Implementation and comparisons of parallel implicit solvers for hypersonic flow computations on unstructured meshes

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Scopus citations

Abstract

A study of parallel implicit solvers for accelerating convergence to steady state solutions of the compressible Navier-Stokes equations with finite-rate chemistry is presented. The solvers in question are pertinent to applications of hypersonic flows that can be modeled as laminar, or to turbulent flows that can be simulated using the Reynolds averaged (RANS) equations. The current state-of-the-art method, the Data-Parallel Line Relaxation (DPLR), is examined. Its convergence properties are evaluated for a class of challenging external aerodynamics problems. A more sophisticated method based on the GMRES linear system solver is built around the DPLR method, where the DPLR is used as a preconditioner. The convergence characteristics of the augmented method are studied for model problems of practical interest. Results show that the more sophisticated method has better convergence properties, but exhibits higher cost and should be used selectively.

Original languageEnglish (US)
Title of host publication20th AIAA Computational Fluid Dynamics Conference 2011
StatePublished - Dec 1 2011
Event20th AIAA Computational Fluid Dynamics Conference 2011 - Honolulu, HI, United States
Duration: Jun 27 2011Jun 30 2011

Publication series

Name20th AIAA Computational Fluid Dynamics Conference 2011

Other

Other20th AIAA Computational Fluid Dynamics Conference 2011
CountryUnited States
CityHonolulu, HI
Period6/27/116/30/11

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