A Multi-Dimensional Virtual Characteristic Scheme for Laminar and Turbulent Incompressible Flows

Journal of Applied Fluid Mechanics

S. E. Razavi¹  Masoud Hanifi² 

[1] Department of Mechanical Engineering, University of Tabriz, Tabriz, Iran;University of Tabriz;

关键词: Navier-Stokes equations;    Reynolds averaging;    Spalart-Allmaras model;    multi-dimensional characteristics;    artificial compressibility;    Finite volume method.;   

DOI  :  

来源: DOAJ

【 摘 要 】

A multi-dimensional virtual characteristic-based scheme (MVCB) by the aid of artificial compressibility is developed for convective fluxes in laminar and turbulent incompressible flows. The proper combinations of compatibility equations are determined to obtain primitive variables on cell interfaces. The Reynolds averaged Navier-Stokes equations joined with Spalart-Allmaras turbulent model are solved by finite volumes. This scheme is applied to the flows between parallel plates, over backward-facing step, and in square lid-driven cavity at a wide range of Reynolds numbers. A FORTRAN 90 code has been written and all the results have come out from this code. Several comparisons confirm the scheme ability in accurate simulation of flows without need to any artificial viscosity in laminar and turbulent regimes.

【 授权许可】

Unknown