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中文摘要：
建立了离心压缩机整级的物理损失模型，编制用于离心压缩机整级性能参数优化的遗传算法程序，并对优化前后该离心压缩机整级性能进行了数值模拟分析，以证实损失模型的可靠性以及将CHC遗传算法引入离心压缩机级性能参数优化的可行性．结果表明：与优化前相比，优化后整级的性能得到了一定程度的提升，级内流动更加合理，消除了分离，减少了损失．
英文摘要：
A whole stage physical loss model of centrifugal compressor was founded, while a genetic algorithm procedure was programmed for optimization of the whole stage performance parameters. To verify the reliability of the physical loss model and to study the feasibility using CHC genetic algorithm to optimize the whole stage performance parameters, numerical simulations were carried out on the whole stage performance before and after optimization. Results show that compared with the performance before opti- mization, the whole stage performance has been improved after optimization, with more reasonable inner flow field obtained in the stage, where flow separations are avoided and flow loss is reduced.
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