AN IMPROVED INTERPOLATION SCHEME FOR FINITE VOLUME SIMULATIONS ON UNSTRUCTURED MESHES
Samuel KM Chenoweth, Julio Soria, Andrew Ooi
Mathematics of Computation | AMER MATHEMATICAL SOC | Published : 2013
The unstructured bilinear interpolation scheme of Kim and Choi (2000) is claimed to be second order accurate on the basis of empirical results from finite volume simulations of the incompressible Navier-Stokes equations. In this paper, the scheme is analysed theoretically, and is shown to be only first order accurate for function interpolation and zeroth order accurate for spatial derivative approximation, in the general case. A number of special cases exist, however, where higher order accuracy may be obtained, and these are identified in this paper. Since the mesh used by Kim and Choi to demonstrate the accuracy of their scheme was one of these special cases, this explains their results. F..View full abstract
Awarded by Australian Research Council
The authors would like to acknowledge the support of the Australian Research Council for this research through grant DP0556098.