A Review of Reynolds Number Effects on the Aerodynamics of Commercial Ground Vehicles

SAE International Journal of Commercial Vehicles

Volumn 5, Issue 2, 2012, Pages 628-639

  Wood, Richard ^a  

^a SOLUS Solutions and Technologies LLC   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

AERODYNAMICS; AUTOMOBILES; BOUNDARY LAYERS; COMMERCIAL VEHICLES; FLUID DYNAMICS; REYNOLDS NUMBER; VEHICLE WHEELS; VEHICLES; WHEELS; WIND TUNNELS;

BOUNDARY LAYER TRANSITION CONTROL; COMPUTATIONAL STUDIES; HIGH REYNOLDS NUMBER; REYNOLDS NUMBER EFFECT; SURFACE CURVATURES; VEHICLE AERODYNAMICS; VEHICLE COMPONENTS; WIND TUNNEL TESTS;

GROUND VEHICLES;

EID: 84871816538     PISSN: 1946391X     EISSN: 19463928     Source Type: Journal    
DOI: 10.4271/2012-01-2045     Document Type: Review

References (107)

1. Alam, F., Watkins, S., Zimmer, G., and Humphris, C., "Effects of Vehicle A-pillar Shape on Local Mean and Time-Varying Flow Properties," SAE Technical Paper 2001-01-1086, 2001, doi:10.4271/2001-01-1086.
2. Anderson, J., Firey, J., Ford, P., and Kieling, W., "Truck Drag Components by Road Test Measurement," SAE Technical Paper 640794, 1964, doi: 10.4271/640794.
3. Arcas, D., Browand, F., and Hammache, M., "Flow Structure in the Gap Between Two Bluff Bodies," AIAA 2004-2250, 2004.
4. Axon, L., "The Aerodynamic Characteristics of Automobile Wheels - CFD Prediction and Wind Tunnel Experiment," PhD thesis, Cranfield University, 1999.
5. Axon, L., Garry, K., and Howell, J., "The Influence of Ground Condition on the Flow Around a Wheel Located Within a Wheelhouse Cavity," SAE Technical Paper 1999-01-0806, 1999, doi:10.4271/1999-01-0806.
6. Baker, C. J. and Humphreys, N. D., "Assessment of the Adequacy of Various Wind Tunnel Techniques to Obtain Aerodynamic Data for Ground Vehicles in Cross Winds," Journal of Wind Engr. And Ind. Aerodynamics 60 (1996) 49-68, 1996.
7. Barlow, J. B., Guterres, R., and Ranzenbach, R., "Rectangular Bodies with Radiused Edges in Ground Effect," AIAA-99-3153, 1999.
8. rd Edition. John Wiley and Sons Inc. 1984.
9. nd Edition. MechAero Publishing, 2001.
10. Braslow, A. L., Harris, R. V., and Hicks, R. M., "Use of Grit-Type Boundary-Layer Trips on Wind Tunnel Models," NASA TN D-3579, 1966.
11. Final Report, Part I- Experimental Measurement of the Flowfield of Heavy Trucks," DE-AC 26-98EE50512.
12. Broward, F., Radovich, C., and Boivin, M., "Fuel Saving by Means of Flaps Attached to the Base of a Trailer: Field Test Results,".
13. Buckley, F. T., Walston, W. H., and Marks, C. H., "Fuel Savings from Truck Aerodynamic Drag Reducers and Correlation with Wind-Tunnel Data," J. Energy, Vol 2, No. 6, 1978.
14. Buckley, F., Marks, C., and Walston, W., "Analysis of Coast-Down Data to Assess Aerodynamic Drag Reduction on Full-Scale Tractor-Trailer Trucks in Windy Environments," SAE Technical Paper 760850, 1976, doi: 10.4271/760850.
15. Buckley, F. T. and Marks, C. H., "Feasibility of Active Boundary-Layer-Control Methods for Reducing Aerodynamic on Tractor Trailer Trucks," Journal of Ind. Aerodynamics, 4(1979) 133-148.
16. Buckley, F. and Sekscienski, W., "Comparisons of Effectiveness of Commercially Available Devices for the Reduction of Aerodynamic Drag on Tractor-Trailers," SAE Technical Paper 750704, 1975, doi: 10.4271/750704.
17. Buresti, G., Fedeli, R., and Ferraresi, A., "Influence of Afterbody Rounding on the Pressure Drag of an Axisymmetric Bluff Body". Jouranl of Wind Engr. and Ind. Aerodynamics, 69-71 (1997) 179-188.
18. Burgin, K., Adey, P. C. and Beatham, J. P., "Wind Tunnel Tests on Road Vehicle Models Using a Moving Belt Simulation of Ground Effect," Journal of Wind Engr. and Ind. Aerodynamics, 22 (1986) 227-236.
