한국전산유체공학회지 (Journal of computational fluids engineering)

한국전산유체공학회 (Korean Society of Computational Fluids Engineering)
권호 표지

비정렬 혼합 격자계에서 신속 격자 변형 기법을 이용한 비정상 점성 유동 해석

NUMERICAL ANALYSIS OF UNSTEADY VISCOUS FLOWS USING A FAST GRID DEFORMATION TECHNIQUE ON HYBRID UNSTRUCTURED MESHES

  • 이희동 (한국과학기술원 대학원 항공우주공학과) ;
  • 정문승 (한국과학기술원 대학원 항공우주공학과) ;
  • 권오준 (한국과학기술원 항공우주공학과)
  • 발행 : 2009.09.30
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초록

In the present study, a fast grid deformation technique has been incorporated into the unsteady compressible and incompressible viscous flow solvers on unstructured hybrid meshes. An algebraic method based on the basis decomposition of normal edge vector was used for the deformation of viscous elements, and a ball-vertex spring analogy was adopted for inviscid elements among several spring analogy methods due to its robustness. The present method was validated by comparing the results obtained from the grid deformation and the rigid motion of entire grids. Fish swimming motion of an NACA0012 airfoil and flapping wing motion of a generic fighter were also simulated to demonstrate the robustness of the present grid deformation technique.

키워드

참고문헌

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