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追蹤不可壓縮兩相流相界面的CLSVOF方法
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國(guó)家自然科學(xué)基金資助項(xiàng)目(50876007)和北京市自然科學(xué)基金資助項(xiàng)目(3102024)


Computation of Incompressible Two-phase Flows by Using CLSVOF Method
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    摘要:

    根據(jù)CLSVOF方法的基本思想，將VOF和Level Set兩種方法結(jié)合起來(lái)，用于追蹤不可壓縮兩相流相界面的計(jì)算。通過(guò)對(duì)經(jīng)典的兩相流流動(dòng)問(wèn)題的計(jì)算，研究了CLSVOF方法對(duì)對(duì)流輸運(yùn)方程和動(dòng)量輸運(yùn)方程計(jì)算精度的影響，并與VOF方法和Level Set方法進(jìn)行了對(duì)比。研究結(jié)果表明：求解對(duì)流輸運(yùn)方程時(shí)，CLSVOF方法的計(jì)算精度明顯高于Level Set方法；求解動(dòng)量輸運(yùn)方程時(shí)，CLSVOF方法產(chǎn)生的虛假速度接近于0，基本克服了利用VOF方法求解動(dòng)量輸運(yùn)方程時(shí)的虛假速度勢(shì)問(wèn)題。

    Abstract:

    The CLSVOF method which combined the VOF method and Level Set method was put forward to compute the flow of incompressible two-phase. The precision of the CLSVOF method for computing the convection transport and momentum transport equation was studied and the comparison was made between the VOF method and Level Set method by using some classical two-phase flows. The results show when computing the convection transport equation, the CLSVOF method has much better precision than the Level Set method; and when computing the momentum transport equation, the CLSVOF method can avoid the problem of spurious velocity current which can not be avoided by using the VOF method.

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宋云超,王春海,寧智.追蹤不可壓縮兩相流相界面的CLSVOF方法[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2011,42(7):26-31,60. Song Yunchao, Wang Chunhai, Ning Zhi. Computation of Incompressible Two-phase Flows by Using CLSVOF Method[J]. Transactions of the Chinese Society for Agricultural Machinery,2011,42(7):26-31,60.

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