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Application of streamwise diffusion to time-dependent free convection of liquid metals

✍ Scribed by Matthew A. McClelland

Publisher
John Wiley and Sons
Year
1994
Tongue
English
Weight
617 KB
Volume
18
Category
Article
ISSN
0271-2091

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✦ Synopsis

Abstract

A numerical analysis is given for the application of streamwise diffusion to high‐intensity flows with marginal spatial resolution. Terms are added to the momentum equation which are similar to those used in the Petrov‐Galerkin, Taylor‐Galerkin and balancing tensor diffusivity methods. Values for the streamwise viscosity are obtained from mesh refinement studies. An illustration is given for the time‐dependent free convection of a liquid metal in a cavity with differentially heated sided walls. The spatial problem is solved with the Galerkin finite element method and the time integration is performed with the backward Euler method. Solution quality and computation time are compared for results with and without added streamwise diffusion. For the cases presented, streamwise diffusion eliminates spurious oscillations and saves computation time without compromising the solution.

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