猫耳形气膜孔的参数化设计与组合实验优化  

Parametric design and combined experiment optimization of Nekomimi film hole

作　　者：钱小东 鲍阿美[1] 魏双 卢宇峰 陈榴 QIAN Xiaodong;BAO Amei;WEI Shuang;LU Yufeng;CHEN Liu(School of Energy and Power Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China;Hangzhou Chinen Steam Turbine Power Co.,Ltd.,Hangzhou 310018,China)

机构地区：[1]上海理工大学能源与动力工程学院,上海200093 [2]杭州中能汽轮动力有限公司,杭州310018

出　　处：《上海理工大学学报》2023年第5期460-467,476,共9页Journal of University of Shanghai For Science and Technology

基　　金：国家自然科学基金资助项目(52006147)。

摘　　要：孔型是提高气膜冷效的关键途径,猫儿形气膜孔冷却效果好,但是构型复杂。基于Isight软件,采用参数化建模优化猫儿形气膜孔。通过敏感性分析减少设计变量并缩小变量的取值范围,组合运用拉丁超立方法和均匀设计法构建实验样本,提高冷效预测代理模型的精度。结果表明:代理模型的冷效预测值与数值模拟的偏差小于1.0%。采用多岛遗传算法获得的优化孔的面平均冷效比参考孔提高了85.7%。采用实验方法测量结果显示,与参考孔相比,优化孔的面平均冷效提高了76%,横向冷效与中心线冷效与数值计算结果一致。The hole type is the key way to improve the film cooling effectiveness.Nekomimi film hole has good cooling performance but complicated configuration.The Isight software was used to optimize Nekomimi film hole through parametric modeling.Variable sensitivity was conducted to reduce variable dimensions and potential value ranges.The Latin hypercubic and the uniform design methods were both used to construct design sample space to improve the prediction accuracy of the surrogate model.Results show that the deviation of cooling efficiency between the surrogate model and the simulated computation is within 1.0%.An optimal hole obtained via the multi-island genetic algorithm has significant 85.7%improvement of surface averaged film cooling efficiency over the reference hole.The surface averaged cooling efficiency of the optima hole is increased by 76%compared to the reference hole,and the laterally and the centerline cooling efficiency are consistant with numerical results.

关 键 词：气膜冷却 代理模型 参数化建模 敏感性分析 组合实验设计 

分 类 号：TK472[动力工程及工程热物理—动力机械及工程]