TY - CHAP A1 - Zanoun, El-Sayed A1 - Jehring, Lothar A1 - Egbers, Christoph T1 - Development of miniature flow sensor for aerodynamic applications Y1 - 2004 ER - TY - CHAP A1 - Jehring, Lothar A1 - Zanoun, El-Sayed A1 - Egbers, Christoph T1 - Fortschritte bei der Entwicklung und Anwendung eines miniaturisierten Sensors für wandnahe Strömungen Y1 - 2005 ER - TY - CHAP A1 - Zanoun, El-Sayed A1 - Durst, F. A1 - Egbers, Christoph T1 - Flow Developments in Smooth Wall Circular Duct Facility Y1 - 2006 ER - TY - CHAP A1 - Zanoun, El-Sayed A1 - Durst, F. A1 - Egbers, Christoph T1 - Mean Flow Properties in Smooth Pipe Flow Experiment Y1 - 2006 ER - TY - CHAP A1 - Zanoun, El-Sayed A1 - Durst, F. A1 - Egbers, Christoph T1 - High Reynolds Number Fully Developed Turbulent Pipe Flows Y1 - 2005 ER - TY - CHAP A1 - Jehring, Lothar A1 - Zanoun, El-Sayed A1 - Kito, Mizuki T1 - Vermessung wandnaher Strömungen unter Verwendung eines neuartigen miniaturisierten Sensor-Moduls Y1 - 2005 ER - TY - JOUR A1 - Zanoun, El-Sayed A1 - Durst, F. A1 - Nagib, H. M. T1 - Response to "Comment on 'Evaluating the law of the wall in two-dimensional fully developed turbulent channel flows' " Y1 - 2004 ER - TY - CHAP A1 - Jehring, Lothar A1 - Zanoun, El-Sayed T1 - Reducing environmental impact by mean of active flow control Y1 - 2005 ER - TY - CHAP A1 - Zanoun, El-Sayed A1 - Durst, F. A1 - Nagib, H. M. T1 - Assessment of Scaling Laws in Fully Developed Turbulent Pipe and Channel Flows Y1 - 2005 ER - TY - CHAP A1 - Zanoun, El-Sayed A1 - Durst, F. A1 - Nagib, H. M. T1 - Scaling Laws for Turbulent Channel and Pipe Flows over a Wide Range of Reynolds Number Y1 - 2005 ER - TY - CHAP A1 - Zanoun, El-Sayed A1 - Egbers, Christoph A1 - Jehring, Lothar T1 - Modified Optical and Thermal Anemometers for Laminar and Turbulent Boundary Layers Investigation Y1 - 2005 ER - TY - CHAP A1 - Zanoun, El-Sayed A1 - Egbers, Christoph A1 - Jehring, Lothar T1 - New Approach for Wall Shear Stress Measurements Y1 - 2004 ER - TY - CHAP A1 - Kito, Mizuki A1 - Zanoun, El-Sayed A1 - Jehring, Lothar A1 - Egbers, Christoph T1 - Laser-Doppler Anemometry in Turbulent Boundary Layers Induced by Different Tripping Devices Compared with Recent Theories Y1 - 2006 ER - TY - CHAP A1 - Zanoun, El-Sayed A1 - Durst, F. A1 - Jehring, Lothar A1 - Egbers, Christoph T1 - The Darcy Friction Factor and the von Kármán Constant in Pipe Flow Experiment Y1 - 2006 ER - TY - GEN A1 - Zanoun, El-Sayed A1 - Durst, F. A1 - Saleh, O. A1 - Al-Salaymeh, Ahmed T1 - Wall skin friction and mean velocity profiles of fully developed turbulent pipe flows T2 - Experimental Thermal and Fluid Science Y1 - 2006 U6 - https://doi.org/10.1016/j.expthermflusci.2007.04.002 SN - 0894-1777 VL - 32 IS - 1 SP - 249 EP - 261 ER - TY - CHAP A1 - Deters, T. A1 - Guillerm, R. A1 - Egbers, Christoph A1 - Zanoun, El-Sayed T1 - Influence of thermal convection in Taylor-Couette flows Y1 - 2007 ER - TY - CHAP A1 - Jehring, Lothar A1 - Zanoun, El-Sayed A1 - Egbers, Christoph T1 - Untersuchung von ebenen Wandgrenzschichten mit verschiedenen optischen Messverfahren, Fachtagung Y1 - 2007 ER - TY - CHAP A1 - Jehring, Lothar A1 - Zanoun, El-Sayed A1 - Egbers, Christoph T1 - Near-wall flow measurements by means of miniaturized LDV flow sensor combined with hot-film anemometry Y1 - 2007 ER - TY - CHAP A1 - Zanoun, El-Sayed A1 - Egbers, Christoph A1 - Guo, Xiaoai A1 - Riebel, Ulrich