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基于CFD的調(diào)速型液力偶合器設(shè)計(jì)方法
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of Variable Speed Hydrodynamic Coupling Based on CFD
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    摘要:

    提出基于UG和CFD的調(diào)速型液力偶合器參數(shù)化設(shè)計(jì)和優(yōu)化設(shè)計(jì)方法。建立了調(diào)速型液力偶合器參數(shù)化模型和優(yōu)化設(shè)計(jì)流程?；诹鲌?chǎng)數(shù)值解與實(shí)驗(yàn)結(jié)果的原始特性曲線吻合較好，故CFD可用于復(fù)雜的液力偶合器氣液兩相流動(dòng)計(jì)算。針對(duì)3個(gè)不同的參數(shù)方案，對(duì)制動(dòng)工況、牽引工況和額定工況進(jìn)行流場(chǎng)數(shù)值計(jì)算及原始特性預(yù)測(cè)，并與基型偶合器對(duì)比，得到方案2的流動(dòng)分布較合理，壓力差與速度差較小，泵輪轉(zhuǎn)矩系數(shù)較大，為基型偶合器的合理優(yōu)化方案。

    Abstract:

    The parametric design and optimum design method of variable speed hydrodynamic coupling based on UG and CFD was proposed. The parametric model and optimum design flow of variable speed hydrodynamic coupling were established. The original characteristic curve based on flow-field numerical solution matched with the experiment result well, so CFD could be used for the complex gas-liquid two-phase flow of hydrodynamic coupling. Numerical simulation and performance prediction were conducted respectively to three different parametric schemes under brake condition, traction condition and rated condition, and compared with the base-type coupling. The second scheme had a more reasonable flow distribution, its pressure and velocity difference was smaller, pump torque coefficient was larger, and was the reasonable optimization scheme of base-type coupling.

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何延?xùn)|,馬文星,鄧洪超,劉剛.基于CFD的調(diào)速型液力偶合器設(shè)計(jì)方法[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2010,41(6):31-36. of Variable Speed Hydrodynamic Coupling Based on CFD[J]. Transactions of the Chinese Society for Agricultural Machinery,2010,41(6):31-36.

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