@incollection{MeierSzaboMotuzetal., author = {Meier, Martin and Szabo, Peter and Motuz, Vasyl and Egbers, Christoph}, title = {Str{\"o}mungsfeldvisualisierung von thermo-elektrodynamischer Konvektion mit einer kombinierten PIV- und Schattentechnik}, series = {Experimentelle Str{\"o}mungsmechanik : 28. Fachtagung, 7.-9. September 2021, Bremen}, booktitle = {Experimentelle Str{\"o}mungsmechanik : 28. Fachtagung, 7.-9. September 2021, Bremen}, publisher = {Deutsche Gesellschaft f{\"u}r Laser-Anemometrie - German Association for Laser Anemometry GALA e.V.}, address = {Karlsruhe}, isbn = {978-3-9816764-7-1}, pages = {6}, language = {de} } @phdthesis{Hasanuzzaman, author = {Hasanuzzaman, Gazi}, title = {Experimental investigation of turbulent boundary layer with uniform blowing at moderate and high Reynolds numbers}, publisher = {BTU}, address = {Cottbus-Senftenberg}, doi = {10.26127/BTUOpen-5566}, pages = {XXIII, 152}, abstract = {Experimental investigation in turbulent boundary layer flows represents one of the canonical geometries of wall bounded shear flows. Utmost relevance of such experiments, however, is applied in the engineering applications in aerospace and marine industries. In particular, continuous effort is being imparted to explore the underlying physics of the flow in order to develop models for numerical tools and to achieve flow control. Within the scope of this Ph. D. topic, application of active control method such as micro-blowing effect in the incompressible, zero pressure gradient turbulent boundary layer was investigated. Turbulent boundary layer flow is particularly interesting as well as challenging due to the presence of different interacting scales which are increasingly becoming significant as the flow inertial conditions keeps growing. Therefore, energy content of the coherent structures in outer layer becomes stronger and necessitates measurements in relatively large Reynolds number. Present control experiments in turbulent boundary layer can be split into two different work segments, where one is objected towards the data measurements in turbulent boundary layer over smooth surface with and without any external perturbation. Here, perturbation is applied in the form of wall normal blowing while keeping the magnitude of blowing very low compared to the free stream velocity. For the subsequent results reported here, magnitude of blowing ratio was varied between 0\%~6\%. In the first part of the present thesis e.g. 0.415×10e+3≤Reτ≤1.160×10e+3, measurements were performed at the Brandenburg University of Technology wind tunnel. Non-intrusive Laser Doppler Anemometry was applied to carry out a series of measurements on a zero pressure gradient flat plate turbulent boundary layer. Blowing ratio through the perforated surface was varied between 0.17\%~1.52\% of the free stream velocity. To a maximum of 50\% reduction in friction drag was achieved. For the measurements on the upper range of the stated Reynolds number, were conducted at the boundary layer wind tunnel. This boundary layer wind tunnel offers a spatially developed turbulent boundary layer over a flat plate within 2.2×10e+3≤Reτ≤5.5×10e+3 with an excellent spatial resolution. With the help of Stereo Particle Image Velocimetry technique, measurement of the velocity components were obtained covering entire boundary layer in streamwise wall normal plane. In addition, time resolved measurements were also obtained in spanwise and wall-normal plane in order to look into the morphology of turbulent structures immediately above the blowing area.