摘要
针对某型号增压器压气机级的叶轮和蜗壳进行稳态分析改进,采用NUMECA公司的FINETM/Design3D软件对叶轮型线进行优化设计,以效率、压比、功率为优化目标,整个过程贯穿了参数化建模,三维黏性气动数值分析、试验设计方法、遗传算法和神经网络技术;通过调整蜗壳环量来降低流动损失。对优化前后压气机的整体性能进行了比较,结果表明:整机效率提高了6%,压比提高了0.11,功率增加了0.5 kW。
To enhance performance of the turbocharger compressor stage,the impeller profile optimized design was performed based on steady numerical simulation using FINETM/Design3D software.The efficiency,pressure ratio and power were taken as optimized objectives.The optimization procedure included parameterized modeling,3D viscous flow aerodynamic numerical simulation,design of experiment,adoption of genetic algorithm and artificial neural network technique.Total pressure loss in volute was decreased by adjusting the velocity circulation.Compared with the original,total efficiency,pressure ratio of the optimized turbocharger and the engine power rise respectively by 6 %,0.11 and 0.5 kW.
出处
《内燃机工程》
EI
CAS
CSCD
北大核心
2010年第5期41-46,共6页
Chinese Internal Combustion Engine Engineering
关键词
内燃机
增压器
离心压气机
多目标优化
参数化造型
IC engine
turbocharger
centrifugal compressor
multi-objective optimization
parameterized modeling
