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雙方程湍流模型在高雷諾數(shù)水翼繞流模擬中應(yīng)用
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    摘要:

    為了研究不同湍流模型在水翼繞流數(shù)值模擬中的適用性,，采用3種雙方程湍流模型,，對某二維水翼在高雷諾數(shù)（Re＝7.0×105）下的無空化繞流進行了定常數(shù)值模擬,。分析比較了標準k-ε模,、RGN k-ε模型以及Realizable k-ε模型結(jié)合不同近壁區(qū)處理方式所得模擬結(jié)果的差異,。通過SIMPLEC算法實現(xiàn)速度,、壓力的分離求解,，離散差分格式具有二階精度,。結(jié)果表明,，Realizable k-ε 湍流模型結(jié)合增強型壁面函數(shù)法所得翼型繞流速度分布與實測值最為接近,。

    Abstract:

    An evaluation of the capability of turbulence models for their application to hydrofoil steady flow at high Reynolds numbers was presented. Three widely applied two-equation RANS turbulence models were assessed by means of comparison with experimental data at Reynolds numbers of 7.0×105. They were the standard k-ε model, the RNG k-ε model and the realizable k-ε model. The SIMPLEC algorithm was applied for the solution of the governing equations. It has been found that the realizable k-ε turbulence model used with enhanced wall functions and near-wall modeling techniques consistently provided superior performance in predicting the flow characteristics around the hydrofoil. 

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黎耀軍,王福軍.雙方程湍流模型在高雷諾數(shù)水翼繞流模擬中應(yīng)用[J].農(nóng)業(yè)機械學報,2007,38(12):45-48.[J]. Transactions of the Chinese Society for Agricultural Machinery,2007,38(12):45-48.

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