}, language = {en} } @misc{LeGalHarlanderBorciaetal., author = {Le Gal, Patrice and Harlander, Uwe and Borcia, Ion-Dan and Le Diz{\`e}s, St{\´e}phane and Chen, J. and Favier, Benjamin}, title = {Instability of vertically stratified horizontal plane Poiseuille flow}, series = {Journal of Fluid Mechanics}, volume = {907}, journal = {Journal of Fluid Mechanics}, number = {R1}, issn = {1469-7645}, doi = {10.1017/jfm.2020.917}, pages = {1 -- 14}, language = {en} } @misc{HallolYousryMerboldetal., author = {Hallol, Zeinab and Yousry, Mohamed and Merbold, Sebastian and Egbers, Christoph}, title = {Time-resolved PIV measurements in fully developed turbulent pipe flow}, series = {25th International Congress of Theoretical and Applied Mechanics Milan (Italy), 22-27 August 2021}, journal = {25th International Congress of Theoretical and Applied Mechanics Milan (Italy), 22-27 August 2021}, isbn = {978-83-65550-31-6}, pages = {1374 -- 1375}, language = {en} } @misc{SzaboMeyerMeieretal., author = {Szabo, Peter and Meyer, Antoine and Meier, Martin and Motuz, Vasyl and Sliavin, Yaraslau and Egbers, Christoph}, title = {Simultaneous PIV and shadowgraph measurements of thermo-electrohydrodynamic convection in a differentially heated annulus}, series = {Technisches Messen}, volume = {89}, journal = {Technisches Messen}, number = {3}, issn = {2196-7113}, doi = {10.1515/teme-2021-0120}, pages = {148 -- 157}, language = {en} } @misc{HallolYousryMerboldetal., author = {Hallol, Zeinab and Yousry, Mohamed and Merbold, Sebastian and Egbers, Christoph}, title = {Effect of High Reynolds Number on the Behaviour of Large and Very Large Scale Motions in Fully Developed Turbulent Pipe Flow}, series = {Fluid Dynamics}, volume = {57}, journal = {Fluid Dynamics}, number = {4}, issn = {0015-4628}, doi = {10.1134/S0015462822040048}, pages = {524 -- 537}, language = {en} } @misc{HasanuzzamanMerboldMotuzetal., author = {Hasanuzzaman, Gazi and Merbold, Sebastian and Motuz, Vasyl and Egbers, Christoph}, title = {Enhanced outer peaks in turbulent boundary layer using uniform blowing at moderate Reynolds number}, series = {Journal of Turbulence}, volume = {23}, journal = {Journal of Turbulence}, number = {1-2}, issn = {1468-5248}, doi = {10.1080/14685248.2021.2014058}, pages = {68 -- 95}, language = {en} } @misc{HallolYousryMerboldetal., author = {Hallol, Zeinab and Yousry, Mohamed and Merbold, Sebastian and Egbers, Christoph}, title = {Experimental investigation to study energetic structures in pipe flow at high Reynolds numbers using POD analysis}, series = {Journal of the Physical Society of Japan}, volume = {91}, journal = {Journal of the Physical Society of Japan}, number = {9}, issn = {0031-9015}, doi = {10.7566/JPSJ.91.094401}, pages = {1 -- 10}, language = {en} } @misc{HarlanderBorciaVinczeetal., author = {Harlander, Uwe and Borcia, Ion-Dan and Vincze, Miklos and Rodda, Costanza}, title = {Probability Distribution of Extreme Events in a Baroclinic Wave Laboratory Experiment}, series = {Fluids}, volume = {7}, journal = {Fluids}, number = {8}, issn = {2311-5521}, doi = {10.3390/fluids7080274}, abstract = {Atmospheric westerly jet streams are driven by temperature differences between low and high latitudes and the rotation of the Earth. Meandering jet streams and propagating Rossby waves are responsible for the variable weather in the mid-latitudes. Moreover, extreme weather events such as heat waves and cold spells are part of the jet stream dynamics. For many years, a simple analog in the form of a simplified laboratory experiment, the differentially heated rotating annulus, has provided insight into the dynamics of the meandering jet stream. In the present study, probability density distributions of extreme events from a long-term laboratory experiment are studied and compared to the atmospheric probability density distributions. Empirical distributions of extreme value monthly block data are derived for the experimental and atmospheric cases. Generalized extreme value distributions are adjusted to the empirical distributions, and the distribution parameters are compared. Good agreement was found, but the distributions of the experimental data showed a shift toward larger extreme values, and some explanations for this shift are suggested. The results indicate that the laboratory model might be a useful tool for investigating changes in extreme event distributions due to climate change. In the laboratory context, the change can be modeled by an increase in total temperature accompanied by a reduction in the radial heat contrast.