Impinging Performance of High-Pressure Water Jets Emitting from Different Nozzle Orifice Shapes
The impinging pressure of a water jet is a key factor in engineering applications, and the jet shape has a great influence on this pressure. In this paper, five different nozzle shapes were designed, and impacting tests were conducted based on a self-designed experimental platform using a PVDF piezo...
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| Format: | Article |
| Language: | English |
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Wiley
2020-01-01
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| Series: | Geofluids |
| Online Access: | http://dx.doi.org/10.1155/2020/8831544 |
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| author | Fei Huang Jianyu Mi Dan Li Rongrong Wang |
| author_facet | Fei Huang Jianyu Mi Dan Li Rongrong Wang |
| author_sort | Fei Huang |
| collection | DOAJ |
| description | The impinging pressure of a water jet is a key factor in engineering applications, and the jet shape has a great influence on this pressure. In this paper, five different nozzle shapes were designed, and impacting tests were conducted based on a self-designed experimental platform using a PVDF piezoelectric film sensor and a high-speed camera to record the impacting data. Additionally, the computational fluid dynamics (CFD) method was also applied to study the velocity distribution. The results show that the pressure profiles of different water jet shapes impacting onto a solid surface present a consistent pattern, namely, an initial transient and enormous peak pressure and then a longer and smaller stagnation pressure. Although the stagnation pressure in this paper is not sufficiently obvious, the peak pressures of the five water jet shapes are much different from one another. Under the same inlet pressure, the peak pressure of the circular water jet is the largest, and those of the square, triangular, cross-shaped, and elliptical water jets decrease in turn. The flowing regimes captured by the high-speed camera together with the CFD simulation results indicate that the discrepancy in the peak pressure may be a combined action of the liquid velocities and jet head shapes. |
| format | Article |
| id | doaj-art-65454ffb39454570a0f66056a48a79fb |
| institution | Kabale University |
| issn | 1468-8115 1468-8123 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geofluids |
| spelling | doaj-art-65454ffb39454570a0f66056a48a79fb2025-02-03T01:03:40ZengWileyGeofluids1468-81151468-81232020-01-01202010.1155/2020/88315448831544Impinging Performance of High-Pressure Water Jets Emitting from Different Nozzle Orifice ShapesFei Huang0Jianyu Mi1Dan Li2Rongrong Wang3Work Safety Key Lab on Prevention and Control of Gas and Roof Disasters for Southern Coal Mines, Hunan University of Science and Technology, Xiangtan, 411201 Hunan Province, ChinaSchool of Resource Environment and Safety Engineering, Hunan University of Science and Technology, Xiangtan, 411201 Hunan Province, ChinaSchool of Resource Environment and Safety Engineering, Hunan University of Science and Technology, Xiangtan, 411201 Hunan Province, ChinaSchool of Resource Environment and Safety Engineering, Hunan University of Science and Technology, Xiangtan, 411201 Hunan Province, ChinaThe impinging pressure of a water jet is a key factor in engineering applications, and the jet shape has a great influence on this pressure. In this paper, five different nozzle shapes were designed, and impacting tests were conducted based on a self-designed experimental platform using a PVDF piezoelectric film sensor and a high-speed camera to record the impacting data. Additionally, the computational fluid dynamics (CFD) method was also applied to study the velocity distribution. The results show that the pressure profiles of different water jet shapes impacting onto a solid surface present a consistent pattern, namely, an initial transient and enormous peak pressure and then a longer and smaller stagnation pressure. Although the stagnation pressure in this paper is not sufficiently obvious, the peak pressures of the five water jet shapes are much different from one another. Under the same inlet pressure, the peak pressure of the circular water jet is the largest, and those of the square, triangular, cross-shaped, and elliptical water jets decrease in turn. The flowing regimes captured by the high-speed camera together with the CFD simulation results indicate that the discrepancy in the peak pressure may be a combined action of the liquid velocities and jet head shapes.http://dx.doi.org/10.1155/2020/8831544 |
| spellingShingle | Fei Huang Jianyu Mi Dan Li Rongrong Wang Impinging Performance of High-Pressure Water Jets Emitting from Different Nozzle Orifice Shapes Geofluids |
| title | Impinging Performance of High-Pressure Water Jets Emitting from Different Nozzle Orifice Shapes |
| title_full | Impinging Performance of High-Pressure Water Jets Emitting from Different Nozzle Orifice Shapes |
| title_fullStr | Impinging Performance of High-Pressure Water Jets Emitting from Different Nozzle Orifice Shapes |
| title_full_unstemmed | Impinging Performance of High-Pressure Water Jets Emitting from Different Nozzle Orifice Shapes |
| title_short | Impinging Performance of High-Pressure Water Jets Emitting from Different Nozzle Orifice Shapes |
| title_sort | impinging performance of high pressure water jets emitting from different nozzle orifice shapes |
| url | http://dx.doi.org/10.1155/2020/8831544 |
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