19. Cogotti, A., "Aerodynamic Characteristics of Car Wheels". International Journal of Vehicle Design, SP 3, 1983, pp. 173-196.
20. Cooper, K., "The Wind Tunnel Testing of Heavy Trucks to Reduce Fuel Consumption," SAE Technical Paper 821285, 1982, doi: 10.4271/821285.
21. Cooper, K., "Truck Aerodynamics Reborn - Lessons from the Past," SAE Technical Paper 2003-01-3376, 2003, doi:10.4271/2003-01-3376.
22. Cooper, K. R., "The Wind Tunnel Simulation of Surface Vehicles," Journal of Wind Engineering and Industrial Aerodynamics Vol. 17, 1984, p. 167-198.
23. Cooper, K., Gerhardt, H., Whitbread, R., Garry, K., and Carr, G., "A Comparison of Aerodynamic Drag Measurements on Model Trucks in Closed-Jet and Open-Jet Wind Tunnels," Motor Industries Research Association, Nuneaton (Gt. Britain), Journal of Wind Engineering and Industrial Aerodynamics, 22 (1986) 299-316.
24. Cooper, K., Mason, W., and Bettes, W., "Correlation Experience with the SAE Wind Tunnel Test Procedure for Trucks and Buses," SAE Technical Paper 820375, 1982, doi: 10.4271/820375.
25. Cooper, K., "The Effect of Front-Edge Rounding and Rear-Edge Shaping on the Aerodynamic Drag of Bluff Vehicles in Ground Proximity," SAE Technical Paper 850288, 1985, doi: 10.4271/850288.
26. Cooper, K. R., "Bluff-Body Aerodynamics as Applied to Vehicles," Journal of Wind Engineering and Industrial Aerodynamics Vol. 49, 1993, p. 1-22.
27. Cooper, K. and Leuschen, J., "Model and Full-Scale Wind Tunnel Tests of Second-Generation Aerodynamic Fuel Saving Devices for Tractor-Trailers," SAE Technical Paper 2005-01-3512, 2005, doi:10.4271/2005-01-3512.
28. Cooper, K. R., "The Wind Tunnel Simulation of Wind Turbulence for Surface Vehicle Testing," Journal of Wind Engineering and Industrial Aerodynamics Vol. 38, 1991, p. 71-81.
29. Cooper, K. R. and Campbell, W. F., "An Examination of the Effects of Wind Turbulence on the Aerodynamic Drag of Vehicles.: Journal of Wind Engineering and Industrial Aerodynamics, Vol. 9, 1981, pp. 167-180.
30. Croll, R., Gutierrez, W., Hassan, B., Suazo, J. et al., "Experimental Investigation of the Ground Transportation Systems (GTS) Project for Heavy Vehicle Drag Reduction," SAE Technical Paper 960907, 1996, doi: 10.4271/960907.
31. Damiani, F., Iaccarino, G., Kalitzin, G. and Khalighi, B., "Unsteady Flow Simulations of Wheel-Wheelhouse Configurations," AIAA 2004-2344, 2004.
32. Delaney, N. K., and Sorensen, N E., "Low-Speed Drag of Cylinders of Various Shapes," NACA TN 3038, 1953.
33. Drollinger, R., "Heavy Truck Aerodynamics," SAE Technical Paper 870001, 1987, doi:10.4271/870001.
34. Dryden, H. L., Schubauer, G. B., Mock, W. C. and Skranstad, H. K., "Measurements of intensity and Scale of Wind Tunnel Turbulence and Their Relation to the Critical Reynolds Number of Spheres," NACA Rpt. No. 581.
35. El-Alti, M., Chernoray, V., Jahanmiri, M. and Davidson, L., "Experimental and Computational Studies of Active Flow Control on a Model Truck-Trailer," 2011 Proc. of the Int. Conf on Experimental Fluid Mechanics, Vol. 2, pp. 60-615, 2011.
36. Englar, R., "Advanced Aerodynamic Devices to Improve the Performance, Economics, Handling and Safety of Heavy Vehicles," SAE Technical Paper 2001-01-2072, 2001, doi:10.4271/2001-01-2072.
37. Flynn, H. and Kyropoulos, P., "Truck Aerodynamics," SAE Technical Paper 620531, 1962, doi: 10.4271/620531.
38. Fackrell, J. E. and Harvey, J. K., "The Aerodynamics of an Isolated Road Wheel," In Proc. of AIAA 2nd Symposium on Aerodynamics and Competition Automobiles, volume 16, pages 119-125, Los Angeles, CA, 1974.