}, language = {en} } @misc{RoddaHarlanderVincze, author = {Rodda, Costanza and Harlander, Uwe and Vincze, Miklos}, title = {Jet stream variability in a polar warming scenario - a laboratory perspective}, series = {Weather and Climate Dynamics}, volume = {3}, journal = {Weather and Climate Dynamics}, number = {3}, issn = {2698-4016}, doi = {10.5194/wcd-3-937-2022}, pages = {937 -- 950}, language = {en} } @incollection{SliavinSzaboFruehetal., author = {Sliavin, Yaraslau and Szabo, Peter and Fr{\"u}h, Wolf-Gerrit and Schulze, Bj{\"o}rn and Egbers, Christoph}, title = {Utilizing infrared thermography to investigate baroclinic instability in the differentially heated rotating annulus}, series = {GALA-Fachtagung "Experimentelle Str{\"o}mungsmechanik", 6.- 8. September 2022, Ilmenau}, booktitle = {GALA-Fachtagung "Experimentelle Str{\"o}mungsmechanik", 6.- 8. September 2022, Ilmenau}, doi = {10.13140/RG.2.2.32413.59360}, pages = {49.1 -- 49.8}, language = {en} } @incollection{StrangfeldBoeluekSzaboetal., author = {Strangfeld, Matthias and B{\"o}l{\"u}k, Oguzhan and Szabo, Peter and Meier, Martin and Meyer, Antoine and Sliavin, Yaraslau and Motuz, Vasyl and Egbers, Christoph}, title = {Thermo-electrohydrodynamic convection in a dielectric fluid layer with volumetric heating}, series = {GALA-Fachtagung "Experimentelle Str{\"o}mungsmechanik", 6.- 8. September 2022, Ilmenau}, booktitle = {GALA-Fachtagung "Experimentelle Str{\"o}mungsmechanik", 6.- 8. September 2022, Ilmenau}, pages = {43.1 -- 43.8}, language = {en} } @misc{SzaboGaillardHaunetal., author = {Szabo, Peter and Gaillard, Yann and Haun, P. and Carter, R. and Adrian, A. and Sliavin, Yaraslau and Zaussinger, Florian and Egbers, Christoph}, title = {AtmoFlow - Investigating large scale convection in planetary atmospheres}, series = {27th European Low Gravity Research Association Biennial Symposium and General}, journal = {27th European Low Gravity Research Association Biennial Symposium and General}, pages = {92 -- 93}, language = {en} } @misc{MeierMeyerMotuzetal., author = {Meier, M. and Meyer, Antoine and Motuz, Vasyl and Sliavin, Yaraslau and Bista, T. R. and Strangfeld, Matthias and Szabo, Peter and Egbers, Christoph}, title = {Dielectrophoretic induced convection in a sounding rocket flight}, series = {Tagung: 27th European Low Gravity Research Association Biennial Symposium and General}, journal = {Tagung: 27th European Low Gravity Research Association Biennial Symposium and General}, pages = {37}, language = {en} } @misc{MeyerMeierSzaboetal., author = {Meyer, Antoine and Meier, Martin and Szabo, Peter and Sliavin, Yaraslau and Egbers, Christoph and Gerstner, Philipp and Motuz, Vasyl and Roller, Jonas and Heuveline, Vincent}, title = {Stability of a dielectric liquid confined in a differentially heated vertical Taylor-Couette system with applied radial electric field}, series = {International Symposium on Bifurcations and Instabilities in Fluid Dynamics}, journal = {International Symposium on Bifurcations and Instabilities in Fluid Dynamics}, pages = {23}, language = {en} } @misc{SzaboGaillardEgbers, author = {Szabo, Peter and Gaillard, Yann and Egbers, Christoph}, title = {Thermo-electrohydrodynamic (TEHD) convection in rotating spherical gap: A 2D-numerical simulation of the AtmoFlow sphere}, series = {European Fluid Mechanics Conference EFMC14}, journal = {European Fluid Mechanics Conference EFMC14}, pages = {37}, language = {en} } @misc{SzaboFrueh, author = {Szabo, Peter and Fr{\"u}h, Wolf-Gerrit}, title = {Effect of intrinsic thermomagnetic convective timescales on the response to periodic modulation of external forcing parameters}, series = {European Fluid Mechanics Conference EFMC14}, journal = {European Fluid Mechanics Conference EFMC14}, pages = {35}, language = {en} } @misc{MeyerMeierSzaboetal., author = {Meyer, Antoine and Meier, M. and Szabo, Peter and Sliavin, Yaraslau and Motuz, Vasyl and Gerstner, Philipp and Roller, Jonas and Heuveline, Vincent and Egbers, Christoph}, title = {Thermoelectric instability of a dielectric fluid in a cylindrical annulus with vertical or horizontal orientation}, series = {European Fluid Mechanics Conference EFMC14}, journal = {European Fluid Mechanics Conference EFMC14}, pages = {37}, language = {en} } @misc{HasanuzzamanEivaziMerboldetal., author = {Hasanuzzaman, Gazi and Eivazi, Hamidreza and Merbold, Sebastian and Egbers, Christoph and Vinuesa, Ricardo}, title = {Enhancement of PIV measurements via physics-informed neural networks}, series = {Measurement Science and Technology}, journal = {Measurement Science and Technology}, issn = {1361-6501}, doi = {10.1088/1361-6501/aca9eb}, language = {en} } @misc{MeyerYoshikawaSzaboetal., author = {Meyer, Antoine and Yoshikawa, Harunori and Szabo, Peter and Meier, Martin and Egbers, Christoph and Mutabazi, Innocent}, title = {Thermoelectric instabilities in a circular Couette flow}, series = {Philosophical transactions of the Royal Society. Series A, Mathematical, physical and engineering sciences}, volume = {381}, journal = {Philosophical transactions of the Royal Society. Series A, Mathematical, physical and engineering sciences}, number = {2243}, issn = {1471-2962}, doi = {10.1098/rsta.2022.0139}, language = {en} } @misc{MeyerMeierMotuzetal., author = {Meyer, Antoine and Meier, Martin and Motuz, Vasyl and Egbers, Christoph}, title = {Thermo-electric convection in a cylindrical annulus during a sounding rocket flight}, series = {Journal of Fluid Mechanics}, volume = {972}, journal = {Journal of Fluid Mechanics}, number = {A26}, issn = {0022-1120}, doi = {10.1017/jfm.2023.677}, language = {en} } @misc{PanahandehMayGrosseKockertetal., author = {Panahandeh, Sara and May, Daniel and Grosse-Kockert, Corina and Schacht, Ralph and Abo Ras, Mohamad and Wunderle, Bernhard}, title = {Pulsed infrared thermal imaging as inline quality assessment tool}, series = {Microelectronics Reliability}, volume = {2023}, journal = {Microelectronics Reliability}, number = {Volume 142}, issn = {0026-2714}, doi = {10.1016/j.microrel.2023.114910}, pages = {1 -- 11}, abstract = {Pulsed infrared thermography (PIRT) is a very fast and non-destructive technique for testing various types of specimens. This makes PIRT interesting for 100 \%-inspections in industrial production lines. Especially for the die attach interface inspection of sintered and soldered electronic components and layer-to-layer interfaces in fiber-reinforced plastic (FRP), the industry is looking for alternatives to cost intensive X-ray methods and the time-consuming scanning acoustic microscopy (C-SAM). A big challenge to use the PIRT technology for inspections in industrial production lines is the low emissivity of the surface of the device under test (DUT). This work will present a PIRT system including a vacuum foil lamination setup to avoid the necessary spray coating of DUTs with low emissivity surfaces in failure analyses. This system can be used as inline quality assessment tool with an integrated technique to perform reliable component inspections on a wide range of different specimens.}, language = {en} } @misc{BourasFellahBarilleetal., author = {Bouras, Dikra and Fellah, Mamoun and Barille, Regis and Obrosov, Aleksei and El-Hiti, Gamal A.}, title = {Production of novel Zr-Mg nanoceramics based on kaolinite clay with strong antibacterial activity}, series = {Ceramics International}, volume = {50}, journal = {Ceramics International}, number = {16}, publisher = {Elsevier}, issn = {1873-3956}, doi = {https://doi.org/10.1016/j.ceramint.2024.05.091}, pages = {27949 -- 27960}, abstract = {Gram-negative bacteria Pseudomonas putida, Gram-positive Bacillus subtilis, and Staphylococcus aureus were utilized as test samples to evaluate the antibacterial characteristics of DD3-clay/MgO and DD3+38 wt\% ZrO2-clay/MgO nanoparticles. The ceramic powders prepared by a thermal autoclave method are characterized before and after Mg addition by SEM, EDX, XRD, IR, UV-visible, and TEM in order to investigate microstructure, phase, and surface morphology. The results showed that after adding Mg, it led to the deformation of the crystal lattices of (mullite, zirconium silicate, and zirconium oxide) together with a decrease in particle size (75-103 nm) and a complete change in its shape from nanotube to nanospherical, as observed by SEM and TEM analyses. It also confirmed by UV-visible spectroscopy that the addition of Mg increases