Improved Body Force Model for Estimating Off-Design Axial Compressor Performance

Jia Huang, Yongzhao Lv, Aiguo Xia, Shengliang Zhang, Wei Tuo, Hongtao Xue, Yantao Sun and Xiuran He
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Jia Huang: School of Aeronautics and Astronautics, Central South University, Changsha 410083, China
Yongzhao Lv: Beijing Aeronautical Engineering Technical Research Center, Beijing 100076, China
Aiguo Xia: Beijing Aeronautical Engineering Technical Research Center, Beijing 100076, China
Shengliang Zhang: Beijing Aeronautical Engineering Technical Research Center, Beijing 100076, China
Wei Tuo: Beijing Aeronautical Engineering Technical Research Center, Beijing 100076, China
Hongtao Xue: Beijing Aeronautical Engineering Technical Research Center, Beijing 100076, China
Yantao Sun: Beijing Aeronautical Engineering Technical Research Center, Beijing 100076, China
Xiuran He: Beijing Aeronautical Engineering Technical Research Center, Beijing 100076, China

Energies, 2022, vol. 15, issue 12, 1-18

Abstract: Based on the COMSOL software, body forces substituted into the Reynolds-averaged Navier–Stokes (RANS) equations as the source terms instead of the actual blade rows were improved to better predict the compressor performance. Improvements in parallel body force modeling were implemented, central to which were the local flow quantities. This ensured accurate and reliable off-design performance prediction. The parallel force magnitude mainly depended on the meridional entropy gradient extracted from three-dimensional (3D) steady single-passage RANS solutions. The COMSOL software could easily and accurately translate the pitchwise-averaged entropy into the grid points of the body force domain. A NASA Rotor 37 was used to quantify the improved body force model to represent the compressor. Compared with the previous model, the improved body force model was more efficient for the numerical calculations, and it agreed well with the experimental data and computational fluid dynamics (CFD) results. The results indicate that the improved body force model could quickly and efficiently capture the flow field through a turbomachinery blade row.

Keywords: improved body force model; off-design; Reynolds-averaged Navier–Stokes equations; meridional entropy gradient; rotor 37 (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
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