Optimization design and experiments on the self-excited pulsed nozzle

ABSTRACT

The performance of the water jet nozzle affects the water energy consumption in practical application. In this study, the response surface method was used in order to increase performances of the self-excited pulsed nozzle. The left and right wall inclination angle, the lower wall inclination angle and the inlet hole distance were selected as the impact factors on the jet impact force, pulse frequency and cleaning rate. Optimal value ranges of the left and right wall inclination angle, lower wall inclination angle and inlet hole distance were 19°–21°, 9°–13°, and 7.2 mm–7.6 mm, respectively. The optimized self-excited pulsed nozzle was tested for the comparison with the original one, indicating that the jet impact force, pulse main frequency and cleaning rate of the optimized nozzle were increased by 14.0%, 38.1%, and 20%, respectively. It was also obtained that the decline degree of jet performance of the optimized nozzle with the increase of the spraying distance was decreased by 20% and the cleaning time was also reduced by 20%, which would reduce water energy consumption largely. This paper may provide a reference for optimization and energy saving in the application of the self-excited pulsed nozzle.

KEYWORDS:

• Self-excited pulsed nozzle
• structural optimization
• performance experiments
• response surface method
• water energy saving

Acknowledgments

The authors would like to thank the support by the National Natural Science Foundation of China (51779106 and 51979126), a project funded by the Priority Academic Programme Development of Jiangsu Higher Education Institutions.

Availability of Data and Material

All data, models and code generated or used during the study appear in the submitted article.

Disclosure statement

No potential conflict of interest was reported by the author(s).

Author’s contributions

All authors participated in the design optimization, performed the experiments and analyzed the results. All authors have given approval for the final version of the manuscript.

Additional information

Funding

This work was supported by the National Natural Science Foundation of China [51779106, 51979126].

Notes on contributors

Houlin Liu

Houlin Liu: He is a Professor in the Research Center of Fluid Machinery Engineering and Technology, Jiangsu University, China. He has published over 100 papers in the national and international journals and been authorized more than 40 invention patents.

Yanhong Mao

Yanhong Mao: She is a Ph.D student in the Research Center of Fluid Machinery Engineering and Technology, Jiangsu University, China, majoring in fluid machinery.

Yong Wang

Yong Wang: He is a Professor in the Research Center of Fluid Machinery Engineering and Technology, Jiangsu University, China. He has published over 50 papers in the national and international journals and been authorized more than 20 invention patents.

Zhaoliang Zhang

Zhaoliang Zhang: He has received his master’s degree from the Research Center of Fluid Machinery Engineering and Technology, Jiangsu University, China in 2021. His major is fluid machinery.