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为降低对槽道式处理机匣流动进行模拟的计算量,特别地,为了提供一种可用于处理机匣工程设计的快速评估手段,基于对带有槽道式处理机匣的压气机非定常流动物理的理解,提出了一种处理机匣的准定常流动模型,并利用带有处理机匣的跨声压气机转子实验测量结果,以及非定常数值模拟结果对所提出的模型进行了验证.结果表明:处理机匣流动模型很好地预测了由于采用处理机匣所取得的转子失速裕度的提高,并且与非定常模拟结果比较,流动模型对转子主流以及处理机匣内部流动模拟的准确性也能得到保证.采用处理机匣流动模型所需的计算量仅约为非定常模拟的1%,这保证了提出的模型可用于快速评估槽道式处理机匣的气动特性,从而为其工程优化设计提供了有效的手段.
To reduce the computational complexity of simulating slotted cartridge flow, in particular, in order to provide a rapid assessment tool that can be used to handle case design, based on the non-steady state of the compressor with slotted case, Flow physics, this paper presents a quasi-steady flow model for handling the casing. The experimental results of the transonic compressor rotor with casing are verified and the results of the unsteady numerical simulation are validated. The results show that the treatment of the casing flow model is a good predictor of rotor stall margin improvement due to the use of the casing, and compared with the unsteady simulation results, the accuracy of the flow model for the simulation of the rotor internal flow and the internal flow of the casing The computational effort required to handle the pocket flow model is only about 1% of the unsteady simulation, which ensures that the proposed model can be used to quickly assess the aerodynamic characteristics of a slotted casing so that its Engineering Optimization Design provides an effective means.