CFD investigation on wheel rotation modelling
Artikel i vetenskaplig tidskrift, 2018

It is well understood in the automotive community that wheels are a major contributor to the aerodynamic drag of passenger vehicles. The flow around rotating wheels is very complex due to the many separation regions created by very small tyre features and by the contact area of the tyre with the ground. Correct modelling of wheel rotation requires accuracy in the representation of the tyre geometry and proper boundary conditions to simulate the rotation. This paper proposes a hybrid approach for simulating tyre rotation which is simple to implement and does not suffer from the limitations of a sliding mesh approach, at the region where the tyre meets the ground. The method is first evaluated on a single wheel that is free standing and the results are compared to a full sliding mesh computation, which is considered to be the best possible numerical solution. The technique is then implemented on a complete vehicle model simulation and the results are compared against wind tunnel force measurements. The good agreement obtained in these test cases shows that the proposed approach is a promising solution to a more accurate numerical simulation of rotating wheels.

MRFg

wheel aerodynamics

rotation modelling

Författare

Teddy Hobeika

Chalmers, Mekanik och maritima vetenskaper, Fordonsteknik och autonoma system

Simone Sebben

Chalmers, Mekanik och maritima vetenskaper, Fordonsteknik och autonoma system

Journal of Wind Engineering and Industrial Aerodynamics

0167-6105 (ISSN)

Vol. 174 241-251

Ämneskategorier

Meteorologi och atmosfärforskning

Strömningsmekanik och akustik

DOI

10.1016/j.jweia.2018.01.005

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Senast uppdaterat

2018-04-09