Performance Comparison of Four Waterjet Nozzles |
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| Authors: | Z. W. Zhong Z. Z. Han |
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| Affiliation: | a School of Mechanical and Production Engineering, Nanyang Technological University, Singapore, Republic of Singaporeb Singapore Institute of Manufacturing Technology, Singapore, Republic of Singapore |
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| Abstract: | This article presents the results of laboratory tests on four waterjet-cleaning nozzles for industrial use. The nozzles selected for the tests included standard cone-jet and fan-jet nozzles, a cavitating jet nozzle and a resonating jet nozzle. A series of cleaning and erosion tests were conducted to compare the performance of the nozzles in terms of erosion rates and jet coverage, based on the same amount of energy input. The fan-jet nozzle was extremely sensitive to small variations in standoff distance. The cavitating jet nozzle gave similar performance over a large range in standoff distance. The cavitating jet and fan-jet nozzles were more efficient at an angle of incidence of 0° and 40°, respectively. For the same settings, the cone-jet and resonating jet nozzles gave an overall poorer performance than the fan-jet and cavitating jet nozzles. The cavitating jet nozzle exhibited even better erosion rate, erosion depth, and footprint covered than the fan-jet nozzle. |
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| Keywords: | Waterjet Cleaning Nozzles Operating conditions Erosion rates Cone-jet Fan-jet Cavitating jet Resonating jet Jet coverage Standoff distance Water pressure Erosion footprint Angle of incidence Cost |
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