Journal of computational fluids engineering (한국전산유체공학회지)

Korean Society of Computational Fluids Engineering (한국전산유체공학회)
권호 표지

A NEW NUMERICAL APPROXIMATION OF DIFFUSION FLUX IN UNSTRUCTURED CELL-CENTERED METHOD

비정렬 셀 중심 방법에서 확산플럭스의 새로운 수치근사방법

  • 명현국 (국민대학교 기계자동차공학부)
  • Published : 2006.03.01
Download PDF
⟨ Previous Next ⟩

Abstract

The existing approximations of diffusion flux in unstructured cell-centered finite volume methods are examined in detail with each other and clarified to have indefinite expressions in several respects. A new numerical approximation of diffusion flux at cell face center is then proposed, which is second-order accurate even on irregular grids and may be easily implemented in CFD code using cell-centered finite volume method with unstructured grids composed of arbitrary convex polyhedral shape.

Keywords

References

  1. Demirdzic, I. and Muzaferija, S., 1995, 'Nwnerical Method for Coupled Fluid Flow, Heat Transfer and Stress Analysis using Unstructured Moving Meshes with Cells of Arbitrary Topology,' Comput. Methods Appl. Mech Engrg., Vol.125, p.235-255 https://doi.org/10.1016/0045-7825(95)00800-G
  2. Ferziger, J.H. and Peric, M., 2002, Computational Methods for Fluid Dynamics, 3rd ed., Springer
  3. Muzaferija, S., 1994, 'Adaptive Finite Volwne Method for Flow Predictions using Unstructured Meshes and Multigrid Approach,' PhD Thesis, University of London
  4. Mathur, S.R. and Murthy, J.Y., 1997, 'A Pressure-Based Method for Unstructured Meshes,' Numerical Heat Transfer, Part B, Vol.31, p.195-215 https://doi.org/10.1080/10407799708915105
  5. Zwart, P.J., Raithby, G.D. and Raw, M.J., 1999, 'The Integrated Space-Time Finite Volwne Method and its Application to Moving Boundary Problems,' J. Comp. Physics, Vol.154 p.497-519 https://doi.org/10.1006/jcph.1999.6324
  6. Davidson, L., 1996, 'A Pressure Correction Method for Unstructured Meshes with Arbitrary Control Volwnes,' Int. J. Numer. Methods Fluids, Vol.22, p.265-281 https://doi.org/10.1002/(SICI)1097-0363(19960229)22:4<265::AID-FLD359>3.0.CO;2-J
  7. 명현국, 2005, '정사각 캐비티내 고레이놀즈수 Lid-Driven 유동의 수치해석', 한국전산유체공학회지, 제10권, 제4호 p.18-23
  8. 명현국, 전태현, 2005, '열전도 물체가 존재하는 캐비티내 자연대류 열전달에 대한 수치적 연구', 한국전산유체공학회지, 제10권, 제3호 p.36-42
  9. Demirdzic, I., Lilek, Z. and Peric, M., 1992, 'Fluid Flow and Heat Transfer Test Problems for Non-Orthogonal Grids: Bench-Mark Solutions,' Int. J. Numer. Methods Fluids, Vol.15, p.329-354 https://doi.org/10.1002/fld.1650150306
  10. 명현국, 김종태, 김종은, 2005, '비정렬격자계를 사용하는 3차원 유동해석코드 개발 (II) -코드성능평가,' 대한기계학회논문집 B 권, 제29권, 제9호, p.1057-1064