Computational Study on S-Shaped Inlet and Fan Coupling Based on Body Force Model

被引：0
|
作者：
Xu Z.-L. [1 ]
Da X.-Y. [1 ]
Wu J.-Q. [1 ]
机构：
[1] High Speed Aerodynamics Institute, China Aerodynamic Research and Development Center, Mianyang
来源：
Tuijin Jishu/Journal of Propulsion Technology | 2019年 / 40卷 / 07期
关键词：
Coupling effect; Inlet; Rotor; 67; Swirl distortion; Total pressure distortion;
D O I：
10.13675/j.cnki.tjjs.180460
中图分类号：
学科分类号：
摘要：
Towards understanding the coupling effect between ultra-compact S-shaped inlet and fan, integrated simulation study was carried out using body force modeling method. The inlet model has a length to diameter ratio of 2.5 and Rotor 67 was used for the coupling analysis. The differences between body force modeling and frozen rotor simulation are 4.49%, 0.26% and 2.38% respectively for total pressure ratio, total temperature ratio and isentropic efficiency. Flow field analysis shows that, in the entrance part, the fan has a significant influence on the distorted flow which is co-rotated with the fan and attenuated slightly. The distortion is holistically improved after the fan blades where the large low pressure region and counter-rotating swirl disappear. The more the swirl angle and axial velocity between the leading and trialing edges change, the higher the fan works. In summary, the coupling between the ultra-compact S-shaped inlet and fan is significant and needs to be examined in details. © 2019, Editorial Department of Journal of Propulsion Technology. All right reserved.
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页码：1441 / 1448
页数：7
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