gefüllt mit 200 Litern DTBP (Di-tertiär-butylperoxid), wurde auf dem Testgelände Technische Sicherheit der BAM einem Außenfeuer ausgesetzt. Durch den starken Wärmeeintrag erhöht sich die Massenabbrandrate des Peroxids um ein Vielfaches und das Fass entleert sich schließlich unter Ausbildung mehrerer Feuerbälle. Die Flammengröße, Flammentemperatur und damit die thermische Strahlung überschreiten die der gewöhnlichen OP-Poolfeuer. Die resultierenden höheren Sicherheitsabstände sind abschließend berechnet. T2 - 14. BAM-PTB-Kolloquium zur chemischen und physikalischen Sicherheitstechnik CY - Berlin, Germany DA - 14.06.2016 KW - DTBP KW - Feuerbälle KW - Organische Peroxide KW - Thermische Strahlung PY - 2016 SN - 978-3-9817853-5-7 SN - 0938-5533 SP - 126 EP - 133 PB - Bundesanstalt für Materialforschung und -prüfung (BAM) CY - Berlin AN - OPUS4-37881 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Mishra, Kirti Bhushan T1 - CFD model for large hazardous dense cloud spread predictions, with particular reference to Bophal disaster N2 - A volumetric source based CFD (Computational Fluid Dynamics) model for estimating the wind and gravity driven spread of an elevated released dense hazardous cloud on a flat terrain without and with obstacles is demonstrated. The model considers the development of a worst-case scenario similar to that occurred at Bhopal. Fully developed clouds of a dense gas having different densities, under ABL (Atmospheric Boundary Layer) with calm ground wind conditions are first obtained. These clouds are then allowed to spread under ABL with different ground wind speeds and gravity conditions. The developed model is validated by performing the grid independent study, the fluid dynamical evidences, post-disaster facts, the downwind MIC (Methyl Isocynate) concentrations estimated by earlier models and experiments on dense plume trajectories. It is shown that in case of an active dispersion under calm wind conditions the lateral spread would prevail over the downwind spread. The presence of a dense medium behaves like a weak porous media and initiates turbulence at much smaller downwind distances than that normally would occur without the dense medium. The safety distances from toxic exposures of MIC are predicted by specifying an isosurface of a minimum concentration above the ground surface. Discrepancies in near-field predictions still exist. However, the far-field predictions agree well with data published before. KW - CFD model KW - Dense cloud KW - Safety distance KW - Porous medium KW - Bhopal disaster PY - 2015 DO - https://doi.org/10.1016/j.atmosenv.2015.06.038 SN - 0004-6981 SN - 1352-2310 VL - 117 SP - 74 EP - 91 PB - Elsevier Ltd. CY - Amsterdam AN - OPUS4-33807 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Mishra, Kirti Bhushan A1 - Wehrstedt, Klaus-Dieter T1 - Diffusive burning of blended peroxy-fuels: Some experimental results N2 - Dampening of energetic properties and the effects of blending proportions of isododecane on the diffusive burning behaviour of peroxy-fuels are experimentally studied. Blended peorxy-fuels are obtained by adding isododecane in the proportions of 25 wt.%, 50 wt.% and 75 wt.%, respectively, in technical pure peroxy-fuels. The fuels were burned in form of pool fires with diameters 0.02 m ≤ d ≤ 1 m. The mass burning rates and relative flame lengths are found to be weakened with increasing diluent proportions. By measuring the mass burning rates and visible flame lengths of pool fires of different samples of fuel blends an optimum blending criterion is developed. Furthermore, it is shown that the dilution proportions and flame characteristics can be correlated by empirical equations. KW - Peroxy-fuels KW - Blends KW - Isododecan KW - Pool fire KW - Mass burning rate KW - Flame length PY - 2015 DO - https://doi.org/10.1016/j.fuproc.2015.06.014 SN - 0016-2361 SN - 0378-3820 SN - 1873-7153 VL - 140 SP - 324 EP - 330 PB - Elsevier B.V. CY - Amsterdam AN - OPUS4-34950 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Mishra, Kirti Bhushan A1 - Wehrstedt, Klaus-Dieter T1 - Underground gas pipeline explosion and fire: CFD based assessment of foreseeability N2 - Scenarios of underground gas