This file was created by the Typo3 extension sevenpack version 0.7.16 --- Timezone: CET Creation date: 2020-02-21 Creation time: 00-07-58 --- Number of references 23 proceedings Edwige2018 ASME 2018 5th Joint US-European Fluids Engineering Division Summer Meeting 2018 2 Development and Applications in Computational Fluid Dynamics; Industrial and Environmental Applications of Fluid Mechanics; Fluid Measurement and Instrumentation The research on the external aerodynamics of ground vehicles can nowadays be related to sustainable development strategies, confirmed by the worldwide CO2 regulation target. Automotive manufacturers estimate that a drag reduction of 30% contributes to 10g/km of CO2 reduction. However, this drag reduction should be obtained without constraints on the design, the safety, comfort and habitability of the passengers. Thus, it is interesting to find flow control solutions, which will remove or remote recirculation zones due to separation edges with appropriate control techniques. In automotive sales, the SUV, 4x4 and compact cars represent a large part of the market share and the study of control approaches for this geometry is practically useful. In this work, appropriate control techniques are designed to decrease the drag forces around a reduced scale SUV car benchmark called POSUV. The control techniques are based on the DMD (Dynamic Mode Decomposition) algorithms generating an optimized drag reduction procedure. It involves independent transient inflow boundary conditions for flow control actuation in the vicinity of the separation zones and time resolved pressure sensor output signals on the rear end surface of the mockup. This study, that exploits dominant flow features behind the tailgate and the rear bumper, is performed using Large Eddy Simulations on a sufficient run time scale, in order to minimize a cost function dealing with the time and space average pressure coefficient. The resulting dynamic modal decomposition obtained by these LES simulations and by wind tunnel measurements has been compared for the reference case, in order to select the most appropriate run time scale. Analysis of the numerical results shows a significant pressure increase on the tailgate, for independent flow control frequencies. Similar decomposition performed in the wake with and without numerical flow control help understanding the flow modifications in the detachment zones. Montreal, Quebec, Canada, July 15–20, 2018 http://proceedings.asmedigitalcollection.asme.org/proceeding.aspx?articleid=2710650 ASME Proceedings | 25th Symposium on Industrial and Environmental Applications of Fluid Mechanics ASME 978-0-7918-5156-2 10.1115/FEDSM2018-83444 S.Edwige Ph.Gilotte I.Mortazavi Y.Eulalie D.Holst C. N.Nayeri J.-L.Aider E.Varon article Gray_2016 Proceedings of ASME Turbomachinery Technical Conference & Exposition. Seoul, South Korea, June 13–17, 2016 2016 Volume 4B: Combustion, Fuels and Emissions Paper No. GT2016-57813, pp. V04BT04A044 9 Constant-volume (pressure-gain) combustion cycles show much promise for further increasing the efficiency of modern gas turbines, which in the last decades have begun to reach the boundaries of modern technology in terms of pressure and temperature, as well as the ever more stringent demands on reducing exhaust gas emissions. The thermodynamic model of the gas turbine consists of a compressor with a polytropic efficiency of 90%, a combustor modeled as either a