Unsteady aerodynamic flow investigation around a simplified square-back road vehicle with drag reduction devices

Journal of Fluids Engineering, Transactions of the ASME

Volumn 134, Issue 6, 2012, Pages

  Khalighi, Bahram ^a   Chen, Kuo Huey ^a   Iaccarino, G ^b  

^a GENERAL MOTORS CORPORATION   (United States)

^b Stanford University   (United States)

Author keywords

active flow control; aerodynamic drag; drag reduction; unsteady RANS; vehicle aerodynamics

Indexed keywords

ACTIVE FLOW CONTROL; BASE PRESSURE; BASELINE CONFIGURATIONS; EXPERIMENTAL DATA; FLOW INVESTIGATIONS; PRESSURE RECOVERY; RECIRCULATION REGIONS; ROAD VEHICLES; SHEDDING FREQUENCIES; TURBULENCE INTENSITY; UNSTEADY AERODYNAMICS; UNSTEADY RANS; VEHICLE AERODYNAMICS; VELOCITY FIELD;

AERODYNAMIC DRAG; AERODYNAMICS; EXPERIMENTS; NAVIER STOKES EQUATIONS; TURBULENCE MODELS; VELOCITY; WAKES;

DRAG REDUCTION;

EID: 84862293126     PISSN: 00982202     EISSN: 1528901X     Source Type: Journal    
DOI: 10.1115/1.4006643     Document Type: Article

References (26)

1. Duell, E. G., and George, A. R., 1993, Measurements in the Unsteady Near Wakes of Ground Vehicle Bodies., SAE Paper No. 930298.
2. Duell, E. G., and George, A. R., 1992, Unsteady Wake Flows of Ground Vehicle Bodies., Proceedings of the AIAA 10th Applied Aerodynamics Conference, AIAA Paper No. 92-2641.
3. Han, T., 1989, Computational Analysis of Three-Dimensional Turbulent Flow around a Bluff Body in Ground Proximity., AIAA J., 27 (9), pp. 1213-1219. 10.2514/3.10248
4. Hucho, W.-H., 1998, Aerodynamics of Road Vehicles, 4th edition, SAE International, Warrendale, PA.
5. Ahmed, S. R., Ramm, G., and Faltin, G., 1984, Some Salient Features of the Time Averaged Ground Vehicle Wake., SAE Paper No. 840300.
6. Gilliéron, P., and Kourta, A., 2009, Aerodynamic Drag Reduction by Vertical Splitter Plates., Exp. Fluids, 48 (1), pp. 1-16. 10.1007/s00348-009- 0705-7
7. Yao, J., Mouzoun, O., Yao, Y., and Mason, P., 2010, Unsteady RANS Calculation of Flow over Ahmed Car Model., Proceedings of the IUTAM Symposium on Unsteady Separated Flows and their Control IUTAM Book series, 14 (6), pp. 471-476.
8. Aider, J.-L., Beaudoin, J.-F., and Wesfreidm, J. E., 2010, Drag and Lift Reduction of a 3D Bluff-Body Using Active Vortex Generators., Exp. Fluids, 48 (5), pp. 771-789. 10.1007/s00348-009-0770-y
9. Mair, W. A., 1978, Drag Reducing Techniques., Aerodynamic Drag Mechanisms of Bluff Bodies and Road Vehicles, G. Sovran, G., ed., Plenum Press, New York, pp. 161-187.
10. Mair, W. A., and Wong, D. T. M., 1983, Boat-Tailed After-bodies of Square Section as Drag Reduction Devices., J. Wind Eng., 12 (2), pp. 229-235. 10.1016/0167-6105(83)90071-5 (Pubitemid 13603765)
11. Mair, W. A., 1969, Reduction of Base Drag by Boat-Tailed After-bodies in Low-Speed Flow., Aeronaut. Q., 20, pp. 307-320.
12. Nash, J. F., Quincey, V. G., and Callinan, J., 1963, Experiments on Two-Dimensional Base Flow at Subsonic and Transonic Speeds., ARC RM No. 3427.
13. Khalighi, B., Zhang, S., Koromilas, C., Balkanyi, S. R., Bernal, L. P., Iaccarino, G., and Moin, P., 2001, Experimental and Computational Study of Unsteady Wake Flow Behind a Bluff Body with a Drag Reducing Device., SAE Paper No. 2001-01B-207.
14. Roshko, A., 1954, On the Drag and Shedding Frequency of Two-Dimensional Bluff Bodies., NACA Memorandum No. TN 3169.
15. Roumeas, M., Gillieron, P., and Kourta, A., 2009, Analysis and Control of the Near-Wake Flow over a Square-Back Geometry., Comput. Fluids, 38, pp. 60-70. 10.1016/j.compfluid.2008.01.009
16. Nash, J. F., Quiency, V. G., and Callinan, J., 1966, Experiments on Two-Dimensional Base Flow at Subsonic and Transonic Speeds., ARC R M 3427.
17. Brown, Y. A., Windsor, S., and Gaylard, A. P., 2010, The Effect of Base Bleed and Rear Cavities., SAE Paper No. 2010-01-0512.
18. Mansingh, V., and Oosthuizen, P. H., 1990, Effects of Splitter Plates on the Wake Flow behind a Bluff Body., AIAA J., 28, pp. 778-783. 10.2514/3.25119
19. Mason, W. T., and Beebe, P. S., 1978, The Drag Related Flow Field Characteristics of Trucks and Buses., Aerodynamic Drag Mechanisms of Bluff Bodies and Road Vehicles, G. Sovran, ed., Plenum Press, New York, pp. 45-84.
20. Freund, J. B., and Mungal, M. G., 1994, Drag and Wake Modification of Axisymmetric Bluff Bodies using Coanda Blowing., J. Aircr., 31, pp. 572-578. 10.2514/3.46532
21. Perzon, S., Janson, J., and Höglin, L., 1999, On Comparison between CFD Methods and Wind Tunnel Tests on a Bluff Body., Vehicle Aerodynamics and Wind Noise (SP-1441), SAE International, Warrendale, PA, pp. 133-145.
22. Durbin, P. A., 1995, Separated Flow Computations with the k-e-v2 Model., AIAA J., 33, pp. 659-664. 10.2514/3.12628
23. Iaccarino, G., Ooi, A., Durbin, P. A., and Behnia, M., 2003, Reynolds Averaged Simulation of Unsteady Separated Flow., Int. J. Heat Fluid Flow, 24, pp. 147-156. 10.1016/S0142-727X(02)00210-2 (Pubitemid 36370746)
24. Balkanyi, S. R., Bernal, L. P., Khalighi, B., and Sumantran, V., 2000, Dynamics of Manipulated Bluff Body Wakes., AIAA meeting, Denver, Colorado.
25. Ansys, Inc., 2010, FLUENT 12 Documentation., Ann Arbor, MI.
26. Jeong, J., and Hussain, F., 1995, On the Identification of a Vortex., J. Fluid Mech., 285, pp. 69-94. 10.1017/S0022112095000462