the absorbance accompanying a decrease in the energy gap of 1.91, 1.74, 1.73, and 1.43 eV corresponding to DD3, DD3Z, DD3/30 wt\% Mg and DD3Z/30 wt\% Mg respectively. The antibacterial mechanism is related to the size of the particles, the solvent used for powder dissolution, the nanoparticle's size when they come into touch with bacteria, and the generation of reactive oxygen species (ROS: ˙O2-, ˙OH, and H2O2). It was observed that the anti-bacterial activity is enhanced with 10 wt\% and 30 wt\% of Mg added to a modified ceramic powder. Also, more O2- is formed on the surface of the prepared powder, which penetrates the bacterial cell and destroys it. The nanocomposite particles showed remarkable antibacterial activity when they were dissolved in DMSO compared to methanol and chloroform as organic solvents. The aim is to enrich knowledge on the antibacterial activities of metal nanoparticles (ZrSiO4 and MgO) on three bacterial strains with different Grams due to their extensive involvement in the phenomena of contamination and infection encountered in the medical field. The synthesized nanoparticles have good antimicrobial activity against all strains tested. A maximum inhibition zone of 35 ± 0.2 mm was obtained with S. aureus, a zone of 23 ± 0.46 mm with P. putida and a zone of 27 ± 0.46 nm with B. subtilis for DD3/30 wt\% Mg and an inhibition zone of 38 ± 0.93 mm, 26 ± 0.24 nm and 17 ± 0.33 nm was obtained with same strains for DD3Z/30 wt\% Mg, respectively.}, language = {en} } @misc{GaillardSzaboTravnikovetal., author = {Gaillard, Yann and Szabo, Peter and Travnikov, Vadim and Egbers, Christoph}, title = {Modelling Thermo-Electrohydrodynamic Convection in Rotating Spherical Shell Using OpenFOAM ®}, series = {OpenFOAM® Journal}, volume = {5 (2025)}, journal = {OpenFOAM® Journal}, doi = {10.51560/ofj.v5.136}, pages = {1 -- 16}, language = {en} } @misc{HamedeRollerMeyeretal., author = {Hamede, Mohammed Hussein and Roller, Jonas and Meyer, Antoine and Heauveline, Vincent and Egbers, Christoph}, title = {Dielectrophoretic force-enhanced thermal convection within a horizontal cylindrical annulus}, series = {Physics of Fluids}, volume = {36}, journal = {Physics of Fluids}, number = {12}, publisher = {AIP Publishing}, doi = {10.1063/5.0234772}, pages = {1 -- 14}, language = {en} } @misc{HasanuzzamanEgbers, author = {Hasanuzzaman, Gazi and Egbers, Christoph}, title = {Flow control of a turbulent boundary layer using uniform blowing}, series = {Progress in Turbulence X : Proceedings of the iTi Conference on Turbulence 2023}, journal = {Progress in Turbulence X : Proceedings of the iTi Conference on Turbulence 2023}, isbn = {978-3-031-55924-2}, doi = {10.1007/978-3-031-55924-2_36}, language = {en} } @misc{BorciaRichterBorciaetal., author = {Borcia, Ion-Dan and Richter, Sebastian and Borcia, Rodica and Sch{\"o}n, Franz-Theo and Harlander, Uwe and Bestehorn, Michael}, title = {Wave propagation in a circular channel: sloshing and resonance}, series = {The European Physical Journal Special Topics}, volume = {Vol. 232}, journal = {The European Physical Journal Special Topics}, number = {4}, issn = {1951-6401}, doi = {10.1140/epjs/s11734-023-00790-z}, pages = {461 -- 468}, abstract = {Surface wave resonance of a liquid (water) layer confined in a circular channel is studied both experimentally and numerically. For the experiment, eight unevenly distributed ultrasonic distance sensors measure the local height of the wave surface. The resonance curves show maxima only for odd multiples of the fundamental resonance frequency . We explained this behavior using a simple intuitive "ping-pong" like model. Collision of wave fronts can be observed for higher frequencies. Also, the wave reflection on the walls can be treated as wave collision with itself. The non-linearity seems to be weak in our study so the delay in the wave propagation before and after the collision is small. Time-space plots show localized propagating waves with high amplitudes for frequencies near resonance. Between the peaks low amplitude and harmonic patterns are observed. However, for higher frequencies, the frequency