To read this content please select one of the options below:

Computations of viscous flows using a multigrid finite volume lambda formulation

Francesco Casalini (Istituto di Macchine ed Energetica, Politecnico di Bari, Italy)
Andrea Dadone (Istituto di Macchine ed Energetica, Politecnico di Bari, Italy)

Engineering Computations

ISSN: 0264-4401

Article publication date: 1 November 1999

805

Abstract

The viscous finite volume lambda formulation is presented. The suggested technique is apt to compute viscous flows with heat fluxes. The inviscid terms are evaluated by means of the non‐conservative, very accurate upwind methodology, known as the finite volume lambda formulation. The diffusive terms, on the contrary, are approximated by a central scheme. Both methods are characterized by a nominal second order accuracy in space. Efficiency is enhanced by means of a multigrid technique which directly combines each grid level with each stage of an explicit multistage time integration technique. A laminar viscous flow about a NACA 0012 airfoil and a turbulent one about a RAE 2822 airfoil have been computed as well as the two‐ and three‐dimensional turbulent flows inside the Stanitz elbow. The computed numerical results are in very good agreement with well assessed published numerical or experimental results. The suggested multigrid technique allows significant work reductions for laminar as well as for turbulent flow computations.

Keywords

Citation

Casalini, F. and Dadone, A. (1999), "Computations of viscous flows using a multigrid finite volume lambda formulation", Engineering Computations, Vol. 16 No. 7, pp. 767-786. https://doi.org/10.1108/02644409910298110

Publisher

:

MCB UP Ltd

Copyright © 1999, MCB UP Limited

Related articles