pulse detonation combustor (PDC) or as an isobaric homogeneous reactor, and a turbine, the efficiency of which is calculated using suitable turbine operational maps. A simulation is conducted using the one-dimensional reacting Euler equations to obtain the unsteady PDC outlet parameters for use as turbine inlet conditions. The efficiencies for the Fickett–Jacobs and Joule cycles are then compared. The Fickett–Jacobs cycle shows promise at relatively low compressor pressure ratios, whereas the importance of the harvesting of exhaust gas kinetic energy for the cycle performance is highlighted. Proceedings of ASME Turbomachinery Technical Conference & Exposition. Seoul, South Korea, June 13 – 17, 2016 http://proceedings.asmedigitalcollection.asme.org/proceeding.aspx?articleid=2555111 978-0-7918-4976-7 10.1115/gt2016-57813 J.Gray J.Vinkeloe J. P.Moeck C. O.Paschereit P.Stathopoulos P.Berndt R.Klein article Fischer2015 DEWEK 2015 2015 The development of a medium scale research wind turbine is a part of the research project PAK 780 funded by the German Science Foundation (DFG). In this project six universities from all over Germany join forces and pursue fundamental research in the field of wind turbine aerodynamics, inflow turbulence as well as wake and flow control. The Modular Research Wind Turbine (MoReWiT) design and development is an integral part of this research program designed to assist the research tasks of all project partners. The PAK 780 project consists of HFI TU Berlin, RWTH Aachen, Univ. of Oldenburg, Univ. of Stuttgart and TU Darmstadt and it is one of the major DFG funded projects in wind energy. Book of abstracts 2015 http://15.dewek.de/fileadmin/downloads/Book_of_Abstracts_2015.pdf DEWI J.Fischer O.Eisele G.Pichlivanoglou S.Vey C. N.Nayeri C. O.Paschereit conference Stathopoulos2015 2015 11 Toranomon Hills, Tokyo, Japan International Gas Turbine Congress IGTC Nov 15-20, 2015 P.Stathopoulos J.Vinkeloe C. O.Paschereit inproceedings Vey2015a 2015 AIAA paper no. 2015-3392 AIAA Aviation, 33rd AIAA Applied Aerodynamics Conference, June 22-26, 2015, Dallas, Texas, USA 978-1-62410-363-6 10.2514/6.2015-3392 S.Vey D.Marten G.Pechlivanoglou C. N.Nayeri C. O.Paschereit inproceedings VonGosen.2015 2015 AIAA paper no. 2015-0782 AIAA SciTech, 53rd Aerospace Sciences Meeting, 5-9 January, Kissimmee , Florida, USA 10.2514/6.2015-0782 F.Von Gosen F.Ostermann R.Woszidlo C. N.Nayeri C. O.Paschereit inproceedings Huang2015a 2015 AIAA paper no. 2015-2310 AIAA Aviation, 45th AIAA Fluid Dynamics Conference, June 22-25, 2015, Dallas, Texas, USA 978-1-62410-362-9 10.2514/6.2015-2310 X.Huang S.Vey M.Meinke W.Schroeder G.Pechlivanoglou C. N.Nayeri C. O.Paschereit inproceedings Vey2015a 2015 ASME Paper GT2015-43407 V009T46A021 (6 pages) Results from a quantitative tuft flow visualization of a utility scale wind turbine undergoing a yaw movement are presented. Based on the turbine’s SCADA data suitable pre- and post-yaw timeframes were defined and the surface flowfields were analysed. A distinct asymmetry between the surface flow patterns of the 90° and 270° azimutal blade positions was observed in the pre-yaw timeframe. After the turbine yawed back into the wind the symmetry was restored. Yaw-misalignment is a source of dynamic loads which limit a turbine’s life time. The characterization of the involved flow structures and their dynamics is an essential step towards possible future load alleviation techniques. The