T1 - Experimental and Numerical Investigations of Isothermal Fluid-Particle Flows in Vertical Cuvette Y1 - 2007 ER - TY - GEN A1 - Zanoun, El-Sayed A1 - Kito, Mizuki A1 - Egbers, Christoph T1 - A Study on Flow Transition and Development in Circular and Rectangular Ducts Y1 - 2009 ER - TY - JOUR A1 - Deters, T. A1 - Egbers, Christoph A1 - Zanoun, El-Sayed A1 - Guillerm, R. T1 - Influence of thermal convection in Taylor-Couette flows Y1 - 2008 ER - TY - GEN A1 - Zanoun, El-Sayed A1 - Durst, F. T1 - Momentum transport and turbulent kinetic energy production in plane-channel flow Y1 - 2009 ER - TY - GEN A1 - Zanoun, El-Sayed A1 - Durst, F. T1 - The physics of heat transfer from hot-wires in the proximity of walls of different materials Y1 - 2009 ER - TY - GEN A1 - Zanoun, El-Sayed A1 - Durst, F. A1 - Nagib, H. M. T1 - Refined Cf relation for turbulent channels and consequences for high Re experiments Y1 - 2009 ER - TY - CHAP A1 - Motuz, Vasyl A1 - Kornilov, Vladimir A1 - Jehring, Lothar A1 - Zanoun, El-Sayed A1 - Egbers, Christoph T1 - Control of turbulent boundary layer using microblowing through a perforated surface T2 - 15. International Conference on the Methods of Aerophysical Research, Nov. 1-6, 2010, Novosibirsk, Russia, part 1 Y1 - 2010 SP - 188 EP - 189 CY - Novosibirsk ER - TY - GEN A1 - König, Franziska A1 - Zanoun, El-Sayed A1 - Jehring, Lothar A1 - Egbers, Christoph T1 - On the behavior of the inner peak in turbulent pipe flow Y1 - 2013 UR - http://etc14.ens-lyon.fr/openconf/modules/request.php?module=oc_proceedings&action=view.php&a=Poster&id=574 N1 - 14th European Turbulence Conference, 1– 4 September 2013, Lyon, France ER - TY - GEN A1 - König, Franziska A1 - Zanoun, El-Sayed A1 - Öngüner, Emir A1 - Egbers, Christoph T1 - The CoLaPipe - The new Cottbus large pipe test facility at Brandenburg University of Technology Cottbus-Senftenberg T2 - Review of scientific instruments Y1 - 2014 U6 - https://doi.org/10.1063/1.4884717 SN - 1089-7623 VL - 85 IS - 7 SP - 075115-1 EP - 075115-9 ER - TY - CHAP A1 - Öngüner, Emir A1 - Zanoun, El-Sayed A1 - Egbers, Christoph T1 - Turbulent Pipe Flow Structure Analysis in CoLa-Pipe T2 - Book of abstracts, 85th Annual Meeting of the International Association of Applied Mathematics and Mechanics, March 10 - 14, 2014, Erlangen Y1 - 2014 SP - S. 493 PB - Gesellschaft für Angewandte Mathematik und Mechanik ER - TY - CHAP A1 - Zanoun, El-Sayed A1 - König, Franziska A1 - Al-Mutairi, Fahad M. A1 - Egbers, Christoph A1 - Öngüner, Emir T1 - On the Application of Hot Wires and Pitot Tubes in Pipe and Channel Flows T2 - HEFAT 2014, 10th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, 6 – 9 July 2014 Orlando, Florida Y1 - 2014 U6 - https://doi.org/10.13140/2.1.3766.7521 ER - TY - CHAP A1 - Öngüner, Emir A1 - König, Franziska A1 - Zanoun, El-Sayed A1 - Egbers, Christoph T1 - Experimentelle Untersuchung der turbulenten Rohrstrukturen bei hohen Reynolds Zahlen T2 - GALA - Fachtagung Lasermethoden in der Strömungsmesstechnik, 22. Fachtagung, 9. - 11. September 2014, Karlsruhe Y1 - 2014 SN - 978-3-9816764-0-2 SP - S. 24 PB - GALA CY - Karlsruhe ER - TY - GEN A1 - Zanoun, El-Sayed A1 - Jehring, Lothar A1 - Egbers, Christoph T1 - Three measuring techniques for assessing the mean wall skin friction in wall-bounded flows T2 - Thermophysics and Aeromechanics Y1 - 2014 SN - 1531-8699 SN - 0869-8643 VL - 21 IS - 2 