Accurate measurement and evaluation method of axial compressor efficiency under the influence of multiple factors
Author:
Yong Yang1, Yaoming Fu1, Binbin Lin1, Kuanxin Hou1, Ling Bing Kong1, Honghui Xiang2, Jie Gao2, Shiqi Jiang3
Affiliation:
1. Department of Flight Technology , Civil Aviation Flight University of China , Guanghan 618703 , China 2. Sichuan Gas Turbine Establishment , Aero Engine Corporation of China , Mianyang 621000 , China 3. School of Automation , Chengdu University of Information Technology , Chengdu 610225 , China
Abstract
Abstract
In order to improve the effectiveness of compressor efficiency measurement results under the influence of complex factors, several research work have been carried out, such as inverse connection of thermocouple suitable for efficiency measurement under low pressure ratio and small temperature rise conditions, torque efficiency correction considering the mechanical loss of high speed gearbox under various working conditions, and identification of the impact of seal cavity leakage flow on efficiency measurement. Compared with the conventional connection method of thermocouple, the inverse connection method of thermocouple shows obvious advantages in efficiency measurement under low pressure ratio and small temperature rise conditions. At medium and low speeds, the conventional simplified correction method will lead to the high measurement results of torque efficiency after installing the high speed gearbox. The accuracy of torque efficiency measurement can be improved by adopting the improved correction method. Increasing the oil supply pressure of the high speed gearbox or reducing the oil supply temperature will increase the mechanical loss of the high speed gearbox. The air flow in the compressor bearing seal chamber will leak into the flow passage through the labyrinth clearance, resulting in discontinuous changes of the inlet/outlet flow of compressor.
Publisher
Walter de Gruyter GmbH
Subject
Aerospace Engineering
Reference25 articles.
1. Adamczyk, JJ, Hansen, JL, Prahst, PS. A post test analysis of a high-speed two-stage axial flow compressor. In: ASME paper GT2007-28057, turbo expo: power for land, sea, and air; 2007, vol 47950:377–88 pp. 2. Gannon, AJ, Hobson, GV, Shreeve, RP, Villescas, LJ. Experimental investigation during stall and surge in a transonic fan stage and rotor-only configuration. In: ASME paper GT2006-90925, turbo expo: power for land, sea, and air; 2006, vol 4241:367–76 pp. 3. Hah, C, Voges, M, Mueller, M, Schiffer, HP. Characteristics of tip clearance flow instability in a transonic compressor. In: ASME paper GT2010-22101, turbo expo: power for land, sea, and air; 2010, vol 44021:63–74 pp. 4. Ottavy, X, Trebinjac, I, Vouillarmet, A. Analysis of the inter-row flow field within a transonic axial compressor: part 1-experiment investigation. In: ASME paper 2000-GT-496, turbo expo: power for land, sea, and air. American Society of Mechanical Engineers; 2000, vol 4096:4104 p. 5. Jiang, S, Qiu, Q, Yuan, S, Shi, XJ, Li, L, Zhang, XY, et al.. Stochastic resonance for a bistable system with multiplicative noise and additive recycled noise. Indian J Phys 2022;96:1–7. https://doi.org/10.1007/s12648-022-02301-7.
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