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ON THE CALCULATION OF SYMMETRIC WAKES I. TWO-DIMENSIONAL FLOWS

 

作者: Tuncer Cebeci,   F. Thiele,   P. G. Williams,   Keith Stewartson,  

 

期刊: Numerical Heat Transfer  (Taylor Available online 1979)
卷期: Volume 2, issue 1  

页码: 35-60

 

ISSN:0149-5720

 

年代: 1979

 

DOI:10.1080/10407787908913398

 

出版商: Taylor & Francis Group

 

数据来源: Taylor

 

摘要:

A numerical method is presented for calculating the symmetric wakes of two-dimensional bodies for incompressible laminar and turbulent flows. The appropriate thin shear layer equations are solved by using Keller's two-point finite-difference method. To account for the inner shear layer generated by the change of boundary conditions from no slip on the body to smooth flow on the axis of symmetry, a double-structured numerical scheme is used at the trailing edge. The Reynolds shear stress term is modeled by a modified version of the algebraic eddy viscosity approach of Cebeci and Smith. A comparison of centerline velocities for laminar wake flows with zero pressure gradient indicates excellent agreement with those given by Goldstein. In addition, several laminar temperature profiles past a flat plate are computed for several Prandtl numbers. Similar calculations for turbulent wake flows also indicate excellent agreement with the experimental data of Chevray and Kovasznay and show that the centerline velocities as well as the velocity profiles across the layer can be computed satisfactorily with the present method. Finally, a set of wake calculations is presented for flows with pressure gradient.

 

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