Structural Design and Performance Optimization of High-Flow Multi-Hole Nozzle Ejectors

IF 2.4 3区工程技术 Q3 MECHANICS

Flow, Turbulence and Combustion Pub Date : 2026-03-30 DOI:10.1007/s10494-026-00743-1

Huali Zhang, Lili Jiao, Xuewen Zhang, Xiang Li, Peiyong Ni, Zhimin Xu

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Abstract

As an efficient and stable fluid delivery device, the ejector plays a critical role in various gas supply systems. However, existing ejector designs often fail to meet performance requirements under all operating conditions. This study focuses on optimizing the ejector structure for applications involving high flow rates and limited installation space, thereby expanding its applicability. The key geometric dimensions of the ejector were determined using the Sokolov method. A three-dimensional fluid simulation model was developed and validated through experimental testing. Under various operating conditions, the effects of Nozzle Exit Position (NXP), mixing chamber diameter (D_m), mixing chamber length (L_m), and Flow-Distributing Net curvature (K) on ejector performance were analyzed. The optimal structural parameters that meet the design requirements were identified. The results show that when the primary flow pressure is 350 kPa, the optimal design parameters for the ejector are NXP = 15 mm, D_m = 60 mm, L_m = 60 mm, and K = 0. These values yield the best overall performance. This research provides valuable technical support for the application of ejectors in gas fuel supply systems.

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大流量多孔喷管喷射器结构设计与性能优化

喷射器作为一种高效、稳定的流体输送装置，在各种供气系统中起着至关重要的作用。然而，现有的喷射器设计往往不能满足所有操作条件下的性能要求。本研究的重点是优化喷射器结构，以适应大流量和有限安装空间的应用，从而扩大其适用性。采用Sokolov法确定了喷射器的关键几何尺寸。建立了三维流体仿真模型，并通过实验验证了该模型的有效性。在不同工况下，分析了喷嘴出口位置（NXP）、混合室直径（Dm）、混合室长度（Lm）和配流净曲率(K)对喷射器性能的影响。确定了满足设计要求的最优结构参数。结果表明，当一次流压力为350 kPa时，喷射器的最佳设计参数为NXP = 15 mm, Dm = 60 mm, Lm = 60 mm, K = 0。这些值产生最佳的整体性能。该研究为喷射器在燃气供应系统中的应用提供了有价值的技术支持。

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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来源期刊

Flow, Turbulence and Combustion 工程技术-力学

CiteScore

5.70

自引率

8.30%

发文量

审稿时长

2 months

期刊介绍： Flow, Turbulence and Combustion provides a global forum for the publication of original and innovative research results that contribute to the solution of fundamental and applied problems encountered in single-phase, multi-phase and reacting flows, in both idealized and real systems. The scope of coverage encompasses topics in fluid dynamics, scalar transport, multi-physics interactions and flow control. From time to time the journal publishes Special or Theme Issues featuring invited articles. Contributions may report research that falls within the broad spectrum of analytical, computational and experimental methods. This includes research conducted in academia, industry and a variety of environmental and geophysical sectors. Turbulence, transition and associated phenomena are expected to play a significant role in the majority of studies reported, although non-turbulent flows, typical of those in micro-devices, would be regarded as falling within the scope covered. The emphasis is on originality, timeliness, quality and thematic fit, as exemplified by the title of the journal and the qualifications described above. Relevance to real-world problems and industrial applications are regarded as strengths.