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離心泵流場(chǎng)流固耦合數(shù)值模擬
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國(guó)家自然科學(xué)基金資助項(xiàng)目（51076126）


Numerical Calculation on Flow Field in Centrifugal Pump Based on Fluid-structure Interaction Theorem
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    摘要:

    離心泵葉輪在流場(chǎng)中受到的應(yīng)力及產(chǎn)生的變形對(duì)速度場(chǎng)和壓力場(chǎng)有一定的影響。采用雙向同步求解方法對(duì)離心泵流場(chǎng)和葉輪結(jié)構(gòu)響應(yīng)進(jìn)行聯(lián)合求解,，分析葉輪流固耦合作用對(duì)其內(nèi)部流場(chǎng)的影響,。對(duì)不同工況進(jìn)行的計(jì)算結(jié)果表明，葉輪和葉片中應(yīng)力分布明顯不均,，局部出現(xiàn)應(yīng)力集中,；葉輪出口后蓋板在偏離設(shè)計(jì)工況時(shí)變形較大，影響葉輪出口速度,，使蝸殼出現(xiàn)分流的部位向出口移動(dòng),；導(dǎo)致葉輪出口壓力不對(duì)稱狀態(tài)、不穩(wěn)定性更嚴(yán)重,；各監(jiān)測(cè)點(diǎn)上壓力變化較明顯,。

    Abstract:

    The stress and deformation of centrifugal pump impeller have certain impacts on the velocity and pressure fields. A solution for the flow field of centrifugal combined with structure response of impeller was implemented by using two-way coupling method to investigate the effect of FSI of impeller on flow field. By using this method, various flow rate conditions were calculated. The results showed that the stress of the impeller was markedly uneven and the local stress concentration appeared in each operation condition. The back cover board of impeller outlet had large deformation deviating from the design value, which affected the impeller velocity, made the shunt parts in the volute to move export, led to severe unsymmetry phenomena and instability of pressure in impeller outlet. Pressure of every monitoring point changed obviously.

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江偉,郭濤,李國(guó)君,劉三華.離心泵流場(chǎng)流固耦合數(shù)值模擬[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2012,43(9):53-56,42. Jiang Wei, Guo Tao, Li Guojun, Liu Sanhua. Numerical Calculation on Flow Field in Centrifugal Pump Based on Fluid-structure Interaction Theorem[J]. Transactions of the Chinese Society for Agricultural Machinery,2012,43(9):53-56,42.

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  • 在線發(fā)布日期: 2012-09-04
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