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Turbulence and Shear Flow Phenomena -1 First International Symposium

ISBN Druckformat: 1-56700-135-1

REYNOLDS-STRESS MODELING OF AFTERBODY FLOWS

Abstrakt

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.
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