热流固耦合下增压器涡壳多目标优化

摘要/Abstract

摘要：

以某型增压器涡壳为研究对象，采用热流固耦合分析方法，建立涡壳热流固耦合的有限元模型，对增压器涡壳热结构进行分析，获得涡壳的热塑性应变分布，确定涡壳产生热结构破坏的部位，并与涡壳热循环试验结果相比较，验证了涡壳热流固耦合分析模型的正确性。选取涡壳三个危险部位的热塑性应变为优化目标，采用响应面方法，构建了以涡壳危险部位结构尺寸参数为设计变量，以增压器涡壳的热塑性应变为优化目标的结构优化近似模型，采用基于响应面方法和遗传算法的多目标优化方法获得涡壳最优结构参数组合，并通过了热流固耦合仿真的验证。涡壳三个危险部位的热塑性应变分别从原来的3.3%、3.2%、2.6%降为0.66%、0.8%、1.03%，表明该优化方法改善了涡壳的热结构强度，降低了涡壳产生热裂纹的风险，提高了涡壳的热结构稳定性与可靠性。

关键词: 热流固耦合, 涡壳, 响应面法, 多目标优化

Abstract:

A thermo-fluid-solid interaction method of turbocharger housing was proposed and a finite element model was established.The thermal structure of turbocharger housing was analyzed.The distribution of thermo plasticity strain and the location of thermal structure destruction of turbine housing were found by thermo-fluid-solid interaction analyses.Analysis results were compared with the thermal cycling test results of the turbine housing and the correctness of the thermo-fluid-solid interaction model was proved.The thermo plasticity strain of three risk regions in turbine housing were selected as optimization objectives,a structure optimization approximation model was established by response surface method, which took size parameters of dangerous parts as design variables and the thermo plasticity strain of turbine housing as optimization objectives.The optimal structural parameter combination of the turbine housing was obtained by multi-objective optimization method based on response surface method and genetic algorithm,and the optimization model was verified by thermo-fluid-solid interaction experiments.The results show that the thermo plasticity strains of three risk regions in turbine housing decrease from 3.3%,3.2%,2.6% to 0.66%,0.8%,1.03% respectively.The optimization method can improve thermal structure intensity,reduce the risk of hot cracking formation and improve the stability and reliability of heat structure of turbine housing.

Key words: thermo-fluid-solid , interaction;turbine housing;response , surface , methodology;multi-objective optimization

中图分类号:

TG156

李发宗, 童水光, 袁铭鸿. 热流固耦合下增压器涡壳多目标优化[J]. 中国机械工程, 2016, 27(06): 754-760,766.

Li Fazong, Tong Shuiguang, Yuan Minghong. Multi-objective Optimization for Turbocharger Housing Considering Thermo-fluid-solid Interaction[J]. China Mechanical Engineering, 2016, 27(06): 754-760,766.

参考文献

[1]陈朝辉.涡轮增压器主要零部件的模态计算及压气机CFD分析[D].昆明：昆明理工大学,2006.

[2]Nagode M,Lngler F,Hack M.Damage Operator Based Lifetime Calculation under Thermo-mechanical Fatigue for Application on Ni-resist D-5S Turbine Housing of Turbocharger[J].Engineering Failure Analysis,2011,18:1565-1575.

[3]胡友安,周建方,李晓东,等.涡壳结构参数的正交试验优化设计[J].内燃机学报,2006,24(5):470-475.

Hu Youan,Zhou Jianfang,Li Xiaodong,et al.Optimal Designs of Structural Parameters by Orthogonal Experiment[J].Transactions of CSICE,2006,24(5):470-475.

[4]胡友安,李晓东,陈图钧. 涡壳温度场和热应力的有限元分析[J]. 机械强度,2007,29(1):130-134.

Hu Youan, Li Xiaodong,Chen Tujun.Analysis on Temperature Field and Thermal Stress of Turbocharger Housing by Finite Element Method[J].Journal of Mechanical Strength,2007,29(1):130-134.

[5]邓帮林,刘敬平,杨靖,等. 某缸盖热机疲劳分析[J]. 湖南大学学报(自然科学版),2012,39(2):30-34.

Deng Banglin, Liu Jingping, Yang Jing, et al. The Thermal Mechanical Fatigue Analysis on a Cylinder Head[J].Journal of Hunan University(Natural Sciences),2012,39(2):30-34.

[6]周晓君,王剑,段志明,等.基于ANSYS-CFX的簧片哨流固耦合特性研究[J]. 工业控制计算机,2014,27(8):29-31.