pipeline failure, crater formation, dispersion of gas, explosion and subsequent fires are investigated with semi-empirical and with CFD (Computational Fluid Dynamics) modelling. In order to strengthen the accident based learning approaches present investigations are performed in the context of recent GAIL (Gas Authority of India Limited) natural gas pipeline incident occurred in India. The foreseeability of damages to lives of people and assets due to explosion overpressure and thermal radiation are assessed. The released gas is considered as slightly dense-than-air i.e. 1.5 times. Depending on the LFL (Lower Flammability Limit) of gas the dispersion diameter and heights are predicted which followed the visual evidences appropriately. The model was furthermore tested with an even denser medium and was found to be worked well there too. The estimated explosion overpressures with the standard methods and also with CFD reproduced the scenario nicely. The effects of congestion VBR (Volume Blockage Ratio) in form of vegetation on stable atmospheric boundary layer flow is analysed and its contribution towards turbulence and hazard enhancement is studied. It is found that the major source of fatalities was higher thermal radiation emitted by pool fires of methane. The estimated thermal safety distances clearly demonstrate the ignorance/under estimation of likelihood and consequence of such hazardous events. For such incidents CFD demonstrated a strong capability to assess the pre or/and post events foreseeabilities within a reasonable amount of time and with an acceptable level of accuracy meeting the industrial needs for risk analysis. KW - Natural gas KW - Underground pipeline KW - Dense gas dispersion KW - Explosion and fire KW - CFD KW - Safety distance PY - 2015 DO - https://doi.org/10.1016/j.jngse.2015.04.010 SN - 1875-5100 VL - 24 SP - 526 EP - 542 PB - Elsevier CY - Amsterdam [u.a.] AN - OPUS4-33671 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mishra, Kirti Bhushan T1 - On dynamics of organic peroxides pool flames T2 - 35th National Conference on Fluid Mechanics and Fluid Power CY - Bangalore, India DA - 2008-12-11 PY - 2008 AN - OPUS4-18684 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mishra, Kirti Bhushan A1 - Wehrstedt, Klaus-Dieter A1 - Schönbucher, A. ED - K.N. Seetharamu, ED - T.R. Seetharam, ED - Pradeep G. Hedge, ED - H.M. Mallikarjuna, T1 - On the dynamics of organic peroxide pool flames T2 - 35th National Conference on Fluid Mechanics and Fluid Power CY - Bangalore, India DA - 2008-12-11 KW - Peroxide and kerosene pool flames KW - Froude number KW - CFD (Computational Fluid Dynamics) PY - 2008 IS - FMFP 08 - 076 SP - 643 EP - 650 CY - Bangalore, India AN - OPUS4-18690 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mishra, Kirti Bhushan T1 - Experimental and numerical investigations of pool flames of organic peroxides T2 - 1st Peer Training - Meeting on Applied Scientific Computing and Tools CY - Rome, Italy DA - 2008-10-21 PY - 2008 AN - OPUS4-18640 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mishra, Kirti Bhushan T1 - A numerical revisit of large organic peroxide fire test T2 - Viertes gemeinsames wissenschaftliches Kolloquium der Uni Duisburg-Essen, Institut für technische Chemie I, und der BAM, Abteilung II "Chemische Sicherheitstechnik" CY - Essen, Germany DA - 2007-11-29 PY - 2007 AN - OPUS4-17770 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mishra, Kirti Bhushan T1 - Pool flames of organic peroxides - experimental and CFD study T2 - 32nd International Symposium on Cumbustion CY - Montreal, Canada DA - 2008-08-03 PY - 2008 AN - OPUS4-17771 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mishra, Kirti Bhushan T1 - An introduction to pool fire characteristics of organic peroxides T2 - 4th Joint Colloquium of the Department II Chemical Safety Engineering of BAM and the Institute of Technical Chemistry I of the University of Duisburg-Essen, BAM CY - Berlin, Germany DA - 2009-07-24 PY - 2009 AN - OPUS4-19784 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mishra, Kirti Bhushan T1 - Characterization of large pool fires of organic compounds containing oxygen atoms T2 - 13th International Symposium