Study on the Flow Fields of Irregular-Shaped Domains by an Algebraic Grid-Generation Technique

• CHIU Cheng Ping

• WU Tser Son

  Department of Mechanical Engineering, National Cheng Kung University

抄録

A finite-difference solution algorithm is developed to solve the Navier-Stokes equations in a nonorthogonal curvilinear coordinate system. The governing equations are written in the strong-conservative-law form. A rectangular computational domain is yielded by Moretti's transformation. The tasks of numerically generating the body-fitted coordinate by partial differential equations are avoided. Hence the matrix of the transformation can be determined by direct analytic differentiation. The discretized conservation equations are derived on a control volume basis and solved by the extended SIMPLE calculation procedure. Numerical results obtained by employing the present methodology will be compared with results from analytical solutions. The relative merits of three numerical representations, i.e., power-law, hybrid, and first-order upwind, for approximating the convection terms in the momentum equations are compared. The results show that the numerical results exhibited excellent agreement with the available analytical solution.

収録刊行物

• JSME international journal. Ser. 2, Fluids engineering, heat transfer, power, combustion, thermophysical properties

  JSME international journal. Ser. 2, Fluids engineering, heat transfer, power, combustion, thermophysical properties 34 (1), 69-77, 1991-02-15

  一般社団法人日本機械学会

キーワード

• Nonorthogonal Curvilinear Coordinate
• Rectangular Computational Domain
• Analytical Solution

詳細情報

• CRID: 1571135652153712640
• NII論文ID: 110002493344
• NII書誌ID: AA10680596
• ISSN: 09148817
• 本文言語コード: en
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