A solution-adaptive local refinement multigrid strategy previously developed for a simple-wave model of the Euler equations has been extended to two newly developed higher-order-accurate characteristic decomposition methods for the solution of steady inviscid compressible flows. Numerical results show that the new methodology provides a significant accuracy improvement with respect to the simple-wave approach, at the expense of a reduced multigrid convergence rate. With its second-order spatial accuracy and very low entropy generation, the new method appears to be well suited for computing viscous flows.

A Higher-order multidimensional upwind solution-adaptive multigrid solver for compressible flows

Catalano LA;De Palma P;Pascazio G;Napolitano M
1995

Abstract

A solution-adaptive local refinement multigrid strategy previously developed for a simple-wave model of the Euler equations has been extended to two newly developed higher-order-accurate characteristic decomposition methods for the solution of steady inviscid compressible flows. Numerical results show that the new methodology provides a significant accuracy improvement with respect to the simple-wave approach, at the expense of a reduced multigrid convergence rate. With its second-order spatial accuracy and very low entropy generation, the new method appears to be well suited for computing viscous flows.
14th International Conference on Numerical Methods in Fluid Dynamics
3-540-59280-6
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11589/18021
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