39. Funderburk, R. and Carper, H., "Wind Tunnel Investigation of an Inflatable Aerodynamic Boattail for Tractor-Trailers," SAE Technical Paper 960908, 1996, doi: 10.4271/960908.
40. Gad-el-Hak, M. and Bushnell, D., "Status and Outlook of Flow Separation Control," AIAA-91-0037, Jan 1991.
41. Gemba, K., "Measurement of Boundary Layer on a Flat Plate," CA. State Univ., Long Beach, Mar. 25, 2007.
42. Gilhaus, A., "The Influence of Cab Shape on Air Drag of Trucks," Journal of Wind Engineering and Industrial Aerodynamics Vol. 9, 1981, p. 77-87.
43. Grunwald, K.J., "Aerodynamic Characteristics of Vehicle Bodies at Crosswind Conditions in Ground Proximity," NASA Tech. Note D-5935, 1970.
44. Croll, R., Gutierrez, W., Hassan, B., Suazo, J. et al., "Experimental Investigation of the Ground Transportation Systems (GTS) Project for Heavy Vehicle Drag Reduction," SAE Technical Paper 960907, 1996, doi: 10.4271/960907.
45. Hammache, M., Michaelian, M., and Browand, F., "Aerodynamic Forces on Truck Models, Including Two Trucks in Tandem," SAE Technical Paper 2002-01-0530, 2002, doi:10.4271/2002-01-0530.
46. Hinson, M., "Measurement of the Lift Produced by an Isolated, Rotating Formula One Wheel Using a New Pressure Measurement System," Master's Thesis, Cranfield University. 1999.
47. Hoerner, S. F., "Fluid-Dynamic Drag: Practical Information on Aerodynamic Drag and Hydrodynamic Resistance," 1965.
48. Hoffman, J., Martindale, B., Arnette, S., Williams, J. et al., "Effect of Test Section Configuration on Aerodynamic Drag Measurements," SAE Technical Paper 2001-01-0631, 2001, doi:10.4271/2001-01-0631.
49. th Edition 1998.
50. Hucho, W., Janssen, L., and Emmelmann, H., "The Optimization of Body Details-A Method for Reducing the Areodynamic Drag of Road Vehicles," SAE Technical Paper 760185, 1976, doi: 10.4271/760185.
51. Kim, M. S. and Geropp, D., "Experimental Investigation of the Ground Effect on the Flow Around Some Two-Dimensional Bluff Bodies with Moving Belt Technique," Journal of Wind Engr. And Ind. Aerodynamics. 74-76 (1998) 511-519.
52. Kirsch, J., Garg, S., and Bettes, W., "Drag Reduction of Bluff Vehicles With Airvanes," SAE Technical Paper 730686, 1973, doi: 10.4271/730686.
53. Knowles, R. D., "Monoposto Racecar Wheel Aerodynamics: Investigation of Near Wake Structure & Support-Sting Interference," PhD Thesis, Cranfield University, 2005.
54. Krajnovic, S. and Davidson, L., "Numerical Study of the Flow Around a Bus-Shaped Body," ASME Transactions, Vol. 125, pp. 500, May 2003.
55. Lindsey, W. F., "Drag of Cylinders of Simple Shapes," NACA Rpt No. 619. 1937.
56. th AIAA Fluid Dynamics Conference and Exhibit. June 28 - July 1, 2004. Portland OR.
57. McManus, J and Zhang, X., "A Computational Study of the Flow Around an Isolated Wheel in Contact with the Ground," ASME 2006, Vol. 128, pp. 520-530.
58. Mears, A., Dominy, R., and Sims-Williams, D., "The Air Flow About an Exposed Racing Wheel," SAE Technical Paper 2002-01-3290, 2002, doi:10.4271/2002-01-3290.
59. Mears, A., Crossland, S., and Dominy, R., "An Investigation into the Flow-Field About an Exposed Racing Wheel," SAE Technical Paper 2004-01-0446, 2004, doi:10.4271/2004-01-0446.
60. Metz, L. and Sensenbrenner, K., "The Influence of Roughness Elements on Laminar to Turbulent Boundary Layer Transition as Applied to Scale Model Testing of Automobiles," SAE Technical Paper 730233, 1973, doi: 10.4271/730233.
61. Morel, T., "Aerodynamic Drag of Bluff Shapes: Characteristics of Hatch Back Cars," General Motors Research Laboratories Report GMR-2581, 1977.
62. Muirhead, V. U. and Saltzman, E. J., "Reduction of Aerodynamic Drag and Fuel Consumption for Tractor Trailer Vehicles", AIAA journal of Energy, Vol. 3,No. 5, pp. 279-284, Sept.-Oct. 1979.
