Effect of Nozzle Outlet Type on the Flow Field Velocity and Impact Pressure of High-Pressure Water Jet PeeningSource: Journal of Fluids Engineering:;2022:;volume( 144 ):;issue: 007::page 71201-1DOI: 10.1115/1.4053446Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Water jet peening can effectively improve the fatigue strength of metal materials, and the outlet shape of nozzle greatly affects the effect of water jet peening. In this paper, the effects of nozzle outlet shape on water jet velocity and impact pressure are studied by numerical simulation, and the jet velocity and dynamic pressure for different standoff distances are also discussed. The results show that the water jets of square, circular, and triangular nozzles are highly concentrated, and the water jet of elliptical nozzles is the most divergent. The axial velocity attenuation of the square nozzle along the axis is slower than that of the other three nozzles. The water axial velocity of the elliptical nozzle attenuates fastest, and the length of the core segment of the water jet is the smallest. Within a certain axial distance, the dynamic pressure area in the central area of the elliptical water jet is obviously larger than that of the other three nozzles, and the effective treatment range is large, which is more suitable for the welding surface strengthening operation.
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| contributor author | Zheng, Hong-Xiang | |
| contributor author | Luo, Yun | |
| contributor author | Zang, Jing-Yu | |
| contributor author | Zhang, Qian | |
| date accessioned | 2022-05-08T09:11:36Z | |
| date available | 2022-05-08T09:11:36Z | |
| date copyright | 2/17/2022 12:00:00 AM | |
| date issued | 2022 | |
| identifier issn | 0098-2202 | |
| identifier other | fe_144_07_071201.pdf | |
| identifier uri | http://yetl.yabesh.ir/yetl1/handle/yetl/4284838 | |
| description abstract | Water jet peening can effectively improve the fatigue strength of metal materials, and the outlet shape of nozzle greatly affects the effect of water jet peening. In this paper, the effects of nozzle outlet shape on water jet velocity and impact pressure are studied by numerical simulation, and the jet velocity and dynamic pressure for different standoff distances are also discussed. The results show that the water jets of square, circular, and triangular nozzles are highly concentrated, and the water jet of elliptical nozzles is the most divergent. The axial velocity attenuation of the square nozzle along the axis is slower than that of the other three nozzles. The water axial velocity of the elliptical nozzle attenuates fastest, and the length of the core segment of the water jet is the smallest. Within a certain axial distance, the dynamic pressure area in the central area of the elliptical water jet is obviously larger than that of the other three nozzles, and the effective treatment range is large, which is more suitable for the welding surface strengthening operation. | |
| publisher | The American Society of Mechanical Engineers (ASME) | |
| title | Effect of Nozzle Outlet Type on the Flow Field Velocity and Impact Pressure of High-Pressure Water Jet Peening | |
| type | Journal Paper | |
| journal volume | 144 | |
| journal issue | 7 | |
| journal title | Journal of Fluids Engineering | |
| identifier doi | 10.1115/1.4053446 | |
| journal fristpage | 71201-1 | |
| journal lastpage | 71201-10 | |
| page | 10 | |
| tree | Journal of Fluids Engineering:;2022:;volume( 144 ):;issue: 007 | |
| contenttype | Fulltext |