Prediction of atomization characteristics of pressure swirl nozzle with different structures

doi:10.1016/j.cjche.2023.05.002

中国化学工程学报 ›› 2023, Vol. 63 ›› Issue (11): 171-184.DOI: 10.1016/j.cjche.2023.05.002

• Full Length Article • 上一篇下一篇

Prediction of atomization characteristics of pressure swirl nozzle with different structures

Jinfan Liu¹, Xin Feng^2,3, Hu Liang⁴, Weipeng Zhang², Yuanyuan Hui^2,3, Haohan Xu^2,3, Chao Yang^2,3

1. School of Chemical Engineering, Sichuan University, Chengdu 610065, China;
2. CAS Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China;
3. School of Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, China;
4. College of Chemical Engineering, Nanjing Tech University, Nanjing 211816, China

收稿日期:2023-02-05 修回日期:2023-05-11 出版日期:2023-11-28 发布日期:2024-01-08
通讯作者: Xin Feng,E-mail:xfeng@ipe.ac.cn
基金资助:
This work was supported by the National Key Research and Development Program (2022YFB3504000), the National Natural Science Foundation of China (22122815, 21978296), the NSFC-EU project (31961133018), and the Youth Innovation Promotion Association CAS is gratefully acknowledged.

Prediction of atomization characteristics of pressure swirl nozzle with different structures

Jinfan Liu¹, Xin Feng^2,3, Hu Liang⁴, Weipeng Zhang², Yuanyuan Hui^2,3, Haohan Xu^2,3, Chao Yang^2,3

1. School of Chemical Engineering, Sichuan University, Chengdu 610065, China;
2. CAS Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China;
3. School of Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, China;
4. College of Chemical Engineering, Nanjing Tech University, Nanjing 211816, China

Received:2023-02-05 Revised:2023-05-11 Online:2023-11-28 Published:2024-01-08
Contact: Xin Feng,E-mail:xfeng@ipe.ac.cn
Supported by:
This work was supported by the National Key Research and Development Program (2022YFB3504000), the National Natural Science Foundation of China (22122815, 21978296), the NSFC-EU project (31961133018), and the Youth Innovation Promotion Association CAS is gratefully acknowledged.

摘要/Abstract

摘要： The structure of the pressure swirl nozzle is an important factor affecting its spray performance. This work aims to study pressure swirl nozzles with different structures by experiment and simulation. In the experiment, 10 nozzles with different structures are designed to comprehensively cover various geometric factors. In terms of simulation, steady-state simulation with less computational complexity is used to study the flow inside the nozzle. The results show that the diameter of the inlet and outlet, the direction of the inlet, the diameter of the swirl chamber, and the height of the swirl chamber all affect the atomization performance, and the diameter of the inlet and outlet has a greater impact. It is found that under the same flow rate and pressure, the geometric differences do have a significant impact on the atomization characteristics, such as spray angle and SMD (Sauter mean diameter). Specific nozzle structures can be customized according to the actual needs. Data analysis shows that the spray angle is related to the swirl number, and the SMD is related to turbulent kinetic energy. Through data fitting, the equations for predicting the spray angle and the SMD are obtained. The error range of the fitting equation for the prediction of spray angle and SMD is within 15% and 10% respectively. The prediction is expected to be used in engineering to estimate the spray performance at the beginning of a real project.

关键词: Pressure swirl nozzle, Nozzle structure, Numerical simulation, Spray angle, Prediction

Abstract: The structure of the pressure swirl nozzle is an important factor affecting its spray performance. This work aims to study pressure swirl nozzles with different structures by experiment and simulation. In the experiment, 10 nozzles with different structures are designed to comprehensively cover various geometric factors. In terms of simulation, steady-state simulation with less computational complexity is used to study the flow inside the nozzle. The results show that the diameter of the inlet and outlet, the direction of the inlet, the diameter of the swirl chamber, and the height of the swirl chamber all affect the atomization performance, and the diameter of the inlet and outlet has a greater impact. It is found that under the same flow rate and pressure, the geometric differences do have a significant impact on the atomization characteristics, such as spray angle and SMD (Sauter mean diameter). Specific nozzle structures can be customized according to the actual needs. Data analysis shows that the spray angle is related to the swirl number, and the SMD is related to turbulent kinetic energy. Through data fitting, the equations for predicting the spray angle and the SMD are obtained. The error range of the fitting equation for the prediction of spray angle and SMD is within 15% and 10% respectively. The prediction is expected to be used in engineering to estimate the spray performance at the beginning of a real project.

Key words: Pressure swirl nozzle, Nozzle structure, Numerical simulation, Spray angle, Prediction

Jinfan Liu, Xin Feng, Hu Liang, Weipeng Zhang, Yuanyuan Hui, Haohan Xu, Chao Yang. Prediction of atomization characteristics of pressure swirl nozzle with different structures[J]. 中国化学工程学报, 2023, 63(11): 171-184.

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Prediction of atomization characteristics of pressure swirl nozzle with different structures

Prediction of atomization characteristics of pressure swirl nozzle with different structures

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