为优化液压集成块流道工艺参数,在单因素分析基础上,选择流道交连形式、直径、刀尖角伸出比为自变量,以总压损失系数为响应值,运用Box-Benhnken Design(BBD)法设计了3因素3水平响应面设计试验.以ANSYS FLUENT12.0软件为工具对集成块内部流道的三维流场进行了数值仿真计算.结果表明,BBD方法预测的总压损失系数与实际仿真结果吻合良好,验证了不同速度工况下直角转弯流道最佳因素水平取值具有相似性.最优参数组合为交连形式b、流道直径14.64mm以及刀尖角伸出比67.53％,与最不利因素水平相比,总压损失下降11.15％,如采用圆弧过渡直角转弯流道,总压损失则可降低64.57％,这为集成块流道参数优化指明了方向.%In order to optimize the hydraulic integrated flow path parameters based on single factor analysis,select channel overlapping form,diameter,knife sharp out as independent variables,the total pressure loss coefficient as the response value,the use of Box-Benhnken Design (BBD) method for the design of 3 factors and 3 levels of response surface experimental design.ANSYS FLUENT12.0 software is used to simulate the three-dimensional flow field of the internal flow passage of the integrated block.The results show that the BBD method to predict the total pressure loss coefficient of good agreement with the practical simulation results.It is verified that the optimal factor level of the right angled turning channel is similar in different speed conditions.The optimal combination of parameters linked form b,channel diameter 14.64mm and the knife pointed out ratio 67.53％,compared with the the most unfavorable factor levels,the total pressure loss decreased by 11.15％,if the arc transition turn flow,total pressure loss can be reduced by 64.57％,which pointed out the direction for the integrated flow path parameter optimization.
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