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An eddy-viscosity limited algebraic stress model for shock-boundary-layer interaction

Published online by Cambridge University Press:  04 July 2016

G. Richardson  and
N. Qin
G. Richardson
Affiliation:
Centre for Computational Aerodynamics, College of Aeronautics, Cranfield University, Bedford, UK
N. Qin
Affiliation:
Centre for Computational Aerodynamics, College of Aeronautics, Cranfield University, Bedford, UK
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Abstract

This paper presents a μt-limited explicit algebraic stress model for shock-wave-turbulent boundary-layer interactions based on an investigation of various two-equation turbulence models. The results of the κ-ω model, the shear stress transport (SST) model, and a quadratic explicit algebraic stress model are presented and analysed for the Delery channel bump, and the Bachalo and Johnson axisym-metric bump test cases. While the κ-ω model failed to give good predictions, the SST model proved reasonably successful in predicting strong interaction problems. The non-linear quadratic explicit algebraic stress model gave improved results (when compared with the original κ-ω model) for the channel bump test cases, but was not as good as the SST model. Inspired by this investigation, a model formulation is proposed in which Bradshaw's assumption for eddy-viscosity limiting (as used in the SST model) is applied to a quadratic explicit algebraic stress model. The QSST model further improves the SST model for strong shock-boundary-layer interactions.

Type
Research Article
Information
The Aeronautical Journal , Volume 105 , Issue 1045 , March 2001 , pp. 105 - 118
Copyright
Copyright © Royal Aeronautical Society 2001 

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