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.
|Autori interni:||NAPOLITANO, Michele|
|Titolo:||Higher-order multidimensional upwind solution-adaptive multigrid solver for compressible flows|
|Data di pubblicazione:||1995|
|Nome del convegno:||14th International Conference on Numerical Methods in Fluid Dynamics;|
|Appare nelle tipologie:||4.1 Contributo in Atti di convegno|