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An Exponential Decay Model for the Deterministic Correlations in Axial Compressors

[+] Author and Article Information
Yangwei Liu

National Key Laboratory of Science and Technology on Aero-Engine Aero-Thermodynamics, School of Energy and Power Engineering, Beihang University, Beijing 100191, China; Collaborative Innovation Center of Advanced Aero-Engine, Beihang University, Beijing 100191, China; No. 37 Xueyuan Road, Haidian District, Beihang University, Beijing 100191, China; State Key Laboratory of Aerodynamics, China Aerodynamics Research and Development Center, P.O.BOX 211 Mianyang Sichuan 621000, China
liuyangwei@126.com

Yumeng Tang

National Key Laboratory of Science and Technology on Aero-Engine Aero-Thermodynamics, School of Energy and Power Engineering, Beihang University, Beijing 100191, China; No. 37 Xueyuan Road, Haidian District, Beihang University, Beijing 100191, China
15201120825@163.com

Baojie Liu

National Key Laboratory of Science and Technology on Aero-Engine Aero-Thermodynamics, School of Energy and Power Engineering, Beihang University, Beijing 100191, China; Collaborative Innovation Center of Advanced Aero-Engine, Beihang University, Beijing 100191, China; No. 37 Xueyuan Road, Haidian District, Beihang University, Beijing 100191, China
liubj@buaa.edu.cn

Li-peng Lu

National Key Laboratory of Science and Technology on Aero-Engine Aero-Thermodynamics, School of Energy and Power Engineering, Beihang University, Beijing 100191, China; Collaborative Innovation Center of Advanced Aero-Engine, Beihang University, Beijing 100191, China; No. 37 Xueyuan Road, Haidian District, Beihang University, Beijing 100191, China
lulp@buaa.edu.cn

1Corresponding author.

ASME doi:10.1115/1.4041380 History: Received February 17, 2018; Revised August 27, 2018

Abstract

The unsteady blade row interaction (UBRI) is inherent and usually has a large effect on performance in multistage axial compressors. The effect could be considered by using the average-passage equation system (APES) in steady state environment by introducing the deterministic correlations (DC). How to model the DC is the key in APES method. The primary purpose of this study is to develop a DC model for compressor routine design. The APES technique is investigated by using a 3D viscous unsteady and time-averaging CFD flow solver developed in our previous studies. Based on DC characteristics and its effects on time-averaged flow, an exponential decay DC model is proposed and implemented into the developed time-averaging solver. Steady, unsteady and time-averaging simulations are conducted on the investigation of the UBRI and the DC model in the first transonic stage of NASA 67 and the first two stages of a multistage compressor. The DC distributions and mean flow fields from the DC model are compared with the unsteady simulations. The comparison indicates that the proposed model can take into account the major part of UBRI and provide significant improvements for predicting compressor characteristics and spanwise distributions of flow properties in axial compressors, compared with the steady mixing plane method.

Copyright (c) 2018 by ASME
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