Experimental Investigation on the Influence of a Double-Walled Confined Width on the Velocity Field of a Submerged Waterjet
The current research on confined submerged waterjets mainly focuses on the flow field of the impinging jet and wall jet. The double-sided wall vertically confined waterjet, which is widely used in many fields such as mining, cleaning and surface strengthening, has rarely been studied so far. In orde...
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| Format: | Article |
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MDPI AG
2017-12-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/7/12/1281 |
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| author | Xiaolong Ding Yong Kang Deng Li Bo Yuan Xiaochuan Wang |
| author_facet | Xiaolong Ding Yong Kang Deng Li Bo Yuan Xiaochuan Wang |
| author_sort | Xiaolong Ding |
| collection | DOAJ |
| description | The current research on confined submerged waterjets mainly focuses on the flow field of the impinging jet and wall jet. The double-sided wall vertically confined waterjet, which is widely used in many fields such as mining, cleaning and surface strengthening, has rarely been studied so far. In order to explore the influence of a double-sided wall confined width on the velocity field of submerged waterjet, an experiment was conducted with the application of 2D particle image velocimetry (PIV) technology. The distribution of mean velocity and turbulent velocity in both horizontal and vertical planes was used to characterize the flow field under various confined widths. The results show that the vertical confinement has an obvious effect on the decay rate of the mean centerline velocity. When the confined width changes from 15 to 5, the velocity is reduced by 20%. In addition, with the decrease of the confined width, the jet has a tendency to spread horizontally. The vertically confined region induces a space hysteresis effect which changes the location of the transition region moving downstream. There are local negative pressure zones separating the fluid and the wall. This study of a double-walled confined jet provides some valuable information with respect to its mechanism and industrial application. |
| first_indexed | 2024-12-20T12:07:38Z |
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| id | doaj.art-33e5db0bd30d482c85a2ca46fd04ed0d |
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| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-12-20T12:07:38Z |
| publishDate | 2017-12-01 |
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| spelling | doaj.art-33e5db0bd30d482c85a2ca46fd04ed0d2022-12-21T19:41:21ZengMDPI AGApplied Sciences2076-34172017-12-01712128110.3390/app7121281app7121281Experimental Investigation on the Influence of a Double-Walled Confined Width on the Velocity Field of a Submerged WaterjetXiaolong Ding0Yong Kang1Deng Li2Bo Yuan3Xiaochuan Wang4School of Power and Mechanical Engineering, Wuhan University, Wuhan 430072, ChinaSchool of Power and Mechanical Engineering, Wuhan University, Wuhan 430072, ChinaSchool of Power and Mechanical Engineering, Wuhan University, Wuhan 430072, ChinaCollege of Power Engineering, Chongqing University, Chongqing 400044, ChinaSchool of Power and Mechanical Engineering, Wuhan University, Wuhan 430072, ChinaThe current research on confined submerged waterjets mainly focuses on the flow field of the impinging jet and wall jet. The double-sided wall vertically confined waterjet, which is widely used in many fields such as mining, cleaning and surface strengthening, has rarely been studied so far. In order to explore the influence of a double-sided wall confined width on the velocity field of submerged waterjet, an experiment was conducted with the application of 2D particle image velocimetry (PIV) technology. The distribution of mean velocity and turbulent velocity in both horizontal and vertical planes was used to characterize the flow field under various confined widths. The results show that the vertical confinement has an obvious effect on the decay rate of the mean centerline velocity. When the confined width changes from 15 to 5, the velocity is reduced by 20%. In addition, with the decrease of the confined width, the jet has a tendency to spread horizontally. The vertically confined region induces a space hysteresis effect which changes the location of the transition region moving downstream. There are local negative pressure zones separating the fluid and the wall. This study of a double-walled confined jet provides some valuable information with respect to its mechanism and industrial application.https://www.mdpi.com/2076-3417/7/12/1281double-side wall confinedsubmerged waterjetPIVvelocity field |
| spellingShingle | Xiaolong Ding Yong Kang Deng Li Bo Yuan Xiaochuan Wang Experimental Investigation on the Influence of a Double-Walled Confined Width on the Velocity Field of a Submerged Waterjet Applied Sciences double-side wall confined submerged waterjet PIV velocity field |
| title | Experimental Investigation on the Influence of a Double-Walled Confined Width on the Velocity Field of a Submerged Waterjet |
| title_full | Experimental Investigation on the Influence of a Double-Walled Confined Width on the Velocity Field of a Submerged Waterjet |
| title_fullStr | Experimental Investigation on the Influence of a Double-Walled Confined Width on the Velocity Field of a Submerged Waterjet |
| title_full_unstemmed | Experimental Investigation on the Influence of a Double-Walled Confined Width on the Velocity Field of a Submerged Waterjet |
| title_short | Experimental Investigation on the Influence of a Double-Walled Confined Width on the Velocity Field of a Submerged Waterjet |
| title_sort | experimental investigation on the influence of a double walled confined width on the velocity field of a submerged waterjet |
| topic | double-side wall confined submerged waterjet PIV velocity field |
| url | https://www.mdpi.com/2076-3417/7/12/1281 |
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