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Moving Ground and Reynolds Effect on Tractor-Trailer
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English
Abstract
A tractor-trailer at 1/10 scale has been tested in the Max Sardou Wind Tunnel (MSWT). This model is with four axels and free rotating wheels.
We have produced 16 very different configurations. Each configuration has been tested in line (yaw = 0°) and with 5° of yaw (32 sub configurations); For each configuration, we have mesured six components properties of the model at low speed (33,5 m/s), with stationary and with moving ground; and then, at high speed (51 m/s), also with and without moving ground.
So, we get 4 groups of 32 measures per type of measurements. Population of each group seems reasonably big enough in order to justify a statistical analysis of the ground motion effect and of speed of the test.
In order to help this analysis, we have add for two configurations Reynolds tests (between 17 and 51 m/s with 5 m/s steps). These Reynolds tests have been conducted in belt on and belt off mode.
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Citation
Sardou, M., "Moving Ground and Reynolds Effect on Tractor-Trailer," SAE Technical Paper 870707, 1987, https://doi.org/10.4271/870707.Also In
References
- “MOVING GROUND EFFECT AND SPEED INTERACTION ON SEDAN CARS AND RACING CARS” SARDOU Mr MAX SARDOU S.A. VON KARMAN INSTITUTE 1986/05 March 17/21 1986
- “REYNOLDS EFFECT AND MOVING GROUND EFFECT TESTED IN A QUARTER SCALE WIND TUNNEL OVER AN HIGH SPEED MOVING BELT” SARDOU Mr MAX SARDOU S.A. FLUID MECHANICS LABORATORIUM AACHEN 6th colloquium on industrial aerodynamic June 19/21 1985 Journal of Wind Engineering and Industrial Aerodynamics 22 1986 245 270 Elsevier science publishers B.V. Amsterdam
- “THE EFFECT OF FRONT EDGE ROUNDING AND REAR EDGE SHAPING ON THE AERODYNAMIC DRAG OF BLUFF VEHICLES IN GROUND PROXIMITY” COOPER Mr KEVIN R. OTTAWA N.A.E. CANADA - INTERNATIONAL CONGRESS DETROIT MICHIGAN Feb. 25 March 1 1985 S.A.E. Paper 850288