한국주조공학회지 (Journal of Korea Foundry Society)

  • 제29권1호
  • /
  • Pages.33-37
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  • 2009
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  • 1598-706X(pISSN)
  • /
  • 2288-8381(eISSN)
한국주조공학회 (Korea Foundry Society)
권호 표지

직교 격자 계에서 주조 유동 시뮬레이션의 정확한 해석 방법

Mold Filling Simulation with Cut Cell in the Cartesian Grid System

  • 최영심 (한국생산기술연구원, 사이버설계지원 센터) ;
  • 남정호 (한국생산기술연구원, 사이버설계지원 센터) ;
  • 홍준호 (한국생산기술연구원, 사이버설계지원 센터) ;
  • 황호영 (한국생산기술연구원, 사이버설계지원 센터)
  • Choi, Young-Sim (Korea Institute of Industrial Technology, Center for e-Design) ;
  • Nam, Jeong-Ho (Korea Institute of Industrial Technology, Center for e-Design) ;
  • Hong, Jun-Ho (Korea Institute of Industrial Technology, Center for e-Design) ;
  • Hwang, Ho-Young (Korea Institute of Industrial Technology, Center for e-Design)
  • 발행 : 2009.02.20
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초록

Cartesian grid system has mainly been used in the casting simulation even though it does not nicely represent sloped and curved surfaces. These distorted boundaries cause several problems. A special treatment is necessary to clear these problems. In this paper, we propose a new method that can consider the cutting cells which are cut by casting and mold based on the partial cell treatment (PCT). This method provides a better representation of geometry surface and will be used in the computation of velocities that are defined on the cell boundaries in the Cartesian grid system. Various test examples for several casting process were computed and validated. The analysis results of more accurate fluid flow pattern and less momentum loss owing to the stepped boundaries in the Cartesian grid system were confirmed. By using the cut cell method, performance of computation gets better because of reducing the whole number of meshes.

키워드

참고문헌

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