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http://dx.doi.org/10.5139/JKSAS.2007.35.3.183

Migration from Compressible Code to Preconditioned Code  

Han, Sang-Hoon (부산대학교 대학원 항공우주공학과)
Kim, Myeong-Ho (국방과학연구소)
Choi, Jeong-Yeol (부산대학교 항공우주공학과)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.35, no.3, 2007 , pp. 183-195 More about this Journal
Abstract
Comprehensive mathematical comparison of numerical dissipation vector was made for a compressible and the preconditioned version Roe's Riemann solvers. Choi and Merkle type preconditioning method was selected from the investigation of the convergence characteristics of the various preconditioning methods for the flows over a two-dimensional bump. The investigation suggests a way of migration from a compressible code to a preconditioning code with a minor changes in Eigenvalues while maintaining the same code structure. Von Neumann stability condition and viscous Jacobian were considered additionally to improve the stability and accuracy for the viscous flow analysis. The developed code was validated through the applications to the standard validation problems.
Keywords
Preconditioning; Roe's approximate Riemann solver; Code migration;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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