周向平均方法在某风扇/增压级分析中的应用

doi:10.7527/S1000-6893.2013.0333

Abstract

Abstract:

The governing equations of a throughflow model are derived by circumferentially averaging the three-dimensional (3D) Navier-Stokes equations, which are solved using a time marching finite volume approach. In order to rapidlly obtain the performance predictions and flow fields of fan/booster in the preliminary design stage, the rebiability of circumferentially averaged method (CAM) is investigated. A high throughflow fan/booster is evaluated by 3D numerical simulation NUMECA and a circumferentially averaged throughflow model. The results reveal that the performance predicted by NUMECA at the near design point is very close to the 3D results, with a maximum error under 2.0%. As the passage shock can be captured by circuferentially averaged method in the fan, which is physically at variance with the 3D averaged results, the total pressure ratio and adiabatic efficiency radial distributions are somewhat different from the 3D computation results. In the subsonic flow, the radial distributions of blade rows in the booster and bypass fit well with the 3D simulation results.

Key words: throughflow model, circumferentially averaged, fan/booster, performance, numerical simulation

CLC Number:

V231.3

WAN Ke, ZHU Fang, JIN Donghai, GUI Xingmin. Application of Circumferentially Averaged Method in Fan/Booster[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2014, 35(1): 132-140.

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Application of Circumferentially Averaged Method in Fan/Booster

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