band for localized waves becomes wider. In the Fourier space-time plane, this can be observed as a point for the harmonic patterns or a superposition of two lines: one line parallel to wave-vector k axis corresponding to the excitation frequency and a second line with inclination given by wave propagation velocity . For planned future work, this result will help us to reconstruct the whole water surface elevation using time-series from only a few measurement points}, language = {en} } @misc{SchoenBestehorn, author = {Sch{\"o}n, Franz-Theo and Bestehorn, Michael}, title = {Instabilities and pattern formation in viscoelastic fluids}, series = {The European Physical Journal Special Topics}, volume = {Vol. 232}, journal = {The European Physical Journal Special Topics}, number = {4}, issn = {1951-6401}, doi = {10.1140/epjs/s11734-023-00792-x}, pages = {375 -- 383}, language = {en} } @incollection{MerboldHasanuzzamanBuchwaldetal., author = {Merbold, Sebastian and Hasanuzzaman, Gazi and Buchwald, Tom and Schunk, Christoph and Schmeling, Daniel and Volkmann, Andr{\´e} and Brinkema, Robert and Hampel, Uwe and Schr{\"o}der, Andreas and Egbers, Christoph}, title = {Reference experiment for aerosol particle transport for dynamic situations}, series = {Experimentelle Str{\"o}mungsmechanik : 29. Fachtagung, 6.-8. September 2022, Ilmenau}, booktitle = {Experimentelle Str{\"o}mungsmechanik : 29. Fachtagung, 6.-8. September 2022, Ilmenau}, editor = {Cierpka, Christian}, publisher = {Deutsche Gesellschaft f{\"u}r Laser-Anemometrie - German Association for Laser Anemometry GALA e.V.}, address = {Karlsruhe}, isbn = {978-3-9816764-8-8}, pages = {8}, language = {en} } @incollection{HamedeMerboldEgbers, author = {Hamede, Mohammed Hussein and Merbold, Sebastian and Egbers, Christoph}, title = {Formation of flow patterns in a counter-rotating very wide gap Taylor-Couette flow (η = 0.1)}, series = {Experimentelle Str{\"o}mungsmechanik : 29. Fachtagung, 6.-8. September 2022, Ilmenau}, booktitle = {Experimentelle Str{\"o}mungsmechanik : 29. Fachtagung, 6.-8. September 2022, Ilmenau}, publisher = {Deutsche Gesellschaft f{\"u}r Laser-Anemometrie - German Association for Laser Anemometry GALA e.V.}, address = {Karlsruhe}, isbn = {978-3-9816764-8-8}, pages = {8}, language = {en} } @incollection{MerboldKumarEgbers, author = {Merbold, Sebastian and Kumar, Chandana B.V. and Egbers, Christoph}, title = {Transparent water tunnel for educational purpose of fundamental flow phenomena and Laser-optical measurement techniques}, series = {Experimentelle Str{\"o}mungsmechanik : 29. Fachtagung, 6.-8. September 2022, Ilmenau}, booktitle = {Experimentelle Str{\"o}mungsmechanik : 29. Fachtagung, 6.-8. September 2022, Ilmenau}, publisher = {Deutsche Gesellschaft f{\"u}r Laser-Anemometrie - German Association for Laser Anemometry GALA e.V.}, address = {Karlsruhe}, isbn = {978-3-9816764-8-8}, pages = {8}, language = {en} } @phdthesis{Rodda, author = {Rodda, Costanza}, title = {Gravity wave emission from jet systems in the differentially heated rotating annulus experiment}, edition = {1. Auflage}, publisher = {Cuvillier Verlag}, address = {G{\"o}ttingen}, isbn = {978-3-7369-7110-3}, pages = {xvi, 180}, language = {en} } @misc{HamedeMerboldEgbers, author = {Hamede, Mohammed Hussein and Merbold, Sebastian and Egbers, Christoph}, title = {Transition to the ultimate turbulent regime in a very wide gap Taylor-Couette flow (η = 0.1) with a stationary outer cylinder}, series = {EPL (Europhysics Letters)}, volume = {143}, journal = {EPL (Europhysics Letters)}, number = {2}, issn = {1286-4854}, doi = {10.1209/0295-5075/acdea1}, language = {en} } @misc{RichterZanounPeixinhoetal., author = {Richter, Stefan and Zanoun, El-Sayed and Peixinho, Jorge and Egbers, Christoph}, title = {Pipe Flow Development and Transition in CoSmaPipe Facility}, series = {Proceedings in applied mathematics and mechanics : PAMM}, volume = {23}, journal = {Proceedings in applied mathematics and mechanics : PAMM}, number = {1}, issn = {1617-7061}, doi = {10.1002/pamm.202300001}, language = {en} } @misc{BarryYoshikawaKangetal., author = {Barry, Elhadj and Yoshikawa, Harunori