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Review of RANS turbulence models adapted for rotation, curvature and stress-strain lag effects in incompressible flows

DOI: 10.1615/ICHMT.2015.THMT-15.430
pages 251-254

Alexandra Stefanescu
Turbulence Modelling Research Centre, University of Manchester, M13 9PL, Manchester, United Kingdom

Alistair Revell
Computational Fluid Dynamics group, Modelling and Simulation Centre, School of MACE, The University of Manchester, UK

Timothy J. Craft
Turbulence Mechanics Group, School of Mechanical, Aerospace and Civil Engineering, The University of Manchester, PO Box 88, Manchester M13 9PL, UK

Sinopsis

Governing bodies of professional motor races impose a great deal of restrictions on many aspects of the car. Success is therefore highly dependent upon the external performance of the vehicle i.e. how to generate the maximum amount of downforce with the smallest drag penalty possible. The external aerodynamics exhibit many complex flow features, including vortex shedding and strong separation, amongst others. Because of the time scales involved in this industry, RANS turbulence modelling is the only feasible approach. In the present contribution, a number of schemes are tested over a range of homogeneous flow cases, covering a variety of flows with shear, normal straining, rotation and unsteadiness, highlighting the weaknesses, strengths and potential strengths of the different model formulations.

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