This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Preliminary Investigation of the Influence of a Ground-Plane Boundary Layer on the Aerodynamic Characteristics of Road Vehicle Models Tested Over a Fixed Ground
Annotation ability available
Sector:
Language:
English
Abstract
Results from a series of experimental measurements are presented in order to investigate the influence of the ground-plane boundary layer on the overall characteristics of a scale model road vehicle. The wind tunnel model is a generic bluff body which has a streamlined forebody, simple wheel representation and interchangeable rear end sections.
The aerodynamic forces and moments were measured via an external 3-component balance at a free stream velocity of 24 m/s. corresponding to Reynolds number of 5.5 × 105 based on model length, over a range of ride heights and yaw angles. The ground plane boundary layer thickness was varied artificially. The influence of wheels and underbody roughness were also investigated.
Recommended Content
Authors
Citation
Ahmadi, M. and Garry, K., "Preliminary Investigation of the Influence of a Ground-Plane Boundary Layer on the Aerodynamic Characteristics of Road Vehicle Models Tested Over a Fixed Ground," SAE Technical Paper 960675, 1996, https://doi.org/10.4271/960675.Also In
Vehicle Aerodynamics: Wind Tunnels, Cfd, Aeroacoustics, and Ground Transportation Systems
Number: SP-1145; Published: 1996-02-01
Number: SP-1145; Published: 1996-02-01
References
- Carr, G.W. “ The MIRA quarter scale Wind Tunnel ” MIRA Report No. 1961/11
- Garry, K.P “ Preliminary wind tunnel tests on the influence of ground board length on the aerodynamic drag of simple commercial vehicle models. ” Cranfield University, College Of Aeronautics Report No. 8619 1986
- Janssen, L.J Hucho, W.H. “ Aerodynamishe Formoptimierung der type VW-Golf and VW- Scirocco.” Kolloquim ueber Industrie - aerodynamic Aachen 46 49 1974
- Ahmed, S.R “ Influence of base slant angle on the -wake structure and drag of road vehicles ” ASME Journal of fluid engineering 105 1983 429 433
- Narasimha, R. Prasad, S.N “ Leading edge shape for fiat plate boundary layer studies ” Experiments in fluids 17 5 1994