首页> 外文会议>2003 ASME(American Society of Mechanical Engineers) Turbo Expo; Jun 16-19, 2003; Atlanta, Georgia >CENTRIFUGAL COMPRESSOR OF A 100 KW MICROTURBiNE: PART 2 - NUMERICAL STUDY OF IMPELLER-DIFFUSER INTERACTION
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CENTRIFUGAL COMPRESSOR OF A 100 KW MICROTURBiNE: PART 2 - NUMERICAL STUDY OF IMPELLER-DIFFUSER INTERACTION

机译:100 kW微型涡轮的离心压缩机:第2部分-叶轮-扩散器相互作用的数值研究

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The interaction between impeller and diffuser blades in high-speed centrifugal compressors is thought to have a significant influence on the flow within the diffuser. In this part, Computational Fluid Dynamics is exploited to simulate, visualize and analyze the complex flow generated by the interaction, with particular emphasis on the unsteady behavior of the vaned diffuser of the microturbine compressor studied in part 1. For this purpose, the 3D geometry of the compressor stage is studied by performing a fully unsteady simulation of rotor-stator interaction. The results of the unsteady calculation regarding the diffuser performance are then averaged in time and compared with those obtained with a fully steady and decoupled computation in order to highlight the main difference between the two approaches.
机译:高速离心压缩机中叶轮和扩压器叶片之间的相互作用被认为对扩压器内的流动有重大影响。在这一部分中,利用计算流体动力学来模拟,可视化和分析由相互作用产生的复杂流,其中特别着重于第1部分中研究的微型涡轮压缩机的叶片式扩压器的非稳态行为。为此,3D几何通过对转子-定子相互作用进行完全非稳态的模拟来研究压缩机级的温度。然后,将与扩压器性能有关的非稳态计算结果进行时间平均,并与通过完全稳态和解耦计算获得的结果进行比较,以突出两种方法之间的主要区别。

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