TY - JOUR AU - Kalmár, László AU - Vígh, V AU - Régert, Tamás TI - Investigation on the thermal management of a high power LED module JF - BULLETIN OF THE TRANSILVANIA UNIVERSITY OF BRASOV SERIES I - ENGINEERING SCIENCES J2 - BULL TRANSILVANIA UNIV SER I VL - 6 PY - 2013 IS - 1 SP - 19 EP - 26 PG - 8 SN - 2065-2119 UR - https://m2.mtmt.hu/api/publication/2461302 ID - 2461302 LA - English DB - MTMT ER - TY - CONF AU - Kalmár, László AU - Hellmann, Ralf AU - Régert, Tamás AU - Vígh, Viktor ED - Bitay, Enikő TI - UV LED modulban kialakuló hőátviteli folyamat vizsgálata T2 - FMTÜ XVIII. Nemzetközi Tudományos Konferencia PB - Erdélyi Múzeum Egyesület (EME) CY - Kolozsvár T3 - Műszaki Tudományos Füzetek - FMTÜ, ISSN 2067-6808 ; 18. PY - 2013 SP - 171 EP - 176 PG - 6 DO - 10.36243/fmtu-2013.34 UR - https://m2.mtmt.hu/api/publication/2461292 ID - 2461292 N1 - ISSN 2067-6 808 LA - Hungarian DB - MTMT ER - TY - JOUR AU - Kalmár, László AU - Hellmann, R AU - Régert, Tamás AU - Vígh, V TI - UV LED modul által keltett hőátviteli folyamat vizsgálata JF - GÉP J2 - GÉP VL - 64 PY - 2013 IS - 2 SP - 31 EP - 34 PG - 4 SN - 0016-8572 UR - https://m2.mtmt.hu/api/publication/2461287 ID - 2461287 LA - Hungarian DB - MTMT ER - TY - JOUR AU - Gulyás, András AU - Bodor, A AU - Régert, Tamás AU - Jánosi, Imre Miklós TI - PIV measurement of the flow past a generic car body with wheels at LES applicable Reynolds number JF - INTERNATIONAL JOURNAL OF HEAT AND FLUID FLOW J2 - INT J HEAT FLUID FL VL - 43 PY - 2013 SP - 220 EP - 232 PG - 13 SN - 0142-727X DO - 10.1016/j.ijheatfluidflow.2013.05.012 UR - https://m2.mtmt.hu/api/publication/2447269 ID - 2447269 N1 - Department of Fluid Mechanics, Budapest University of Technology and Economics, 1111 Budapest, Bertalan L. u. 4-6, Hungary Department of Fluid Mechanics, Budapest University of Technology and Economics, Hungary Von Karman Laboratory of Environmental Flow, Department of Physics of Complex Systems, Eotvos Lorand University, Hungary Cited By :4 Export Date: 19 May 2020 CODEN: IJHFD Correspondence Address: Gulyás, A.; Department of Fluid Mechanics, Budapest University of Technology and Economics, 1111 Budapest, Bertalan L. u. 4-6, Hungary; email: gulyas@ara.bme.hu AB - Experiments by using 2D-2C Particle Image Velocimetry (PIV) were carried out and reported concerning the flow field past a generic car body (modified Ahmed body) which is equipped with wheels and wheel-arches. The Reynolds number was chosen to not exceed 2E+5 based on the height of the Ahmed body which makes it possible to investigate the same configuration by means of Large Eddy Simulation (LES). The wheels were rotating but the ground was stationary. The wheel-ground contact was realized by means of small rectangular openings below the wheels in the ground plane in which the wheels were immersed. The transition contour of the immersed wheels and the ground, as well as the rectangular openings below the wheels were properly sealed to prevent parasite flow and to provide well defined boundary conditions for an upcoming LES investigation. The flow field was measured in several planes with normal vectors pointing towards the directions normal to the free stream. Statistical characteristics of the flow are provided and discussed. © 2013 Elsevier Inc. All rights reserved. LA - English DB - MTMT ER - TY - JOUR AU - Lukács, Eszter AU - Régert, Tamás TI - Pressure loss reduction of a Borda–Carnot sudden expansion