Analysis of Flow Field Distortion in Ship Inlet System and Its Effect on Compressor Performance

IF 17.7 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Accounts of Chemical Research Pub Date : 2024-02-01 DOI:10.47176/jafm.17.02.2101

Z. Y. Wang, †. C.X.He, Y. Qu

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Abstract

Intake system structure design is categorized under gas turbine marine technology, and its performance affects the inlet flow field of the compressor, thereby impacting the overall operation stability of the gas turbine. Therefore, this study analyses the structural characteristics of various types of intake systems and establishes a computational domain model. Numerical simulation methods are used to systematically study the internal and external flow fields of the intake system. By varying the structure of the intake system, we compare and study the distribution form of the flow field inside and outside the intake system, velocity and total pressure distribution of the compressor inlet section, and flow loss inside the intake system. The speed and total pressure distortion of the compressor inlet section are analysed quantitatively. It was concluded that inlet distortion causes the leakage flow from some channels to spill into adjacent blade channels at the leading edge of the higher span, resulting in an early compressor stall. Specifically, the compressor stall and working flow margins are reduced by 2.51% and 2.76%, respectively.

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船舶进气系统中的流场畸变及其对压缩机性能的影响分析

进气系统结构设计属于燃气轮机船用技术范畴，其性能会影响压缩机的进气流场，从而影响燃气轮机的整体运行稳定性。因此，本研究分析了各类进气系统的结构特征，并建立了计算域模型。采用数值模拟方法系统地研究了进气系统的内部和外部流场。通过改变进气系统的结构，比较并研究了进气系统内外流场的分布形式、压缩机入口段的速度和总压分布以及进气系统内部的流动损失。对压缩机入口段的速度和总压畸变进行了定量分析。结果表明，入口变形会导致一些通道的泄漏流溢出到较高跨度前缘的相邻叶片通道，从而导致压缩机提前失速。具体来说，压缩机失速和工作流量裕度分别降低了 2.51% 和 2.76%。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.