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. - STAMPA. - 453:(1995), pp. 241-245. (Intervento presentato al convegno 14th International Conference on Numerical Methods in Fluid Dynamics tenutosi a Bangalore, India nel July 11-15, 1994) [10.1007/3-540-59280-6_129].
A Higher-order multidimensional upwind solution-adaptive multigrid solver for compressible flows
Catalano LA;De Palma P;Pascazio G;Napolitano M
1995-01-01
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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
