TY - CONF A1 - Mishra, Kirti Bhushan A1 - Wehrstedt, Klaus-Dieter 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 A1 - Wehrstedt, Klaus-Dieter 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 - 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 - 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 A1 - Wehrstedt, Klaus-Dieter A1 - Schönbucher, A. 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 - 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 - 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 A1 - Wehrstedt, Klaus-Dieter A1 - Schönbucher, A. 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 -