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효율적인 Patched-grid 알고리즘을 이용한 3차원 정렬격자 생성 개선
박현돈(H.D. Park),박수형(S.H. Park) 한국전산유체공학회 2019 한국전산유체공학회지 Vol.24 No.2
The Patched-grid algorithm code based on the time flux conservation approach has been developed to greatly reduce the number of grid points in the unnecessary region and overcome the difficulty of grid generation. For the 2-D analysis, a supersonic intake model with M = 2.41 is selected and a dense grid is efficiently generated in the flow separation area or the shock wave area. It is confirmed that the shock wave passes smoothly without discontinuous points at the interface where the grid points are mismatched. Also, it has been quantitatively proved that the fluxes at the mismatched interface are conserved even though the difference in the number of grid points between two adjacent blocks is significantly large. 3-D Patched-grid algorithm code is applied to the UCAV1303 configuration. The Patched-grid algorithm can greatly reduce the number of grid points at the far-field region while maintaining the density of grid points near the configuration.