SP - 179 EP - 190 ER - TY - CHAP A1 - Öngüner, Emir A1 - Zanoun, El-Sayed A1 - König, Franziska A1 - Egbers, Christoph T1 - Structure Investigation in Pipe Flow at High Reynolds Numbers Y1 - 2016 SN - 978-3-319-29130-7 SP - 217 EP - 220 PB - Springer CY - Berlin ER - TY - GEN A1 - Zanoun, El-Sayed A1 - Öngüner, Emir A1 - Egbers, Christoph T1 - Conventional measuring probes in the wall layer of turbulent subsonic ducted flows T2 - Thermophysics and Aeromechanics Y1 - 2016 SN - 1531-8699 SN - 0869-8643 VL - 23 IS - 3 SP - 329 EP - 342 ER - TY - CHAP A1 - Öngüner, Emir A1 - Dittmar, Mirko A1 - Meyer, P. A1 - Zanoun, El-Sayed A1 - Egbers, Christoph T1 - Wall-bounded turbulent Structures in pipe flow based on streamwise and cross-sectional PIV at Re=10^4-10^5 T2 - 11th European Fluid Mechanics Conference, Sept. 12-16, 2016, Sevilla, Spain Y1 - 2016 UR - http://www.efmc11.org/download/com/com_0703_KFARSY.pdf ER - TY - CHAP A1 - Zanoun, El-Sayed A1 - Egbers, Christoph A1 - Öngüner, Emir T1 - Integral Flow parapeters for evaluating the law of the wall in pipe and channel facilities T2 - 11th European Fluid Mechanics Conference, Sept. 12-16, 2016, Sevilla, Spain Y1 - 2016 UR - https://www-docs.b-tu.de/fg-aerodynamik-stroemungslehre/public/PDF/Pubs/efmc11/com_0003_VPZ7VS.pdf ER - TY - CHAP A1 - Sevlam, Kamal A1 - Öngüner, Emir A1 - Peixinho, Jorge A1 - Zanoun, El-Sayed A1 - Egbers, Christoph T1 - Wall pressure fluctuations in developing turbulent pipe flow T2 - Book of abstracts, School ISTROF 2016, Instabilities and Turbulence in Strato-Rotational Flows, July 11-13th, 2016, Le Havre Y1 - 2016 UR - https://docs.google.com/viewer?a=v&pid=sites&srcid=ZGVmYXVsdGRvbWFpbnxzY2hvb2xpc3Ryb2Z8Z3g6NDA3Y2E3ZGQ2OWIwMTdmNQ ER - TY - CHAP A1 - Öngüner, Emir A1 - Zanoun, El-Sayed A1 - Egbers, Christoph ED - Örlü, Ramis ED - Talamelli, Alessandro ED - Peinke, Joachim ED - Oberlack, Martin T1 - Streamwise Auto-Correlation Analysis in Turbulent Pipe Flow Using Particle Image Velocimetry at High Reynolds Numbers T2 - Progress in Turbulence VII, Proceedings of the iTi Conference in Turbulence 2016 Y1 - 2017 UR - https://link.springer.com/chapter/10.1007/978-3-319-57934-4_16 SN - 978-3-319-57933-7 SP - 107 EP - 112 PB - Springer CY - Cham ER - TY - CHAP A1 - Öngüner, Emir A1 - Zanoun, El-Sayed A1 - Fiorini, Tommaso A1 - Bellani, Gabriele A1 - Shahirpour, Amir A1 - Egbers, Christoph A1 - Talamelli, Alessandro ED - Örlü, Ramis ED - Talamelli, Alessandro ED - Peinke, Joachim ED - Oberlack, Martin T1 - Wavenumber Dependence of Very Large-Scale Motions in CICLoPE at 4800 ≤ Reτ ≤ 37.000 T2 - Progress in Turbulence VII, Proceedings of the iTi Conference in Turbulence 2016 Y1 - 2017 UR - https://link.springer.com/chapter/10.1007/978-3-319-57934-4_15 SN - 978-3-319-57933-7 SP - 101 EP - 106 PB - Springer CY - Cham ER - TY - CHAP A1 - Egbers, Christoph A1 - Shahirpour, Amir A1 - Öngüner, Emir A1 - Zanoun, El-Sayed T1 - Spectral Analysis of Large Scale Structures in Fully Developed Turbulent Pipe Flow T2 - 88th Annual Meeting of the International Association of Applied Mathematics and Mechanics GAMM, March 6-10, 2017, Weimar, Germany, Book of abstracts Y1 - 2017 UR - https://www.tu-ilmenau.de/fileadmin/media/analysis/trunk/170304_BoA_GAMM_2017.pdf SP - S. 46 ER - TY - CHAP A1 - Zanoun, El-Sayed A1 - Öngüner, Emir A1 - Motuz, Vasyl A1 - Egbers, Christoph A1 - Fiorini, Tommaso A1 - Örlü, Ramis A1 - Bellani, Gabriele A1 - Talamelli, Alessandro T1 - Direct and in-direct measurement of momentum structure in ColaPipe T2 - 16th European Turbulence Conference, 21-24 August, 2017, Stockholm, Sweden Y1 - 2017 UR - http://www.delegia.com/app/data/8684/Abstract/29099/ETC16_Zanoun.pdf ER - TY - GEN A1 - Zanoun, El-Sayed A1 - Öngüner, Emir A1 - Shahirpour, Amir A1 - Merbold, Sebastian A1 - Egbers, Christoph T1 - Spectral Analysis of Large Scale Structures in Fully Developed Turbulent Pipe Flow T2 - Proceedings in applied mathematics and mechanics : PAMM Y1 - 2018 U6 - https://doi.org/10.1002/pamm.201710293 SN - 1617-7061 N1 - Special Issue: 88th Annual Meeting of the International Association of Applied Mathematics and Mechanics (GAMM), Weimar 2017; Editors: C. Könke, Weimar, and C. Trunk, Ilmenau VL - 17 IS - 1 SP - 647 EP - 650 ER - TY - GEN A1 - Selvam, Kamal A1 - Öngüner, Emir A1 - Peixinho, Jorge A1 - Zanoun, El-Sayed A1 - Egbers, Christoph T1 - Wall pressure in developing turbulent pipe flows T2 - Journal of Fluids Engineering Y1 - 2018 SN - 1528-901X SN - 0098-2202 VL - 140 IS - 8 ER - TY - CHAP A1 - Zanoun, El-Sayed A1 - Öngüner, Emir A1 - Egbers, Christoph A1 - Bellani, Gabriele A1 - Talamelli, Alessandro T1 - One-Dimensional Flow Spectra and Cumulative Energy from Two Pipe Facilities T2 - iTi 2018 Conference on Turbulence VIII, September 5–7, 2018, Bertinoro, Italy, Book of abstract Y1 - 2018 UR - https://www.fdy.tu-darmstadt.de/iti/author_information/submit_abstract_1/abstract_submission_1.en.jsp SP - S. 100 ER - TY - CHAP A1 - Zanoun, El-Sayed A1 - Motuz, Vasyl A1 - Egbers, Christoph A1 - Keller, J. A1 - Dörner, K. ED - Kähler, Christian J. ED - Hain, Rainer ED - Scharnowski, Sven ED - Fuchs, Thomas T1 - Stereoscopic-PIV and Hot Wire Measurements in Pipe Flow at Relatively High T2 - Proceedings of the 5th International Conference on Experimental Fluid Mechanics, Munich 2018 Y1 - 2018 SN - 978-3-943207-32-3 U6 - https://doi.org/10.18726/2018_2 SP - 877 EP - 882 PB - Institute of Fluid Mechanics and Aerodynamics, Universität der Bundeswehr CY - Neubiberg ER - TY - GEN A1 - Zanoun, El-Sayed A1 - Egbers, Christoph A1 - Örli, Ramis A1 - Fiorini, Tommaso A1 - Bellani, Gabriele A1 - Talamelli, Alessandro T1 - Experimental evaluation of the mean momentum and kinetic energy balance equations in turbulent pipe flows at high Reynolds number T2 - Journal of Turbulence Y1 - 2019 U6 - https://doi.org/10.1080/14685248.2019.1628968 SN - 1468-5248 VL - 20 IS - 5 SP - 285 EP - 299 ER - TY - GEN A1 - Zanoun, El-Sayed A1 - Egbers, Christoph A1 - Dewidar, Yasser T1 - Two-Point Velocity Correlations in Fully Developed Turbulent Pipe Flow at Shear Reynolds Number of Reτ ≈ 4000 T2 - Proceedings in Applied Mathematics and Mechanics : (PAMM) Y1 - 2021 U6 - https://doi.org/10.1002/pamm.202000330 SN - 1617-7061 VL - 20 IS - 1 ER - TY - GEN A1 - Richter, Stefan A1 - Zanoun, El-Sayed A1 - Egbers, Christoph T1 - Investigation of Large Scale Motion Interaction with the Near‐Wall Turbulence T2 - Proceedings in applied mathematics and mechanics : PAMM Y1 - 2021 U6 - https://doi.org/10.1002/pamm.202000331 SN - 1617-7061 VL - 20 IS - 1 ER - TY - GEN A1 - Zanoun, El-Sayed A1 - Egbers, Christoph A1 - Nagib, H. M. A1 - Durst, F. A1 - Bellani, Gabriele A1 - Talamelli, Alessandro T1 - Wall friction relations in wall-bounded shear flows T2 - European Journal of