Zhou Xiaojun,Wang Jian,Duan Zhiming,et al.FSI Characteristics of Reed Whistle Based on ANSYS-CFX[J].Industrial Control Computer,2014,27(8):29-31.

[7]李翼飞. 基于N-S方程的复杂流体效果模拟[D].天津：天津大学,2009.

[8]张健,黄晨光.三维瞬态方形管流的热流固耦合数值模拟[J].工程力学, 2010,27(6):232-239.

Zhang Jian,Huang Chenguang.Numerical Simulation of 3-D Transient Thermo-fluid-solid Coupled Flow in a Rectangular Channel[J].Engineering Mechanics,2010,27(6):232-239.

[9]沈妍,张红,许辉,等.多孔介质-钠液体系微尺度热流固耦合模拟[J].南京工业大学学报(自然科学版),2014,36(2):54-58.

Shen Yan,Zhang Hong,Xu Hui,et al.Simulation of Porous Media-liquid Sodium System in Micro-scale by Thermal Fluid Structure Coupled Method[J].Journal of Nanjing University of Technology(Natural Science Edition),2014,36(2):54-58.

[10]刘智鑫.汽油机三元催化器内流场与热应力分析[J].汽车工程学报, 2014,4（5):378-383.

Liu Zhixin.Internal Flow Field and Thermal Stress Analysis for Catalytic Converters in Gasoline Engine[J].Chinese Journal of Automotive Engineering,2014,4（5）:378-383.

[11]李红庆,杨万里,刘国庆,等.内燃机排气歧管热应力分析[J].内燃机工程,2005,26（5）:81-84.

Li Hongqing,Yang Wanli,Liu Guoqing,et al.Thermal Stress Analysis of ICE Exhaust Manifold[J].Chinese Internal Combustion Engine Engineering,2005,26(5):81-84.

[12]Galindo J,Fajardo P,Navarro R.Characterization of a Radial Turbocharger Turbine in Pulsating Flow by Means of CFD and Its Application to Engine Modeling[J].Applied Energy， 2013，103:116-127.

[13]胡友安,李晓东. 涡轮增压器蜗壳热裂纹的试验研究[J]. 河海大学学报(自然科学版),2008,36(6):846-849.

Hu Youan, Li Xiaodong. Experimental Study on Heat Cracks of Turbine Housing on Turbochargers [J]. Journal of Hohai University(Natural Sciences), 2008,36(6):846-849.

[14]席光,王志恒,王尚锦. 叶轮机械气动优化设计中的近似模型方法及其应用[J]. 西安交通大学学报,2007,41(2):125-135.

Xi Guang,Wang Zhiheng,Wang Shangjin.Aerodynamic Optimization Design of Turbomachinery with Approximation Model Method[J].Journal of Xi'an Jiaotong University,2007,41(2):125-135.

[15]解艳彩. 基于响应面法的机械结构可靠性灵敏度分析[D].长春：吉林大学,2008.

[16]徐涛,郝亮,徐天爽,等. 轿车侧碰中车门抗撞性的快速优化[J]. 吉林大学学报(工学版),2012,42(3):677-682.

Xu Tao,Hao Liang,Xu Tianshuang,et al.Fast Crashworthiness Optimization of Car Door During Side Collision[J].Journal of Jilin University(Engineering and Technology Edition),2012,42(3):677-682.

[17]赵志刚,李陶深,杨林峰. 求多目标优化问题的粒子群优化算法[J]. 计算机工程与应用,2009,45(29):37-40.

Zhao Zhigang,Li Taoshen,Yang Linfeng.Particle Swarm Optimization for Multi-objective Programming Problems[J].Computer Engineering and Applications,2009,45(29):37-40.

[18]杨荣山,黄向东,王玉超,等.轿车底盘平台开发中多目标优化方法的研究[J].机床与液压,2009,37（12）:200-203.

Yang Rongshan,Huang Xiangdong,Wang Yuchao,et al.The Multi Objective Optimization Methods on the Development of Car Chassis Platform[J].Machine Tool & Hydraulics,2009,37(12):200-203.

[19]盖洪武,程颖,姚秀功.柴油机气缸盖结构参数多目标优化[J].汽车工程,2014（7）:828-832.

Gai Hongwu,Cheng Ying,Yao Xiugong.Multi-objective Optimization for the Structure Parameters of Cylinder Head in a Diesel Engine[J].Automotive Engineering,2014（7）:828-832.