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An Optimized Correction Procedure via Reconstruction Formulation for Broadband Wave Computation

Published online by Cambridge University Press:  03 June 2015

Yi Li*
Affiliation:
Department of Aerospace Engineering and CFD Center, Iowa State University, Ames, IA 50011, USA
Z.J. Wang*
Affiliation:
Department of Aerospace Engineering and CFD Center, Iowa State University, Ames, IA 50011, USA
*
Corresponding author.Email:yili@iastate.edu
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Abstract

Recently, a new differential discontinuous formulation for conservation laws named the Correction Procedure via Reconstruction (CPR) is developed, which is in-spired by several other discontinuous methods such as the discontinuous Galerkin (DG), the spectral volume (SV)/spectral difference (SD) methods. All of them can be unified under the CPR formulation, which is relatively simple to implement due to its finite-difference-like framework. In this paper, a different discontinuous solution space including both polynomial and Fourier basis functions on each element is employed to compute broad-band waves. Free-parameters introduced in the Fourier bases are optimized to minimize both dispersion and dissipation errors through a wave propagation analysis. The optimization procedure is verified with a mesh resolution analysis. Numerical results are presented to demonstrate the performance of the optimized CPR formulation.

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Type
Research Article
Copyright
Copyright © Global Science Press Limited 2013

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