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ISSN オンライン: 2642-0554

REYNOLDS-STRESS MODELING OF AFTERBODY FLOWS

Paul Batten
Metacomp Technologies Inc, 650 Hampshire Rd #200, Westlake Village, CA 91361, USA

Michael A. Leschziner
Aeronautics Department, Imperial College London, Prince Consort Rd., London SW7 2AZ, United Kingdom

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

要約

Several afterbody flows involving shock/boundary-layer interaction, and representative of conditions at the rear of high-speed aircraft, are used to evaluate a new form of a realizable low-Reynolds-number second-moment turbulence closure. The model considered is a variant of the closure of Craft and Launder (1996), which includes a tensorially cubic model for the pressure-strain, øij, and which is directly applicable to low-Reynolds number flows without the use of surface-topography parameters, such as wall-normal distance. New features associated with the extension of the model to compressible flow are outlined, and improved predictions are reported for several applications, relative to results arising from low-Reynolds-number k-ε and 'linear' variants of second-moment-closure.