@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{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} } @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} } @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{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{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{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{BarzantnyHamedeMajchrzyketal., author = {Barzantny, Marcel and Hamede, Mohammed Hussein and Majchrzyk, Michał and Merbold, Sebastian and Egbers, Christoph and Kostowski, Wojciech}, title = {Experimental investigation of the flow characteristics driving the Ranque-Hilsch phenomenon}, series = {International journal of heat and mass transfer}, volume = {253}, journal = {International journal of heat and mass transfer}, publisher = {Elsevier BV}, address = {Amsterdam}, issn = {0017-9310}, doi = {10.1016/j.ijheatmasstransfer.2025.127543}, pages = {1 -- 14}, abstract = {The Ranque-Hilsch vortex tube (RHVT) is a device that separates a pressurized inlet stream into two decompressed streams of different temperature, flowing to the so-called hot and cold outlets. In this study, the flow structures within the vortex tube were examined qualitatively. The examination considered both compressible and incompressible fluids, using pressurized air and water as working fluids. A parametric study was conducted, in which the fluid inlet pressure and the vortex tube length were varied. Three tubes, with the same diameter but differing lengths (100, 180, and 240 mm) were utilized. The flow inside the tube was investigated using a flow visualization technique, which was employed in a variety of configurations and setups contingent on the specific fluid conditions under examination. The visualization process required the use of aerosol injection in the case of air, and kalliroscope particles in the case of water investigation. The research enabled the visualization of the flow structure within the vortex tube, thereby significantly advancing the comprehension of the underlying physical processes. The findings of the experimental research demonstrated the existence of phenomena of considerable scientific value. The internal vortex and its spatial and temporal structure observed in the RHVT were consistent with literature data. This was achieved despite the so-far established consensus that this type of research is challenging and not entirely reliable. In the course of water-based investigation, the cavitation phenomenon was observed in the vicinity of the internal vortex. This discovery is likely to be the first of its kind and may contribute significantly to the advancement of research on the Ranque-Hilsch phenomenon.}, language = {en} }