Mechanics - B/Fluids Y1 - 2021 U6 - https://doi.org/10.1016/j.euromechflu.2021.03.007 SN - 1873-7390 SN - 0997-7546 VL - Vol. 89 SP - 171 EP - 179 ER - TY - GEN A1 - Richter, Stefan A1 - Zanoun, El-Sayed A1 - Peixinho, Jorge A1 - Egbers, Christoph T1 - Pipe Flow Development and Transition in CoSmaPipe Facility T2 - Proceedings in applied mathematics and mechanics : PAMM Y1 - 2023 U6 - https://doi.org/10.1002/pamm.202300001 SN - 1617-7061 N1 - 92nd Annual Meeting of the International Association of Applied Mathematics and Mechanics (GAMM) May 2023 VL - 23 IS - 1 ER - TY - GEN A1 - Zanoun, El-Sayed A1 - Dewidar, Yasser A1 - Egbers, Christoph T1 - Reynolds number dependence of azimuthal and streamwise pipe flow structures T2 - Journal of Fluid Mechanics Y1 - 2023 U6 - https://doi.org/10.1017/jfm.2023.700 SN - 0022-1120 VL - Vol. 973 SP - 1 EP - 36 ER - TY - GEN A1 - EL-Sheikh, Mohamed A1 - EL-Batsh, Hesham M. A1 - Zanoun, El-Sayed A1 - Attia, Ali M. A. T1 - Numerical and experimental investigations of flow separation control through a linear compressor cascade T2 - Discover applied sciences N2 - Modern large-scale gas turbines are equipped with high-pressure ratio compressors to increase engine work and its overall efficiency. Flow separation and energy losses are also two interrelated phenomenon associated with changes in compressor loading level and performance. This paper examines therefore the control of flow separation using a passive-control technique. An arced divergent-convergent slot grooved from the blade pressure side to its suction side was adopted to control flow separation, reducing the losses through a linear compressor cascade. The spanwise location of the slot was selected based on CFD simulations where the corner separation was predicted. The slot height in the spanwise direction was selected to be 8% of the blade height at the end-wall side. The present work was performed experimentally and numerically at an inlet Reynolds number, Rec=ρV∞C/μ=2.98×105, covering a wide range of incidence angles from +6∘to-6∘. The experimental work was carried out using a linear cascade test section consisting of six NACA 65-009 blade profiles integrated into a low-speed wind tunnel. A five-hole pressure probe system was used to obtain main flow parameters. Numerically, four turbulence models, including Spalart–Allmaras (S–A) model, Realizable (R k-ε) model, Shear-Stress Transport (SST k-ω) model, and Reynolds Stress model (RSM) were tested to predict the velocity and pressure fields. Good agreement between the experimental measurements and the numerical results, which were obtained using the RSM turbulence model in terms of velocity profiles and total pressure downstream of blades. It was observed also that the use of the arced-slotted blades for positive incident angles was more effective in reducing the separation than the negative and zero incident angles, approaching a maximum value of 33% for 6° with enhanced blade loading reaching 17.6%. It is to be concluded that, the use of arced slotted blade improves the compressor performance specially for positive incident angles. KW - Linear compressor cascade KW - Flow separation KW - Passive flow control KW - Turbulence model KW - Slotted blade Y1 - 2024 U6 - https://doi.org/10.1007/s42452-024-05982-3 SN - 3004-9261 VL - 6 IS - 9 SP - 1 EP - 24 PB - Springer International Publishing CY - Cham ER -