F212 DEVELOPMENT OF A NEAR-WALL TURBULENCE MODEL AND APPLICATION TO JET IMPINGEMENT HEAT TRANSFER(Turbulence modeling)
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概要
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A near-wall turbulence model was developed and applied to heat and fluid flow for an an impinging jet flow. The k-ε-f_μ model was modified for predictions in strongly strained turbulent flows. To derive a realizable eddy viscosity, the f_<μ2> function was newly formulated. The near-wall effect and the anisotropic production were reflected in the ε-equation. The model performance was validated by the relevant experimental data. The predicted results were compared with those by the k-ε model and by the k-ε-v^2 model. The application to jet impingement heat transfer revealed that the present numerical predictions of wall heat transfer show good agreement with the experimental data in the stagnation region. The influence of the Reynolds number on the stagnation Nusselt number was investigated. The agreement between computation and experiment was satisfactory.
- 一般社団法人日本機械学会の論文
- 2000-10-01
著者
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SUNG Hyung
Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology
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Park Tae
Space Propulsion System Department Space Technology Research And Development Division Korea Aerospac
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Sung Hyung
Department Of Mechanical Engineering Korea Advanced Institute Of Science And Technology
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Park Tae
Space Propulsion Department Aerospace R & D Division Korea Aerospace Research Institute
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