Effect of injector on flow characteristic and hydraulic performance in aero-fuel centrifugal pump

IF 1 4区工程技术 Q3 ENGINEERING, AEROSPACE Proceedings of the Institution of Mechanical Engineers Part G-Journal of Aerospace Engineering Pub Date : 2024-06-22 DOI:10.1177/09544100241263024

Jia Li, Bo Liu, Wen Zhou, Jian Xie, Xuan Chen

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Abstract

In the fuel system of an aircraft engine, aero-fuel centrifugal pumps are widely utilized as boost pumps. In this research, we propose the integration of an inlet injector with an aero-fuel centrifugal pump to optimize its flow characteristics and enhance performance. The key geometric parameters of the impeller, volute, and injector are meticulously designed. The effectiveness of our approach is validated through a combination of experimental and numerical analysis, which involves comparing simulation results with experimental data. The findings demonstrate that the presence of the injector significantly impacts the flow characteristics and hydraulic performance of the pump. Specifically, it effectively reduces flow losses in the specific channels of the impeller and volute. Furthermore, the injector enhances the regulation of the inlet flow fields by adjusting the inlet pressure and controlling the suction flow direction. Consequently, the pump’s efficiency is enhanced when equipped with the injector compared to its performance without it. Therefore, incorporating an injector in an aero-fuel centrifugal pump has a positive effect on regulating flow characteristics and improving hydraulic efficiency.

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喷射器对航空燃料离心泵流量特性和液压性能的影响

在飞机发动机的燃油系统中，航空燃油离心泵被广泛用作增压泵。在这项研究中，我们提出了将进气口喷油器与航空燃油离心泵集成的方案，以优化其流动特性并提高性能。我们对叶轮、涡壳和喷射器的关键几何参数进行了精心设计。我们通过实验和数值分析相结合的方式，将模拟结果与实验数据进行比较，验证了我们方法的有效性。研究结果表明，喷射器的存在对泵的流动特性和水力性能有重大影响。具体来说，它能有效减少叶轮和涡壳特定通道中的流量损失。此外，喷射器还能通过调节入口压力和控制吸入流向来加强对入口流场的调节。因此，与未安装喷射器的泵相比，安装了喷射器的泵效率更高。因此，在航空燃料离心泵中安装喷射器对调节流量特性和提高液压效率具有积极作用。

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来源期刊

Proceedings of the Institution of Mechanical Engineers Part G-Journal of Aerospace Engineering 工程技术-工程：机械

CiteScore

2.40

自引率

18.20%

发文量

212

审稿时长

5.7 months

期刊介绍： The Journal of Aerospace Engineering is dedicated to the publication of high quality research in all branches of applied sciences and technology dealing with aircraft and spacecraft, and their support systems. "Our authorship is truly international and all efforts are made to ensure that each paper is presented in the best possible way and reaches a wide audience. "The Editorial Board is composed of recognized experts representing the technical communities of fifteen countries. The Board Members work in close cooperation with the editors, reviewers, and authors to achieve a consistent standard of well written and presented papers."Professor Rodrigo Martinez-Val, Universidad Politécnica de Madrid, Spain This journal is a member of the Committee on Publication Ethics (COPE).