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Development of a 3-D Unsteady Viscous Flow Solver on Deforming Unstructured Meshes  

Kim J. S. (한국과학기술원 항공우주학과)
Kwon O. J. (한국과학기술원 항공우주학과)
Publication Information
Journal of computational fluids engineering / v.9, no.2, 2004 , pp. 52-61 More about this Journal
Abstract
In the present study, a solution algorithm for the computation of unsteady flows on unstructured meshes is presented. Dual time stepping is incorporated to achieve the second-order temporal accuracy while reducing errors associated with linearization and factorization. This allows any time step size, which is suitable for considering physical phenomena of interest. The Gauss-Seidel scheme is used to solve the linear system of equations. A special treatment based on spring analogy is made to handle meshes with high aspect-ratio cells. The present method was validated by comparing the results with experimental data and those obtained from rigid motion.
Keywords
Unsteady Flow; Dual Time Stepping; Spring Analogy; Unstructured Mesh;
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