Pneumatic rotary nozzle structure optimization design and airflow characteristics analysis

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2023-08-01 DOI:10.1177/16878132231195016

Pengyu Wang, Wenlong Yang

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引用次数: 1

Abstract

In this paper, the impact jet field between the pneumatic nozzle and the workpiece surface is simulated by the computational fluid dynamics method, and the influence law of the nozzle structure parameters on the jet performance is obtained by combining the response surface method (RSM), so as to improve the dust removal effect of the pneumatic nozzle. Firstly, the nozzle impact jet field calculation model was established, and the experimental platform of wind speed and volume measurement was built to verify the accuracy of the numerical calculation model and to simulate and analyze the jet field distribution characteristics of the nozzle under rotating working conditions. Then combined with the Box-Behnken Design (BBD) method, a response surface regression model with nozzle inlet radius (R1), cylindrical section length (L), and cone angle (A) as design variables and nozzle jet fixed point (20 mm) flow rate as the target variable was established to find the optimal combination of nozzle characteristics parameters. The results show that the optimized nozzle characteristics parameters using RSM can effectively improve the nozzle jet performance, the optimized jet flow rate increased by 8.38%, and can be more effective in dust removal; jet pressure on the workpiece surface decreases as the nozzle incidence angle increases; in the speed range of 400–1200 r/min, the pressure change caused by the jet on the wall surface is small, and the flow rate is relatively stable.

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气动旋转喷嘴结构优化设计及气流特性分析

本文采用计算流体动力学方法对气动喷嘴与工件表面之间的冲击射流场进行模拟，结合响应面法(RSM)得到喷嘴结构参数对射流性能的影响规律，从而提高气动喷嘴的除尘效果。首先，建立喷嘴冲击射流场计算模型，搭建风速与体积测量实验平台，验证数值计算模型的准确性，仿真分析喷嘴旋转工况下射流场分布特性;然后结合Box-Behnken Design (BBD)方法，建立以喷嘴进口半径R1、圆柱截面长度L、锥角a为设计变量，喷嘴射流定点流量20 mm为目标变量的响应面回归模型，寻找喷嘴特性参数的最优组合。结果表明:采用RSM优化后的喷嘴特性参数能有效提高喷嘴的射流性能，优化后的射流流量提高了8.38%，除尘效果更好;随着喷嘴入射角的增大，工件表面的射流压力减小;在400-1200 r/min转速范围内，射流对壁面造成的压力变化较小，流量相对稳定。

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

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.