quantitative tuft flow visualization technique is a measurement tool that can be used to assess the surface flow field. Proceedings of ASME Turbo Expo 2015, June 15-19, 2015, Montreal, Quebec, Canada 978-0-7918-5680-2 10.1115/GT2015-43407 S.Vey H. M.Lang C. N.Nayeri C. O.Paschereit G.Pechlivanoglou G.Weinzierl article Vey2014a Journal of Physics: Conference Series 2014 524 1 http://iopscience.iop.org/1742-6596/524/1/012011/pdf/1742-6596_524_1_012011.pdf The Science of Making Torque from Wind 2014 10.1088/1742-6596/524/1/012011 S.Vey H. M.Lang C. N.Nayeri C. O.Paschereit G.Pechlivanoglou article DuroxMBMVSC2013 Combustion and Flame 2013 160 9 1729--1742 10.1016/j.combustflame.2013.03.004 D.Durox J. P.Moeck J.-F.Bourgouin P.Morenton M.Viallon T. S.Schuller S.Candel inproceedings Vey2012 2012 AIAA paper no. 2012-317 http://arc.aiaa.org/doi/pdfplus/10.2514/6.2012-317 50th AIAA Aerospace Science Meeting, Nashville, Tennessee, USA, Jan. 9-12 10.2514/6.2012-317 S.Vey C. N.Nayeri C. O.Paschereit D.Greenblatt inproceedings vey2011 2011 2 614-625 http://toc.proceedings.com/10945webtoc.pdf Proc. 51st Israel Annual Conference on Aerospace Sciences 2011, Feb 23-24, Tel-Aviv and Haifa, Israel 978-1-61782-401-2 S.Vey C. N.Nayeri D.Greenblatt C. O.Paschereit article TerhaarVAS2010 International Communications in Heat and Mass Transfer 2010 37 5 457-462 07351933 10.1016/j.icheatmasstransfer.2010.01.009 S.Terhaar A.Velazquez J. R.Arias M.Sanchez-Sanz inproceedings Vey2010 2010 AIAA paper no. 2010-4865 http://pdf.aiaa.org/preview/2010/CDReadyMFD10_2120/PV2010_4865.pdf 40th Fluid Dynamics Conference and Exhibit, June 28 - July 1, 2010, Chicago, Illinois S.Vey D.Greenblatt C. N.Nayeri C. O.Paschereit inproceedings Vey2010a 2010 AIAA paper no. 2010-1222 http://pdf.aiaa.org/preview/2010/CDReadyMASM10_1812/PV2010_1222.pdf 48th AIAA Aerospace Science Meeting, January 4 - 7, 2010, Orlando, Florida, USA S.Vey C. N.Nayeri C. O.Paschereit D.Greenblatt inproceedings Kastantin2010 2010 AIAA paper no. 2010-4864 http://pdf.aiaa.org/preview/2010/CDReadyMFD10_2120/PV2010_4864.pdf 40th Fluid Dynamics Conference and Exhibit, 28 June - 1 July 2010, Chicago, Illinois Y.Kastantin S.Vey C. N.Nayeri C. O.Paschereit article Greenblatt2009 AIAA Journal 2009 47 12 2845-2856 10.2514/1.41767 D.Greenblatt S.Vey C. O.Paschereit R.Meyer inproceedings Bachmann2009 2009 1-20 Proc. 49th Israel Annual Conference on Aerospace Sciences, Tel Aviv, Israel 9781605609836 M.Bachmann C. O.Paschereit S.Utehs S.Vey D.Greenblatt inproceedings Greenblatt2008 2008 paper No. AIAA 2008-4186 Online-Ver\"ffentlichung Proc. 4th Flow Control Conference, Invited Paper, 23-26 June 2008, Seattle, Washington, USA 978-1-56347-942-7 D.Greenblatt C. S.Yao S.Vey C. O.Paschereit R.Meyer inproceedings Vey2008 2008 AIAA paper no. 2008-1058 Online-Veröffentlichung Proc. 46th AIAA Aerospace Sciences Meeting and Exhibit, 7-10 January 2008, Reno, Nevada, USA 1-56347-937-0 S.Vey D.Greenblatt C. O.Paschereit R.Meyer inproceedings Lacarelle2007 2007 AIAA paper no. 2007-1417 45th AIAA Aerospace Sciences Meeting and Exhibit, Jan. 8-11, 2007, Reno, Nevada, USA A.Lacarelle J. P.Moeck H. J.Konle S.Vey C. N.Nayeri C. O.Paschereit inproceedings Flohr2001 2001 ASME Turbo Expo, June 4-6, 2001, New Orleans, Louisiana P.Flohr C. O.Paschereit B.van Roon inproceedings Schuermans2000a 2000 ASME Turbo Expo, May 13-16, 2000, Munich, Germany B.Schuermans W.Polifke C. O.Paschereit J.van der Linden