applying a passive flow control method JF - PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART A-JOURNAL OF POWER AND ENERGY J2 - P I MECH ENG A-J POW VL - 226 PY - 2012 IS - 2 SP - 182 EP - 191 PG - 10 SN - 0957-6509 DO - 10.1177/0957650911429917 UR - https://m2.mtmt.hu/api/publication/2682712 ID - 2682712 LA - English DB - MTMT ER - TY - CONF AU - Kalmár, László AU - Hellmann, R AU - Régert, Tamás AU - Varga, Z ED - Csibi, Vencel TI - Nagyteljesítményű UV LED modul által keltett hővezetési folyamat numerikus vizsgálata T2 - OGÉT 2012, XX. Nemzetközi Gépészeti Találkozó PB - Erdélyi Magyar Műszaki Tudományos Társaság (EMT) C1 - Kolozsvár T3 - Nemzetközi Gépészeti Találkozó (OGÉT), ISSN 2068-1267 ; 20. PY - 2012 SP - 209 EP - 213 PG - 528 UR - https://m2.mtmt.hu/api/publication/2460720 ID - 2460720 LA - Hungarian DB - MTMT ER - TY - CHAP AU - Gulyás, András AU - Bodor, A AU - Régert, Tamás AU - Jánosi, Imre Miklós ED - Vad, János TI - PIV measurement of the flow past a generic car body with wheels at LES applicable Reynolds number T2 - Conference on Modelling Fluid Flow (CMFF’12): The 15th International Conference on Fluid Flow Technologies PB - Budapest University of Technology and Economics CY - Budapest SN - 9789630845878 PY - 2012 SP - 213 EP - 220 PG - 8 UR - https://m2.mtmt.hu/api/publication/2451470 ID - 2451470 LA - English DB - MTMT ER - TY - CONF AU - Lukács, Eszter AU - Régert, Tamás TI - Reducing the pressure loss in a sudden expansion by passive flow control elements T2 - Proceedings of the 10th International Symposium on Experimental Computational Aerothermodynamics of Internal Flows C1 - Brussels PY - 2011 SP - 1 EP - 6 PG - 6 UR - https://m2.mtmt.hu/api/publication/2665551 ID - 2665551 LA - English DB - MTMT ER - TY - CHAP AU - Nagy, László AU - Régert, Tamás AU - Lohász, Máté Márton ED - Tuliszka-Sznitko, Ewa ED - Morzyński, Marek TI - Large-Eddy Simulation in the vicinity of the RAF-6E airfoil in a reduced domain T2 - XIX Polish National Fluid Dynamics Conference: KKMP2010 PB - Sorus CY - Poznan SN - 9788389949905 PY - 2010 PG - 9 UR - https://m2.mtmt.hu/api/publication/24573180 ID - 24573180 N1 - CD-ROM AB - Large-Eddy Simulation using Dynamic Smagorinsky Sub-Grid Scale model was performed to investigate the flow past an airfoil at an angle of attack of 5◦ , at chord Reynolds number of 122000. The simulations were carried out using the incompressible implicit second-order finite volume method with a collocated variable arrangement implemented in ANSYS-FLUENT commercial code. Different computational grids were used both in terms of spanwise size and spanwise grid resolution to investigate its effect on the integral and instantaneous properties of the flow. The simulation scenarios were established in the aspect of the different smallest spanwise domain and finest grid shown the best results compare the measurements moreover 7 flow through number is enough to prepare comparison. Streamwise velocity components and velocity fluctuations of these numerical simulations were compared with Laser Doppler Anemometry measurements. LA - English DB - MTMT ER - TY - CONF AU - Régert, Tamás AU - Tremblais, B AU - David, L TI - Parallelized 3D optical flow method for fluid mechanics applications T2 - Proceedings of the 3DPTV 2010 conference on 3D data processing C1 - Paris PY - 2010 SP - 1 EP - 8 PG - 8 UR - https://m2.mtmt.hu/api/publication/2660799 ID - 2660799 LA - English DB - MTMT ER -