张振华,於可心,曹方方,等.轴流压气机进气蜗壳的造型优化设计[J].内燃机工程,2025,46(3):88-97.
轴流压气机进气蜗壳的造型优化设计
Shape Optimization Design of Intake Volute for an Axial Flow Compressor
DOI：10.13949/j.cnki.nrjgc.2025.03.010
关键词:进气蜗壳  二次流损失  椭圆基函数  神经网络  多目标优化  导流器
Key Words:intake volute  secondary flow loss  elliptic basis function（EBF）  neural network  multi-objective optimization  deflector
基金项目:国家自然科学基金项目（52076179）
作者单位E-mail
张振华* 比亚迪汽车有限公司，西安 710100 944218692@qq.com 
於可心 比亚迪汽车有限公司，西安 710100 ykx19970426@163.com 
曹方方 比亚迪汽车有限公司，西安 710100 1456376416@qq.com 
楚武利 西北工业大学 动力与能源学院，西安 710129 wlchu@nwpu.edu.cn 
董杰忠 西北工业大学 动力与能源学院，西安 710129 djz19960324@163.com 
摘要点击次数: 22
全文下载次数: 3
摘要:基于Isight优化平台搭建了针对轴流压气机进气蜗壳的气动优化系统，该系统包括参数化建模、网格划分、数值模拟计算及后处理等过程。对进气蜗壳参数化后，采用最优拉丁超立方抽样获得空间上均匀分布的样本点，以总压损失系数和出口面速度不均匀度为目标函数，通过数值计算求出各样本点的目标函数值，建立椭圆基函数（elliptic basis function， EBF）神经网络代理模型，再使用第二代带精英策略的非支配排序的遗传算法（non-dominated sorting genetic algorithm Ⅱ， NSGA-Ⅱ）寻求目标函数的最优化。在Pareto前沿上选取三个优化结果M1、M2和M3并与原始模型比较，计算结果表明：M1、M2和M3的总压损失减小，出口速度不均匀度降低，二次流得到遏制。优化造型耦合导流器后，蜗壳的总压损失进一步减小，出口流场更加均匀，蜗壳气动性能得到进一步提升。
Abstract:An aerodynamic optimization system for axial compressor intake volute， which included parametric modeling， mesh division， numerical calculation and computational fluid dynamics（CFD） post-processing， was built based on Isight optimization platform. After the intake volute was parameterized， the optimal Latin hypercube sampling was used to obtain uniformly distributed sample points in space. The total pressure loss coefficient and the velocity unevenness of outlet surface were taken as the objective functions. The objective function values of all sample points were obtained through numerical calculation， and the elliptic basis function （EBF） neural network proxy model was established. Then the non-dominated sorting genetic algorithm-Ⅱ（NSGA-Ⅱ） with elite strategy was used to seek the optimization of the objective function.Three optimization results M1， M2 and M3 were selected on the Pareto front and compared with the original model. The calculation results show that the total pressure loss of M1， M2 and M3 and the exit velocity inhomogeneity of M1， M2 and M3 are reduced， and the secondary flow of M1， M2 and M3 is contained. After optimization of the modeling coupling deflector， the total pressure loss of the volute is further reduced， the outlet flow field is more uniform， and the aerodynamic performance of the volute is further improved.
查看全文  HTML   查看/发表评论