63. Newnham, P., Passmore, M., Howell, J., and Baxendale, A., "On the Optimisation of Road Vehicle Leading Edge Radius in Varying Levels of Freestream Turbulence," SAE Technical Paper 2006-01-1029, 2006, doi:10.4271/2006-01-1029.
64. Olson, M. and Schaub, U., "Aerodynamics of Trucks in Wind Tunnels: The Importance of Replicating Model Form, Model Detail, Cooling System and Test Conditions," SAE Technical Paper 920345, 1992, doi: 10.4271/920345.
65. Pawlowski, F.W., "Wind Resistance of Automobiles," SAE (Detroit), J., 27 (1930).
66. Polhamus, E. C., "Effect of Flow Incidence and Reynolds Number on Low-Speed Aerodynamic Characteristics of Several Noncircular Cylinders with Applications to Directional Stability ad Spinning," NACA TN 4176. Jan. 1958.
67. Peterson, R. L., "Drag Reduction Obtained by the Addition of a Boattail to a Box Shaped Vehicle," NASA CR 163113, 1981.
68. Reubush, D. E. and Putnam, L. E., "An Experiment al and Analytical Investigation of the Effect on Isolated Boattail Drag of Varying Reynolds Number Up To 120 × 106," NASA TN D-8210, 1976.
69. Roshko, A. "Experiments on the flow past a circular cylinder at very high Reynolds number." J. Fluid Mech. Vol. 10, pp. 345-356, 1961.
70. Roy, C. J., Payne, J. and McWherter-Payne, M., "RANS Simulations of a Simplified Tractor/Trailer Geometry," J of Fluids Engr., ASME Vol. 128, pp. 1083, Sept 2006.
71. Rymiszewski, A. J., "Improving Wheeled Vehicle Water Speed by Means of Wheel Shielding," US Army Report No. 8088, 1963.
72. Sakuma, Y, and Ido, A., "Wind Tunnel Experiments on Reducing Separated Flow Region Around Front Ends of Vehicles on Meter-Guage Railway Lines," QR of RTRI, Vol. 50, No. 1, Feb 2009.
73. Sardou, M., "Reynolds Effect and Moving Ground Effect Tested in a Quarter Scale Wind Tunnel Over a High Speed Moving Belt," Journal of Wind Engr. and Ind. Aerodynamics, 22(1986) 245-270.
74. Sardou, M., "Moving Ground and Reynolds Effect on Tractor-Trailer," SAE Technical Paper 870707, 1987, doi: 10.4271/870707.
75. Saunders, J., Watkins, S., Hoffmann, P., and Buckley, F., "Comparison of On-Road and Wind-Tunnel Tests for Tractor-Trailer Aerodynamic Devices, and Fuel Savings Predictions," SAE Technical Paper 850286, 1985, doi: 10.4271/850286.
76. Schewe, G., "Reynolds Number Effects in Flow Around More-or-Less Bluff Bodies," Journal of Wind Engineering and Industrial Aerodynamics Vol. 89, 2001, p. 1267-1289.
77. Schoon, R. and Pan, F., "Practical Devices for Heavy Truck Aerodynamic Drag Reduction," SAE Technical Paper 2007-01-1781, 2007, doi:10.4271/2007-01-1781.
78. Sheridan, A. E. and Grier, S. J., "Drag Reduction Obtained by Modifying a Standard Truck," NASA TM 72846, 1978.
79. Skea, A., Bullen, P., and Qiao, J., "CFD Simulations and Experimental Measurements of the Flow Over a Rotating Wheel in a Wheel Arch," SAE Technical Paper 2000-01-0487, 2000, doi:10.4271/2000-01-0487.
80. Smith, G., "Commercial Vehicle Performance and Fuel Economy," SAE Technical Paper 700194, 1970, doi: 10.4271/700194.
81. Sovran, G., Morel, T., Mason, W.T., eds., "Aerodynamic Drag Mechanisms of Bluff Bodies and Road Vehicles," NewYork: Plenum, 1978.
82. Steers, L., Montoya, L., and Saltzman, E., "Aerodynamic Drag Reduction Tests on a Full-Scale Tractor-Trailer Combination and a Representative Box-Shaped Ground Vehicle," SAE Technical Paper 750703, 1975, doi: 10.4271/750703.
83. Storms, B. and Ross, J., "Aerodynamic Drag Reduction of the Underbody of a Class-8 Tractor-Trailer," SAE Technical Paper 2006-01-3532, 2006, doi:10.4271/2006-01-3532.
