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为了揭示分流器位置及形状对进气粒子分离器(IPS)性能的影响,采用Realizable k-ε湍流模型对IPS进行了数值模拟,得到了分流器沿轴向移动及径向移动对IPS流场、分离效率、总压损失的影响,在此基础之上,研究了分流器唇口处与内壁面最高点轴向距离及径向距离的比值及分流器形状对IPS的影响,结果表明:比值较大时,随着轴向距离的增加,总压损失呈下降趋势,且下降梯度较大.当比值较小时,总压损失呈先减小后增加的趋势;与未改变分流器形状相比,分流器形状改变后总压损失有所降低,分离效率提高,并且分流器唇口处最高马赫数有所降低.
In order to reveal the influence of the position and shape of the splitter on the performance of the inlet particle separator (IPS), the Realizable k-ε turbulence model was used to simulate the IPS. The axial movement and radial movement of the splitter were obtained. , The separation efficiency and the total pressure loss. On this basis, the ratio of the axial distance and the radial distance of the highest point of the splitter lip to the inner wall surface and the shape of the splitter on the IPS were studied. The results showed that the ratio The larger the axial distance, the lower the total pressure loss and the larger the descending gradient is, and when the ratio is smaller, the total pressure loss first decreases and then increases. Compared with the unchanged shunt shape , The total pressure loss of the diverter has been reduced, the separation efficiency is improved, and the maximum mach number of the diverter lip is reduced.