클리핑방법을 이용한 non-conformal interface 경계를 갖는 열전도 해석

다국어 초록 (Multilingual Abstract)

In CFD(Computational Fluid Dynamics) or heat transfer problem using an unstructured grid, it is possible to divide a complex domain into several simple domains. However, the grid points on the interface between two domains are not matched completely so called non-conformal mesh. Thus, mesh handling technique is needed to deal with this problem. Especially, a similar problem occurs in multi-phase or multi-material system. Since fluxes are calculated two neighbor cells sharing a surface in a finite volume method, it is difficult to calculate the proper flux. In order to overcome the problem, we employed the clipping method that calculates the connectivity and geometrical informations between non-conformal cells on the interface. The clipping method is generally used for comptuer graphics and searches the shape information of the overlapped polygons. In this study, we implemented the clipping algorithm that calculates the area and center of overlapped polygons. To validate the clipping method, the 3-dimensional heat conduction with a non-conformal interface was performed and then, it represented the reasonable solutions.

목차 (Table of Contents)

• Abstract
• 1. 서론
• 2. Clipping(클리핑)
• 3. 유한체적법(FVM)
• 4. 결론
• 참고문헌