On the Accuracy and Efficiency of Cell-centered and Vertex-centered Approaches for Unstructured Meshes

비정렬 격자계에서 셀 중심 및 버텍스 중심 계산방법에 따른 계산의 정확도와 효율에 관한 연구

The numerical simulations with unstructured mesh by cell-centered and vertex-centered approaches were performed for the quadrilateral and triangular meshes. For the 2-D incompressible supersonic vortex flow, the simulation results and the analytic solution were compared and the accuracy was assessed. The calculation efficiency was measured by the parameter defined by the consumed CPU time multiplied by absolute error, As a results, equilateral triangular mesh yielded the best accuracy and efficiency among the tested meshes.