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Advances in Materials Science and Engineering
Volume 2015 (2015), Article ID 732054, 8 pages
http://dx.doi.org/10.1155/2015/732054
Research Article

Structure Optimization and Numerical Simulation of Nozzle for High Pressure Water Jetting

1School of Mechanical Engineering and Automation, Dalian Polytechnic University, Dalian 116034, China
2National Engineering Research Center of Seafood, Dalian 116034, China
3Dalian Modern Auxiliary Machines Development and Manufacturing Co., Ltd., Dalian 116600, China

Received 4 November 2014; Revised 17 January 2015; Accepted 27 January 2015

Academic Editor: Marjan Bahraminasab

Copyright © 2015 Shuce Zhang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Three kinds of nozzles normally used in industrial production are numerically simulated, and the structure of nozzle with the best jetting performance out of the three nozzles is optimized. The R90 nozzle displays the most optimal jetting properties, including the smooth transition of the nozzle’s inner surface. Simulation results of all sample nozzles in this study show that the helix nozzle ultimately displays the best jetting performance. Jetting velocity magnitude along and coordinates is not symmetrical for the helix nozzle. Compared to simply changing the jetting angle, revolving the jet issued from the helix nozzle creates a grinding wheel on the cleaning surface, which makes not only an impact effect but also a shearing action on the cleaning object. This particular shearing action improves the cleaning process overall and forms a wider, effective cleaning range, thus obtaining a broader jet width.