摘要
液压元件集成化后，从流场分布的机理研究液压阀的节能显特别重要。通常情况下，液压阀流道的公称直径（６ｍｍ～２０ｍｍ）比较小，故采用传统的测量仪器不可能测量出流场的分布．本文利用激光多谱勒测速仪（ＬＤＡ）成功地解决了这个问题；另一方面，传统的研究方法只能研究总的能量损失，要从流场分布的机理研究流道内的能量损失，也是非常困难的．作者利用本文的Ｋ－ε紊流模型成功地解决了这个问题．从实验数据和数值模拟两个方面提出了优化流道的设计方案。在计算复杂流场时，作者提出了一种对复杂流场计算收敛性非常有效的线性分割迭加法（ＬＳＡ）。
It is very important to study the energy saving from the mechanism of the flow fields of the distribution,when the hydraulic components are integrated.In the ordinary condition, a conventional measurement equipments are not able to measure the flowfield's distribution,because the nominal diameters(6 mm～20 mm)of the flow pathof hydraulic components are very small.The authors have successfully solved the problem by using Laser Doppler Anemometry(LDA).On the other hand,it is very difficultto analyse theoretically it,the conventional method is only capable of studying the total ensrgy loss,alld can not analyse the flow fields distribution.Also it is reay difficult to study the flow field'S distribution mechanism of the flow path.The authors have alsosuccessfully solved the problem by using K--E turbulence'model.Finally an optimal design project of the flow path is proposed by the experimental data and theoretical analysis.In the paper,the authors have achieved a good method to simulate the complex flowfields which is called' Linear-Separation-Accumulation(L method.
关键词
液压集成块
流场分布
K-Ε紊流模型
液压阀
LDA
hydraulic integrated block,LDA,flow field's distribution,flow path,K-εturbulence model,LSA method
