Assessment of Reynolds Stress Turbulence Closures in the Calculation of a Transonic Separated Flow

• Published in: Journal of mechanical science and technology Vol. 15; no. 7; pp. 889 - 894
• Main Authors: KIM, Kwang-Yong, SON, Jong-Woo, CHO, Chang-Ho
• Format: Journal Article
• Language: English
• Published: Seoul 대한기계학회 01.07.2001; Korean Society of Mechanical Engineers; Springer Nature B.V
• Subjects: Aerodynamics; Closures; Compressible flows; shock and detonation phenomena; Computational fluid dynamics; Computational methods in fluid dynamics; Exact sciences and technology; Fluid dynamics; Fluid flow; Fundamental areas of phenomenology (including applications); Mathematical models; Physics; Reynolds stress; Shock-wave interactions and shock effects; Shock-wave interactions and shockeffects; Stresses; Studies; Turbulence; Turbulent flow; Shock waves; Transonic flow; Obstacle; Flow separation; Aerodynamics; Modelling; Separated flow; Reynolds equation; Axial symmetry; Boundary layers; Navier-Stokes equations
• ISSN: 1226-4865; 1738-494X; 1976-3824
• DOI: 10.1007/BF03185267

In this study, the performances of various turbulence closure models are evaluated in the calculation of a transonic flow over axisymmetric bump. k-ε, explicit algebraic stress, and two Reynolds stress models, i. e., GL model proposed by Gibson & Launder and SSG model proposed by Speziale, Sarkar and Gatski, are chosen as turbulence closure models. SSG Reynolds stress model gives best predictions for pressure coefficients and the location of shock. The results with GL model also show quite accurate prediction of pressure coefficients downstream of shock wave. However, in the predictions of mean velocities and turbulent stresses, the results are not so satisfactory as in the prediction of pressure coefficients.[PUBLICATION ABSTRACT]