on Loss Prevention and Safety Promotion in the Process Industries CY - Bruges, Belgium DA - 2010-06-06 PY - 2010 AN - OPUS4-21435 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Mishra, Kirti Bhushan A1 - Wehrstedt, Klaus-Dieter A1 - Schönbucher, A. ED - Suter, G. ED - de Rademaeker, E. T1 - Characterization of large pool fires of organic compounds containing oxygen atoms T2 - 13th International symposium on loss prevention and safety promotion in the process industries CY - Brugge, Belgium DA - 2010-06-06 KW - Pool fire KW - Hydrocarbons KW - Alcohols KW - Ketones KW - Organic peroxides KW - Fire characteristics PY - 2010 SN - 978-90-76019-291 VL - I SP - 365 EP - 372 CY - Brugge, Belgium AN - OPUS4-21552 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mishra, Kirti Bhushan A1 - Wehrstedt, Klaus-Dieter A1 - Schönbucher, A. T1 - Pool and tank fires - Are we really prepared? N2 - The industrial fire accidents e.g. Buncefield (2005) and Jaipur (2009) have come up with several issues concerning safe storage and transportation of flammable liquids. The pre and post fire consequences are therefore important to be analyzed prior to the handling of flammable fuels. Pool or/and tank fire is the most often seen scenario after the leak/spill of liquid fuel. An overview of the typical scenarios from large hydrocarbon and organic peroxide pool fires and their respective safety distances for the people and the infrastructure are the important subjects of this paper. T2 - 8th Asia-Pacific conference on combustion CY - Hyderabad, India DA - 2010-12-10 KW - Flammable liquids KW - Pool fire KW - Safety distance KW - Organic peroxides PY - 2010 SP - 697 EP - 702 AN - OPUS4-23004 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mishra, Kirti Bhushan T1 - Safety characterization of pool flames of organic peroxides T2 - 9th International IAFSS (International Association for Fire Safety Science) Symposium CY - Karlsruhe, Germany DA - 2008-09-21 PY - 2008 AN - OPUS4-17930 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mishra, Kirti Bhushan T1 - Experimental and numerical investigations of pool flames of organic peroxides T2 - Institute for Combustion and Gas dynamics Pool flames, TBPB, TBPEH, CFD, University of Duisburg-Essen CY - Duisburg, Germany DA - 2009-09-29 PY - 2009 AN - OPUS4-20028 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mishra, Kirti Bhushan T1 - Numerical studies of the pool fire characteristics of organic peroxides T2 - MASCOT 2009, 9th Meeting on Applied Scientific Computing and Tools CY - Rome, Italy DA - 2009-10-28 PY - 2009 AN - OPUS4-20234 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mishra, Kirti Bhushan A1 - Wehrstedt, Klaus-Dieter A1 - Schönbucher, A. T1 - Safety aspects of organic peroxide pool fires T2 - COMBURA 2010 - Combustion research and application CY - Maastricht, The Netherlands DA - 2010-10-12 KW - Pool fire KW - Organic peroxides KW - TBPB KW - TBPEH KW - CFD KW - Safety distances PY - 2010 SP - 11 EP - 12 AN - OPUS4-22484 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mishra, Kirti Bhushan T1 - Pool and tank fires - Are we really prepared? T2 - Eighth Asia-Pacific Conference on Combustion (ASPACC-10) CY - Hyderabad, India DA - 2010-12-10 PY - 2010 AN - OPUS4-22741 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mishra, Kirti Bhushan T1 - Combustion of peroxy-fuels T2 - ERCOFTAC Conference: Highly Resolved Experimental and Numerical Diagnostics for Turbulent Combustion (HRTC-1) CY - Rouen, France DA - 2011-05-25 PY - 2011 AN - OPUS4-23734 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wehrstedt, Klaus-Dieter A1 - Mishra, Kirti Bhushan T1 - Safety considerations for organic peroxide fires T2 - IGUS Energetic and Oxidizierung Substances (EOS) Working Group Meeting CY - Washington, D.C., USA DA - 2011-04-27 PY - 2011 AN - OPUS4-23572 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mishra, Kirti Bhushan T1 - Pool flames of organic peroxides: experiments and CFD simulations T2 - 9. Fachtagung "Anlagen-, Arbeits- und Umweltsicherheit" CY - Köthen, Germany DA - 2008-11-06 PY - 2008 AN - OPUS4-18292 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mishra, Kirti Bhushan T1 - Radiative