84. Storms, B. L., Satran, D. R., Heineck, J. T. and Walker, S. M., "A Study of Reynolds Number Effects and Drag Reduction Concepts on a Generic Tractor Trailer," AIAA 2004-2251. 2004.
85. Storms, B., Satran, D., Heineck, J., and Walker, S., "Detailed Experimental Results of Drag-Reduction Concepts on a Generic Tractor-Trailer," SAE Technical Paper 2005-01-3525, 2005, doi:10.4271/2005-01-3525.
86. Sulitka, M. and Nozicka, J., "Aerodynamic Devices to Reduce the Base- and Underbody Drag of Semitrailer Unit.
87. Sumantran, V. and Sovran, G., "Vehicle Aerodynamics," Society of Automotive Engineers, Inc., Warrendale, PA, PT-49, 1996.
88. Tamas, R. and Tamas, L., "The Effect of Wheels and Wheelhouses on the Aerodynamic Forces Acting on Passenger Cars". Budapest University,.
89. Van Raemdonck, G. M. R. and van Tooren, M. J. L., "Time Averaged Phenomenological Investigation of a Wake Behind a Bluff Body," BBAA VI International Colloquium on Bluff Bodies Aerodynamics and Applications. Milano Italy July 20-24, 2008.
90. Veldhuis, L. and Henneman, B., "Experimental and Numerical Study of Leading Edge Separation on Blunt Bodies," SAE Technical Paper 2007-01-4291, 2007, doi:10.4271/2007-01-4291.
91. Wacker, T., "A Preliminary Study of Configuration Effects on the Drag of a Tractor-Trailer Combination," Thesis- The University of British Columbia, October 1985.
92. Wäschle, A., Cyr, S., Kuthada, T., and Wiedemann, J., "Flow around an Isolated Wheel - Experimental and Numerical Comparison of Two CFD Codes," SAE Technical Paper 2004-01-0445, 2004, doi:10.4271/2004-01-0445.
93. th Australian Fluid Dynamics Conference, Dec 1986.
94. Watkins, S. and Cooper, K., "The Unsteady Wind Environment of Road Vehicles, Part Two: Effects on Vehicle Development and Simulation of Turbulence," SAE Technical Paper 2007-01-1237, 2007, doi:10.4271/2007-01-1237.
95. th Australasian Fluid Mechanics Conference, Auckland, December 8-12, 1988.
96. Watkins, S., Saunders, J. W. and Hoffman, P. H., "Comparison of Road and Wind-Tunnel Drag Reductions for Commercial Vehicles. Journal of Wind Engr. And Ind. Aerodynamics. 49 (1993) 411-420.
97. Watkins, S., "Wind Tunnel Modeling of Vehicle Aerodynamics: With Emphasis on Turbulent Wind Effects in Commercial Vehicle Drag," Thesis Mech Engr, Victorian U of Tech, Nov 1990.
98. Whitbread, L., "Measurement of the Lift Distribution on a Rotating Wheel," Master's Thesis, Cranfield University. 2000.
99. Wiedmann, J and Ewald, B., "Turbulence Manipulation to Increase Effective Reynolds Number in Vehicle,".
100. Wong, H. Y., Cox, R. N. and Rajan, A., "Drag Reduction of Trailer-Tractor Configuration by Aerodynamic Means,".
101. th AIAA Applied Aerodynamics Conference. June 22-25, 2009, San Antonio TX.
102. Zhang, X., Toet, W. and Zerihan, J., "Ground Effect Aerodynamics of Race Cars," ASME 2006, Vol. 59, pp. 33-48.
103. ESDU, Wind Engineering. Vol. 26. Fluid Forces and Moments on Rectangular Blocks, Eng. Sci. Data Unit (London), Item 71016, 1971.
104. SAE International Surface Vehicle Information Report, "Aerodynamic Testing of Road Vehicles - Open Throat Wind Tunnel Adjustment," SAE Standard J2071, Issue March 1990.
105. SAE International Surface Vehicle Recommended Practice, "SAE Wind Tunnel Test Procedure for Trucks and Buses," SAE Standard J1252, Rev. July 2012.
106. SAE International Surface Vehicle Recommended Practice, "Road Load Measurement and Dynamometer Simulation Using Coastdown Techniques," SAE Standard J1263, Issued June 1979.
107. SAE International Surface Vehicle Recommended Practice, "Fuel Consumption Test Procedure - Type II," SAE Standard J1321, Rev. Feb. 2012.