大流量系数离心压气机叶顶间隙效应的数值与实验研究

IF 0.7 4区工程技术 Q4 ENGINEERING, AEROSPACE

International Journal of Turbo & Jet-Engines Pub Date : 2022-03-28 DOI:10.1515/tjj-2022-0002

Chenxi Zhao, Chang-Hyun Yang, Chenqing Zhang, Xiaotian Zhang, G. Xi

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引用次数: 0

摘要

本文主要研究了高流量系数离心压缩机叶片变形和叶尖间隙的影响。为了准确地模拟级性能，采用流固耦合方法考虑了运行工况下压力载荷和离心载荷引起的叶片变形。因此，数值计算结果与实验数据吻合较好。然后对叶片的变形进行了详细分析。此外，通过评估五种不同间隙的性能，研究了叶尖间隙大小的影响。结果表明，叶尖间隙从0增加到2.0mm会导致5.14%的峰值效率下降。然而，增加叶尖间隙有助于扩大失速裕度和阻风门裕度方面的稳定运行范围。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Numerical and experimental investigations of tip clearance effects in a high-flow-coefficient centrifugal compressor

Abstract This paper focuses on the investigation of the blade deformation and tip clearance effects of a high-flow-coefficient centrifugal compressor. Blade deformation caused by the pressure load and centrifugal load under operating condition is considered by fluid/solid interaction method to simulate the stage performance accurately. Hence the numerical results are in good agreement with the experimental data. The blade deformation is then analyzed in detail. Also, the effect of the size of tip clearance is studied by evaluating the performance with five various gaps. The result shows that the increment of the tip clearance from 0 to 2.0 mm leads to a 5.14% peak efficiency decline. However, increasing tip gap contributes to enlarge the stable operating range in terms of stall margin and choke margin.

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来源期刊

International Journal of Turbo & Jet-Engines 工程技术-工程：宇航

CiteScore

1.90

自引率

11.10%

发文量

审稿时长

6 months

期刊介绍： The Main aim and scope of this Journal is to help improve each separate components R&D and superimpose separated results to get integrated systems by striving to reach the overall advanced design and benefits by integrating: (a) Physics, Aero, and Stealth Thermodynamics in simulations by flying unmanned or manned prototypes supported by integrated Computer Simulations based on: (b) Component R&D of: (i) Turbo and Jet-Engines, (ii) Airframe, (iii) Helmet-Aiming-Systems and Ammunition based on: (c) Anticipated New Programs Missions based on (d) IMPROVED RELIABILITY, DURABILITY, ECONOMICS, TACTICS, STRATEGIES and EDUCATION in both the civil and military domains of Turbo and Jet Engines. The　International Journal of Turbo & Jet Engines　is devoted to cutting edge research in theory and design of propagation of jet aircraft. It serves as an international publication organ for new ideas, insights and results from industry and academic research on thermodynamics, combustion, behavior of related materials at high temperatures, turbine and engine design, thrust vectoring and flight control as well as energy and environmental issues.