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为探索三维掠动叶降低对转压气机二次流损失的潜力,进一步提高对转压气机气动性能,基于近似函数与遗传算法,针对某对转压气机双排转子在整机环境下进行三维掠动叶优化设计,并对优化前后流场进行对比分析。优化成功的得到了双排“S”形掠动叶,结果表明:三维掠动叶有效改善了双排动叶吸力面径向二次流,减小了吸力面低速区,提高了对转压气机性能,优化工况点整机效率提高0.6%,全工况范围内效率均有所提高;三维掠动叶提高对转压气机效率的根本原因是其对径向负荷分配的重新调整,将叶展下方流动较差区域负荷移至叶展上方,改善流场的同时保证对转压气机负荷不变。
In order to explore the potential of the three-dimensional swept-leaf blade to reduce the secondary flow loss of the rotary compressor and further improve the aerodynamic performance of the rotary compressor, based on the approximate function and the genetic algorithm, a three- Swept leaf optimization design, and comparative analysis of the flow field before and after optimization. The results show that the three-dimensional swept blade effectively improves the radial secondary flow on the suction surface of double-row moving blades, reduces the low-velocity area of suction surface, Turbocharger performance, the optimized operating conditions of the machine efficiency increased by 0.6%, the efficiency of the whole operating conditions have increased; three-dimensional swept the blade to improve the efficiency of the compressor is the root cause of its radial load distribution to readjust , Will be less than the leaf area under the flow of moving load moved to the top of the leaf exhibition to improve the flow field at the same time ensure that the load on the compressor unchanged.