Optimization of geometry parameters for a high-performance supersonic abrasive jet nozzle: An experimental and numerical study

IF 3.9 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Vacuum Pub Date : 2025-10-16 DOI:10.1016/j.vacuum.2025.114831

Yan Hu , Jincheng Zhang , Rumeng Han , Youyu Liu , Bowen Wu , Jiabao Pan

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引用次数: 0

Abstract

Vacuum suction abrasive jet machining (AJM), as a unique solid particle erosion technique utilizing supersonic pneumatic conveying, faces limitations in micro-nozzle fabrication and low energy utilization. This work presents an innovative nozzle design for vacuum suction AJM, featuring a Laval-shaped motive tube and fabricated via 3D printing. To determine optimal geometry parameters for enhancing vacuum generation and slurry transport, experiments and simulations were conducted to investigate the effects of motive tube and mixing chamber. The results demonstrate that the suitable mixing chamber size and the Laval-shaped motive tube, when positioned optimally and with an appropriate divergence angle of 9°, can significantly enhance vacuum generation and maximize slurry conveyance. Compared to the conventional nozzle equipped with a convergent motive tube, the new design achieves a 125 % increase in vacuum degree, a 124 % improvement in slurry flowrate, and a 95 % enhancement in material removal efficiency. The significance of this work lies in its potential to guide the design of vacuum suction AJM nozzle and to promote its further adoption.

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高性能超音速磨料射流喷嘴几何参数优化：实验与数值研究

真空吸力磨料射流加工作为一种独特的利用超音速气动输送的固体颗粒侵蚀技术，存在微喷嘴制造和能量利用率低等局限性。本文提出了一种新颖的真空吸力AJM喷嘴设计，采用拉瓦尔形动力管，并通过3D打印制造。为了确定提高真空产生和浆料输运的最佳几何参数，对动力管和混合室的影响进行了实验和模拟研究。结果表明：选择合适的混合室尺寸和拉瓦尔型动力管，当其位置为最佳且发散角为9°时，可以显著增强真空的产生，最大限度地提高料浆的输送能力。与配备会聚动力管的传统喷嘴相比，新设计的喷嘴真空度提高了125%，浆体流量提高了124%，材料去除效率提高了95%。本研究的意义在于对真空吸力AJM喷嘴的设计具有指导意义，并可促进其进一步推广应用。

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

Vacuum 工程技术-材料科学：综合

CiteScore

6.80

自引率

17.50%

发文量

审稿时长

34 days

期刊介绍： Vacuum is an international rapid publications journal with a focus on short communication. All papers are peer-reviewed, with the review process for short communication geared towards very fast turnaround times. The journal also published full research papers, thematic issues and selected papers from leading conferences. A report in Vacuum should represent a major advance in an area that involves a controlled environment at pressures of one atmosphere or below. The scope of the journal includes: 1. Vacuum; original developments in vacuum pumping and instrumentation, vacuum measurement, vacuum gas dynamics, gas-surface interactions, surface treatment for UHV applications and low outgassing, vacuum melting, sintering, and vacuum metrology. Technology and solutions for large-scale facilities (e.g., particle accelerators and fusion devices). New instrumentation ( e.g., detectors and electron microscopes). 2. Plasma science; advances in PVD, CVD, plasma-assisted CVD, ion sources, deposition processes and analysis. 3. Surface science; surface engineering, surface chemistry, surface analysis, crystal growth, ion-surface interactions and etching, nanometer-scale processing, surface modification. 4. Materials science; novel functional or structural materials. Metals, ceramics, and polymers. Experiments, simulations, and modelling for understanding structure-property relationships. Thin films and coatings. Nanostructures and ion implantation.