自由液面附近的二维水翼空化流场分析 (陈建宏; 吴炳承)

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%i-i]jx#}!I2D0自由液面附近的二维水翼空化流场分析水利论文&R:F#h%V$e|@

s+CbM ?r6lh0【作者】陈建宏; 吴炳承 【作者单位】台湾海洋大学水利论文3T,~,Yksy

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t!e;@~c@2W R1C0【论文摘要】 本研究提出一套数值迭代计算程序,以二相流的解析精神,探讨自由液面附近的空化水翼流场.在每一轮的迭代中,我们分别更新自由液面与水翼空化空泡的表面形状,其中自由液面的计算系采用 VOF 法,而空化空泡的计算则采完全空化模型,其中液气相可进行交换。我们提出计算例,证明此套程序的可行性,并发现通常可在5轮的迭代之后,得到收敛的数值计算结果;而相关结果亦显示,在会有一低速区接续在"完全空化区"之后出现.水利论文@ k1[k*a fmx

[;YTr^$oD5J"Dlb0【英文论文摘要】 We proposed an iterative procedure to study the viscous flow past a cavitating hydrofoil near the free surface.In each iteration,the free surface and the cavity surface are updated iteratively. Furthermore,the VOF method and full cavitation model were employed to capture the free surface and cavitation phenomena,respectively.The k-ε model was used for turbulence.A test case was conducted to illustrate the capability of the present procedure.The convergent solution was obtained in five iterations.Some interesting flow phenomena were also observed and discussed.

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【论文关键词】 自由液面; 空化; 二维水翼; 黏性流水利论文s:GB{$hGN u
【英文论文关键词】 free surface; cavitation; viscous effect; 2-D hydrofoil水利论文3mA1M#OL@
【基金】台湾国科会(NSC 95-2221-E-019-090)的赞助.

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TAG: 流场 水翼 自由液面 陈建宏 吴炳承
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