중첩격자계에서 교차영역 구성에 따른 시간/공간 정확도에 관한 연구

Study of Spatial and Temporal Accuracy Estimation Related with Mesh Interafce Region on Overlapped Grids

The spatial error due to the non-conservative interpolation become first-order when second-order conservative schemes are used, discontinuities are located away from the overlapped regions, and if the length of the overlapped region is not proportional to the grid spacing. Therefore, the solution accuracy is ensured if two domains overlap each other with a fixed grid point and the interpolation is occurred in smooth flow regions. To validate the spatial and temporal accuracy due to the non-conservative interpolation, inviscid and viscous problems are tested.