and Kang, Changwoo and Meyer, Antoine and Meier, Martin and Crumeyrolle, Olivier and Egbers, Christoph and Mutabazi, Innocent}, title = {Thermoelectric convection in a planar capacitor: theoretical studies and experiments in parabolic flights}, series = {Comptes Rendus M{\´e}canique}, journal = {Comptes Rendus M{\´e}canique}, issn = {1873-7234}, pages = {1 -- 15}, language = {en} } @misc{GaillardSzaboTravnikovetal., author = {Gaillard, Yann and Szabo, Peter and Travnikov, Vadim and Egbers, Christoph}, title = {Thermo-electrohydrodynamic convection in a rotating shell with central force field}, series = {International Journal of Heat and Mass Transfer}, volume = {Vol. 2018}, journal = {International Journal of Heat and Mass Transfer}, issn = {0017-9310}, doi = {10.1016/j.ijheatmasstransfer.2023.124760}, pages = {1 -- 12}, language = {en} } @misc{ZanounDewidarEgbers, author = {Zanoun, El-Sayed and Dewidar, Yasser and Egbers, Christoph}, title = {Reynolds number dependence of azimuthal and streamwise pipe flow structures}, series = {Journal of Fluid Mechanics}, volume = {Vol. 973}, journal = {Journal of Fluid Mechanics}, issn = {0022-1120}, doi = {10.1017/jfm.2023.700}, pages = {1 -- 36}, language = {en} } @misc{SzaboGaillardZaussingeretal., author = {Szabo, Peter and Gaillard, Yann and Zaussinger, Florian and Egbers, Christoph}, title = {Thermo-electrohydrodynamic convection in a differentially heated shell with electric central force field}, series = {Proceedings in applied mathematics and mechanics : PAMM}, volume = {23}, journal = {Proceedings in applied mathematics and mechanics : PAMM}, number = {1}, issn = {1617-7061}, doi = {10.1002/pamm.202200121}, language = {en} } @misc{HamedeMerboldEgbers, author = {Hamede, Mohammed Hussein and Merbold, Sebastian and Egbers, Christoph}, title = {Experimental investigation of turbulent counter-rotating Taylor-Couette flows for radius ratio η = 0.1}, series = {Journal of Fluid Mechanics}, volume = {964}, journal = {Journal of Fluid Mechanics}, issn = {1469-7645}, doi = {10.1017/jfm.2023.392}, pages = {A36-1 -- A36-29}, language = {en} } @misc{LabarbeLeGalHarlanderetal., author = {Labarbe, Joris and Le Gal, Patrice and Harlander, Uwe and Le Diz{\`e}s, St{\´e}phane and Favier, Benjamin}, title = {Localized layers of turbulence in stratified horizontally sheared Poiseuille flow}, series = {Fluid Dynamics}, journal = {Fluid Dynamics}, pages = {20}, language = {en} } @misc{HarlanderSukhanovskiiAbideetal., author = {Harlander, Uwe and Sukhanovskii, Andrei and Abide, St{\´e}phane and Borcia, Ion-Dan and Popova, Elene and Rodda, Costanza and Vasiliev, Andrei and Vincze, Miklos}, title = {New Laboratory Experiments to Study the Large-Scale Circulation and Climate Dynamics}, series = {Atmosphere}, volume = {14}, journal = {Atmosphere}, number = {5}, doi = {10.3390/atmos14050836}, pages = {19}, abstract = {The large-scale flows of the oceans and the atmosphere are driven by a non-uniform surface heating over latitude, and rotation. For many years scientists try to understand these flows by doing laboratory experiments. In the present paper we discuss two rather new laboratory experiments designed to study certain aspects of the atmospheric circulation. One of the experiments, the differentially heated rotating annulus at the Brandenburg University of Technology (BTU) Cottbus, has a cooled inner cylinder and a heated outer wall. However, the structure of the atmospheric meridional circulation motivates a variation of this "classical" design. In the second experiment described, operational at the Institute of Continuous Media Mechanics (ICMM) in Perm, heating and cooling is performed at different vertical levels that resembles more the atmospheric situation. Recent results of both experiments are presented and discussed. Differences and consistencies are highlighted. Though many issues are still open we conclude that both setups have their merits. The variation with heating and cooling at different levels might be more suited to study processes in the transition zone between pure rotating convection and the zone of westerly winds. On the other hand, the simpler boundary conditions of the BTU experiment make this experiment easier to control.