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Numerical simulation of flow field around the race car in case. (English) Zbl 1356.76140

Summary: Purpose{ } - The purpose of this paper is to gain a better understanding of the flow field structure around the race car in two cases: stationary wheel and rotating wheel. In addition, this paper also illustrates and clarifies the influence of wheel rotation on the aerodynamic characteristics around the race car. { }Design/methodology/approach{ } - The author uses steady Reynolds-Averaged Navier-Stokes (RANS) equations with the Realizable \(k\)-\(\epsilon\) model to study model open-wheel race car. Two cases are considered, a rotating wheel and stationary wheel. { }Findings{ } - The results obtained from the study are presented graphically, pressure, velocity distribution, the flow field structure, lift coefficient (\(C_{l}\)) and drag coefficient (\(C_{d}\)) for two cases and the significant influence of rotating case on flow field structure around wheel and aerodynamic characteristics of race car. The decreases in \(C_{d}\) and \(C_{l}\) values in the rotating case for the race car are 16.83 and 13.25 per cent, respectively, when compared to the stationary case. { }Originality/value{ } - Understanding the flow field structures and aerodynamic characteristics around the race car in two cases by the steady RANS equations with the Realizable \(k\)-\(\epsilon\) turbulence model.

MSC:

76G25 General aerodynamics and subsonic flows

Software:

FLUENT; ANSYS
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References:

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