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Research on Support Device Interference Effect of a Heavy Truck Model in Wind Tunnel
Technical Paper
2022-01-5066
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Event:
Automotive Technical Papers
Language:
English
Abstract
This article mainly studies the support interference effect elimination and test
method of the scale model of a heavy truck in a wind tunnel. According to the
formation mechanism, the support interference effect can be divided into two
parts: aerodynamic interference effect (the aerodynamic drag of the support
device) and flow field interference effect (the aerodynamic change of the tested
model caused by the flow field of the support device); the former is mainly the
horizontal rod and the vertical rod of the support device. However, the latter
is related to the change of the body flow field, which needs to be
quantitatively evaluated by means of computational fluid dynamics (CFD)
simulation. In this article, by optimizing the airfoil section structure of the
support device and adjusting its distance from the vehicle body, the aerodynamic
interference effect proportion of the support device is reduced from 22% to
11.8%, while the flow field interference effect proportion is only 0.4%.
Therefore, in engineering practice, the influence of the flow field interference
effect can be ignored to simplify the test process.
Authors
Topic
Citation
Liu, X., Wang, J., Zhang, Y., and Dong, L., "Research on Support Device Interference Effect of a Heavy Truck Model in Wind Tunnel," SAE Technical Paper 2022-01-5066, 2022, https://doi.org/10.4271/2022-01-5066.Also In
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