characteristics of large pool fires of organic peroxides T2 - 4th European Combustion Meeting CY - Vienna, Austria DA - 2009-04-14 PY - 2009 AN - OPUS4-19306 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mishra, Kirti Bhushan T1 - Safety characteristics of large pool fires of organic peroxides T2 - ProcessNet-Arbeitsausschuss "Sicherheitstechnische Kenngrößen" CY - Frankfurt am Main, Germany DA - 2009-03-31 PY - 2009 AN - OPUS4-19308 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mishra, Kirti Bhushan A1 - Wehrstedt, Klaus-Dieter A1 - Schönbucher, A. T1 - Radiative characteristics of large pool fires of organic peroxides T2 - 4th European Combustion Meeting (Proceedings) CY - Vienna, Austria DA - 2009-04-14 KW - Pool fire KW - TBPB KW - TBPEH KW - CFD KW - Temperature KW - Surface emissive power KW - Irradiance PY - 2009 SN - 978-3-902655-06-6 SP - 1 EP - 6(?) PB - ProcessEng Engineering GmbH CY - Vienna AN - OPUS4-19400 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mishra, Kirti Bhushan T1 - Pool Fires of Organic Peroxides: Experimental and CFD Study T2 - IGUS Energetic and Oxidising Substances (EOS) Working Group Meeting CY - Saint Petersburg, Russia DA - 2009-06-10 PY - 2009 AN - OPUS4-19503 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mishra, Kirti Bhushan T1 - Turbulent Combustion in Pool Fires of Organic Peroxides T2 - von Karman Institute for Fluid Dynamics, Lecture Series on "Turbulent Combustion" CY - Sint-Genesius-Rode, Belgium DA - 2009-05-25 PY - 2009 AN - OPUS4-19505 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mishra, Kirti Bhushan T1 - Impact of fuel properties on the large pool fire (hydrocarbons and organic peroxides) characteristics T2 - 6th U. S. National Combustion meeting CY - Ann Arbor, MI, USA DA - 2009-05-17 PY - 2009 AN - OPUS4-19475 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Mishra, Kirti Bhushan A1 - Wehrstedt, Klaus-Dieter A1 - Schönbucher, A. T1 - Numerical prediction of safety distances from large pool fires of organic peroxides N2 - Organic peroxides are energetic substances liable to decompose due to exothermic reactions when exposed to uncontrolled temperature, contamination, confinement and quantity. Their safe storage and transportation are the prime concern and chemical industries and regulating authorities. Their accidental release may and most often lead to shape of a pool. In present study, safety distances from such large pool fires (diameter d = 3.4 m) of organic peroxides are numerically predicted by solving the reactive, 3-D time dependent Navier-Stokes equations with reliable assumptions. The present model is validated against the data on buoyant turbulent diffusion flames. The safety distances predicted by simulation assume three regions in a fully developed fire i.e. hot spot, luminous zone and a flame surface. The time averaged data of temperatures of these regions lead to better estimation of irradiances against the measured data. A developed sphere analogy method (for a special class of organic peroxides) for maximum surface emissive power prediction is also verified. T2 - 40th International annual conference of ICT - Energetic Materials - Characterisation, Modelling and Validation CY - Karlsruhe, Germany DA - 2009-06-23 KW - Organic peroxides KW - Safety distances KW - Navier-stokes equations KW - Irradiance KW - Surface emissive power PY - 2009 SN - 0722-4087 SP - 88-1 - 88-14 PB - DWS Werbeagentur und Verlag GmbH CY - Pfinztal (Berghausen) AN - OPUS4-19599 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mishra, Kirti Bhushan T1 - Numerical prediction of safety distances from large pool fires of organic peroxides T2 - 40th Annual Conference of ICT, Energetic Materials - Characterisation, Modelling and Validation CY - Karlsruhe, Germany DA - 2009-06-23 PY - 2009 AN - OPUS4-19578 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Vela, I. A1 - Chun, Hyunjoo A1 - Mishra, Kirti Bhushan A1 - Gawlowski, M. A1 - Sudhoff, P. A1 - Rudolph, Michael A1 - Wehrstedt, Klaus-Dieter A1 - Schönbucher, A. T1 - Vorhersage der thermischen Strahlung großer Kohlenwasserstoff- und Peroxid-Poolfeuer mit CFD Simulation KW - CFD Simulation KW - Poolfeuer KW - JP-4 KW - Kerosin KW - Di-tert-butylperoxid KW - Thermische Strahlung PY - 2009 DO - https://doi.org/10.1007/s10010-009-0094-3 SN - 0015-7899 SN - 1434-0860 VL - 73 IS - 2 SP - 87 EP - 97 PB - Springer CY - Berlin AN - OPUS4-19531 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mishra, Kirti Bhushan T1 - Prediction of burning rate of an accidentally released flammable fuel by means of CFD simulation T2 - Seventh International Conference on CFD in the Minerals and Process Industries CSIRO CY - Melbourne, Australia DA - 2009-12-09 PY - 2009 AN - OPUS4-20635 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mishra, Kirti Bhushan T1 - Measurement and CFD Prediction of Gas Velocities and Temperatures in Large Pool Fires of Organic Peroxides T2 - 36th National Conference on Fluid Mechanics and Fluid Power (NCFMP-2009) CY - Pune, India DA - 2009-12-17 PY - 2009 AN - OPUS4-20749 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Mishra, Kirti Bhushan A1 - Wehrstedt, Klaus-Dieter A1 - Schönbucher, A. ED - Witt, P. J. ED - Schwarz, M.P. T1 - Prediction of burning rate of an accidentally released flammable fuel by means of CFD simulation T2 - 7th International Conference on CFD in the minerals and process industries CY - Melbourne, Australia DA - 2009-12-09 KW - Mass burning rate KW - CFD simulation KW - TBPB KW - TBPEH KW - Turbulent fire KW - Fuel Froude number PY - 2009 SN - 978-0-643-09825-1 SP - 1 EP - 7 AN - OPUS4-20768 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mishra, Kirti Bhushan A1 - Wehrstedt, Klaus-Dieter A1 - Schönbucher, A. T1 - Measurement and CFD prediction of gas velocities and temperatures in large pool fires of organic peroxides T2 - 36th National conference on fluid mechanics and fluid power - NCFMFP-2009 CY - Pune, India DA - 2009-12-17 KW - Pool fire KW - TBPB KW - TBPEH KW - Froude number KW - CFD (Computational fluid dynamics) PY - 2009 IS - Paper 58-CFD-5 SP - 1 EP - 11 AN - OPUS4-20769 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mishra, Kirti Bhushan T1 - Safety aspects of organic peroxide pool fires T2 - CUMBURA 2010 (Combustion Research and Application) CY - Maastricht, Netherlands DA - 2010-10-12 PY - 2010 AN - OPUS4-22093 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mishra, Kirti Bhushan T1 - What do we reliably know about pool fire? T2 - Zweites gemeinsames wissenschaftliches Kolloquium der Uni Duisburg-Essen, Institut für technische Chemie I, und der BAM, Abteilung II "Chemische Sicherheitstechnik" CY - Essen, Germany DA - 2007-04-19 PY - 2007 AN - OPUS4-14777 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mishra, Kirti Bhushan T1 - Interpretations of temperature measurements in organic peroxide pool fires T2 - 5th European Combustion Meeting ECM 2011, Cardiff University CY - Cardiff, Wales DA - 2011-06-29 PY - 2011 AN - OPUS4-24099 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mishra, Kirti Bhushan T1 - An efficient and clean fuel for high temperature process industries T2 - 11th International Conference on Energy for a Clean Environment CY - Lisbon, Portugal DA - 2011-07-05 PY - 2011 AN - OPUS4-24101 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mishra, Kirti Bhushan A1 - Wehrstedt, Klaus-Dieter T1 - Burner for peroxy-fuels (PEROXY-BAM Burner) N2 - A new burner concept (PEROXY-BAM®) for the combustion of liquid organic peroxides (Peroxy-fuels) is presented. As peroxy-fuels are thermally unstable the design of burners for them should be accordingly modified ensuring a safe operation. It is found that 10 to 100 time less amounts of peroxy fuels are required for the same heat flux or output in comparison to hydrocarbons. Correspondingly, the fuel pump power and the volume of combustion chamber (furnace) are also reduced. As a result of less amount of fuel the emissions will also be stepped down and oxygen in the molecule helps to establish conditons like in an oxy-fuel combustion process. The advantages of using peroxy-fuels over hydrocarbons inside a model combustion chamber are also investigated with the help of CFD (Computational Fluid Dynamics) simulations. T2 - 25. Deutscher Flammentag - Verbrennung und Feuerung CY - Karlsruhe, Germany DA - 14.09.2011 KW - Organic peroxide KW - Peroxy-fuel KW - Burner concept KW - Combustion KW - Combustion chamber PY - 2011 SN - 978-3-18-092119-8 SN - 0083-5560 N1 - Serientitel: VDI-Berichte – Series title: VDI-Berichte VL - 2119 SP - 307 EP - 312 PB - VDI-Verl. AN - OPUS4-24388 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mishra, Kirti Bhushan A1 - Wehrstedt, Klaus-Dieter A1 - Schönbucher, A. T1 - Interpretations of temperature measurements in organic peroxide pool fires N2 - Most of the measurements of temperatures in large pool fires are indirect and present a number of complexities due to the interactions of convection, radiation and soot blockage. In the present work these influences for two organic peroxide [tert-butyl peroxybenzoate (TBPB) and tert-butyl peroxy-2-ethylhexanoate (TBPEH)] pool fires are analysed. Thermocouple measured temperature in the clear flame zone i.e. combustion zone are found to be 250-400 K lower than from the thermographic measurements. The convective and radiative heat flux contributions from the fire on temperature measurements are discussed. CFD (Computational Fluid Dynamics) simulations have been performed for large pool fires and the predicted time averaged flame temperatures were found to be in qualitative agreement with measurements due to the stoichiometric combustion model used in the present simulations. T2 - 5th European combustion meeting 2011 CY - Cardiff, UK DA - 28.06.2011 KW - Pool fire KW - Organic peroxides KW - TBPB KW - TBPEH KW - CFD KW - Temperature measurement PY - 2011 UR - http://www.uni-due.de/tchem/as/skripte/paper_mishra_et_al_cardiff_2011.pdf SP - 1 EP - 5 AN - OPUS4-24686 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mishra, Kirti Bhushan A1 - Wehrstedt, Klaus-Dieter T1 - An efficient and clean fuel for high temperature process industries N2 - The use of energetic materials as a main fuel in high temperature process industries are not known to the scientific community as such. This paper highlights some of the features and advantages of using organic peroxides especially di-tert-butyl peroxide (DTBP) in high temperature process industries. The feasibility of using DTBP as a main or supporting fuel in process industries have also been justified with the help of Computational Fluid Dynamics (CFD) simulations. For peroxides requirement of less fuel and air for the same amount of heat flux has been shown. The resulted emission from the combustion of DTBP is also discussed. T2 - 11th Conference on Energy for a Clean Environment CY - Lisbon, Portugal DA - 2011-07-05 KW - Energetic materials KW - Process industries KW - Organic peroxide KW - Di-tert-butylperoxide (DTBP) KW - CFD simulation KW - Emission PY - 2011 UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-247071 SP - 1 EP - 10 AN - OPUS4-24707 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mishra, Kirti Bhushan A1 - Wehrstedt, Klaus-Dieter T1 - Combustion of peroxy-fuels N2 - The diffusion flames of organic peroxides exhibit quite different characteristics than hydrocarbons. What makes them interesting to study is their fast burning behaviour. As a result the flame temperature enhances and so does the thermal radiation. Due to all these they demand safe handling during processing. However, they can be utilised at several places in different industries where a fuel with fast burning, high temperature and intense radiation are desired. Some of the possibilities to use them as a main or supporting fuel in a wide range of industrial utilities are the major content of this paper. T2 - ERCOFTAC conference - Highly resolved experimental and numerical diagnostics for turbulent combustion CY - Rouen, France DA - 25.05.2011 KW - Energetic materials KW - Process industries KW - Organic peroxide KW - Di-tert-butyl peroxide (DTBP) KW - CFD simulation KW - Emission PY - 2011 UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-247083 SP - 1 EP - 5 AN - OPUS4-24708 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mishra, Kirti Bhushan T1 - Burner for peroxy fuels (Peroxy-BAM® Burner) T2 - 25. Deutscher Flammentag - Verbrennung und Feuerung CY - Karlsruhe, Germany DA - 2011-09-14 PY - 2011 AN - OPUS4-24329 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -