Author: Thomas B. GatskiPublisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Assessment and Application of Reynolds Stress Closure Models to High-speed Compressible Flows
Author: Thomas B. GatskiDevelopment of a Near-wall Reynolds-stress Closure Based on the SSG Model for the Pressure Strain
Author: R. M. C. SoNumerical Prediction of Turbulent Compressible Flows Using K-e Model and Reynolds Stress Closure Model
Author: N. T. H. Nguyen-BuiProgress in Favre-Reynolds Stress Closures for Compressible Flows
Author: Virgil AdumitroaiePublisher:
ISBN:
Category :
Languages : en
Pages : 48
Book Description
A closure for the compressible portion of the pressure strain covariance is developed. It is shown that, within the context of a pressure strain closure assumption linear in the Reynolds stresses, an expression for the pressure dilatation can be used to construct a representation for the pressure strain. Additional closures for the unclosed terms in the Favre Reynolds stress equations involving the mean acceleration are also constructed. The closures accommodate compressibility corrections depending on the magnitude of the turbulent Mach number, the mean density gradient, the mean pressure gradient, the mean dilatation, and, of course, the mean velocity gradients. The effects of the compressibility corrections are consistent with current DNS results. Using the compressible pressure strain and mean acceleration closures in the Favre Reynolds stress equations an algebraic closure for the Favre Reynolds stresses is constructed. Noteworthy is the fact that, in the absence of mean velocity gradients, the mean density gradient produces Favre Reynolds stresses in accelerating mean flows. Computations of the mixing layer using the compressible closures developed are described. Favre Reynolds stress closure and two equation algebraic models are compared to laboratory data. The mixing layer configuration computations are compared to laboratory data; since the laboratory data for the turbulence stresses is inconsistent, this comparison is inconclusive. Comparisons for the spread rate reduction indicate a sizable decrease in the mixing layer growth rate.
Scientific and Technical Aerospace Reports
Author: Compressibility, Turbulence and High Speed Flow
Author: Thomas B. GatskiPublisher: Elsevier
ISBN:
Category : Science
Languages : en
Pages : 310
Book Description
complimentary treatment of both the theoretical foundations and the measurement and analysis tools currently used." --Book Jacket.
Modelling Turbulence in Engineering and the Environment
Author: Kemal HanjalićPublisher: Cambridge University Press
ISBN: 0521845750
Category : Science
Languages : en
Pages : 403
Book Description
A comprehensive account of advanced RANS turbulence models including numerous applications to complex flows in engineering and the environment.
Evaluation of Reynolds Stress Turbulence Closures in Compressible Homogeneous Shear Flow
Author: Institute for Computer Applications in Science and EngineeringPublisher:
ISBN:
Category :
Languages : en
Pages : 36
Book Description
Evaluation of Algebraic Reynolds Stress Models for Separated High-speed Flows
Author: Donald P. RizzettaSystematic Study of Reynolds Stress Closure Models in the Computations of Plane Channel Flows
Author: Institute for Computer Applications in Science and EngineeringPublisher:
ISBN:
Category :
Languages : en
Pages : 36
Book Description