}, language = {en} } @misc{MalteseMelettideOliveiraAbideViazzoetal., author = {Maltese Meletti de Oliveira, Gabriel and Abide, St{\´e}phane and Viazzo, Stephane and Harlander, Uwe}, title = {A parameter study of strato-rotational low-frequency modulations: impacts on momentum transfer and energy distribution}, series = {Philosophical transactions of the Royal Society : Series A, Mathematical, physical and engineering sciences}, volume = {381}, journal = {Philosophical transactions of the Royal Society : Series A, Mathematical, physical and engineering sciences}, number = {2246}, issn = {1364-503X}, doi = {10.1098/rsta.2022.0297}, language = {en} } @misc{MerboldHamedeFroitzheimetal., author = {Merbold, Sebastian and Hamede, Mohammed Hussein and Froitzheim, Andreas and Egbers, Christoph}, title = {Flow regimes in a very wide-gap Taylo-Couette flow with counter rotating cylinders}, series = {Philosophical transactions of the Royal Society : Series A, Mathematical, physical and engineering sciences}, volume = {381}, journal = {Philosophical transactions of the Royal Society : Series A, Mathematical, physical and engineering sciences}, number = {2246}, issn = {1364-503X}, doi = {10.1098/rsta.2022.0113}, language = {en} } @misc{HamedeMerboldEgbers, author = {Hamede, Mohammed Hussein and Merbold, Sebastian and Egbers, Christoph}, title = {Experimental methods for investigating the formation of flow patterns in a very wide gap Taylor-Couette flow (\$\eta=0.1\$)}, series = {tm - Technisches Messen}, volume = {90}, journal = {tm - Technisches Messen}, number = {5}, issn = {2196-7113}, doi = {10.1515/teme-2022-0107}, pages = {332 -- 339}, language = {en} } @misc{MerboldHasanuzzamanBuchwaldetal., author = {Merbold, Sebastian and Hasanuzzaman, Gazi and Buchwald, Tom and Schunk, Christoph and Schmeling, Daniel and Volkmann, Andr{\´e} and Brinkema, Robert and Hampel, Uwe and Schr{\"o}der, Andreas and Egbers, Christoph}, title = {Reference experiment on aerosol particle transport for dynamic situations}, series = {tm - Technisches Messen}, volume = {90}, journal = {tm - Technisches Messen}, number = {5}, issn = {2196-7113}, doi = {10.1515/teme-2022-0118}, pages = {13}, language = {en} } @misc{GaillardSzaboEgbers, author = {Gaillard, Yann and Szabo, Peter and Egbers, Christoph}, title = {AtmoFlow: Thermo-electrohydrodynamic convection in the thermally driven spherical shell with differential rotation}, series = {EGU General Assembly 2023}, journal = {EGU General Assembly 2023}, doi = {10.5194/egusphere-egu23-1841}, language = {en} } @misc{BuchwaldHasanuzzamanMerboldetal., author = {Buchwald, Tom and Hasanuzzaman, Gazi and Merbold, Sebastian and Schanz, Daniel and Egbers, Christoph and Schr{\"o}der, Andreas}, title = {Large-scale flow field and aerosol particle transport investigations in a classroom using 2D-Shake-The-Box Lagrangian Particle Tracking}, series = {Heliyon}, volume = {9}, journal = {Heliyon}, number = {12}, issn = {2405-8440}, doi = {10.1016/j.heliyon.2023.e22826}, language = {en} } @misc{HasanuzzamanEgbers, author = {Hasanuzzaman, Gazi and Egbers, Christoph}, title = {Application of machine learning for sustainable aviation : the role of friction drag and flow control in turbulent boundary layer flows}, series = {The 2nd International Conference on Advancing Sustainable Futures (ICASF 2024)}, journal = {The 2nd International Conference on Advancing Sustainable Futures (ICASF 2024)}, doi = {10.13140/RG.2.2.31060.92807}, pages = {1 -- 8}, language = {en} } @phdthesis{Hamede, author = {Hamede, Mohammed Hussein Haytham}, title = {The turbulent very wide-gap Taylor-Couette flow : experimental investigation}, doi = {10.26127/BTUOpen-6445}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-64456}, language = {en} } @phdthesis{Shahirpour, author = {Shahirpour, Amir}, title = {A characteristic dynamic mode decomposition to detect transport-dominated large-scale coherent structures in turbulent wall-bounded flows}, doi = {10.26127/BTUOpen-6958}, pages = {xxxv, 157}, language = {en} }