Influence of Emitter Structure on Its Hydraulic Performance Based on the Vortex
The rectangular labyrinth emitter is taken as the study object in this article, as we added internal teeth to vortex-free and vortex areas in its lateral channel or lengthened the vertical channel, to change the channel structure. Using the computational fluid dynamics (CFD) method simulates the wat...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-05-01
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| Series: | Agriculture |
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| Online Access: | https://www.mdpi.com/2077-0472/11/6/508 |
| _version_ | 1827691053767983104 |
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| author | Cuncai Wang Zhiqin Li Juanjuan Ma |
| author_facet | Cuncai Wang Zhiqin Li Juanjuan Ma |
| author_sort | Cuncai Wang |
| collection | DOAJ |
| description | The rectangular labyrinth emitter is taken as the study object in this article, as we added internal teeth to vortex-free and vortex areas in its lateral channel or lengthened the vertical channel, to change the channel structure. Using the computational fluid dynamics (CFD) method simulates the water flow field, to get the relationship between flow rate and pressure, and the vortexes distribution in channel. The aim of this study is to explore the reasons for the influence of structural change on hydraulic performance of the emitter through the analysis of vortex intensity and its distribution from the perspective of the vortex. The results show that the relative error of simulated results and experimental data was 1.02–2.11%. Adding internal teeth to vortex-free areas in lateral channel can improve hydraulic performance of the emitter; adding them to vortex areas can reduce it. The increase in vortex number and intensity in flow field is the internal reason for the improvement of the emitter’s hydraulic performance. The channel structure changes promote the formation of a larger velocity gradient, and the increase in the velocity gradient in flow field exacerbates vortex formation. Changing channel structure to improve the emitter’s hydraulic performance can promote an increase in the number and intensity of vortexes in the channel. |
| first_indexed | 2024-03-10T10:52:46Z |
| format | Article |
| id | doaj.art-85a321424ca049c392176c5650260ae8 |
| institution | Directory Open Access Journal |
| issn | 2077-0472 |
| language | English |
| last_indexed | 2024-03-10T10:52:46Z |
| publishDate | 2021-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Agriculture |
| spelling | doaj.art-85a321424ca049c392176c5650260ae82023-11-21T22:08:25ZengMDPI AGAgriculture2077-04722021-05-0111650810.3390/agriculture11060508Influence of Emitter Structure on Its Hydraulic Performance Based on the VortexCuncai Wang0Zhiqin Li1Juanjuan Ma2School of Water Resources Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, ChinaSchool of Water Resources Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, ChinaSchool of Water Resources Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, ChinaThe rectangular labyrinth emitter is taken as the study object in this article, as we added internal teeth to vortex-free and vortex areas in its lateral channel or lengthened the vertical channel, to change the channel structure. Using the computational fluid dynamics (CFD) method simulates the water flow field, to get the relationship between flow rate and pressure, and the vortexes distribution in channel. The aim of this study is to explore the reasons for the influence of structural change on hydraulic performance of the emitter through the analysis of vortex intensity and its distribution from the perspective of the vortex. The results show that the relative error of simulated results and experimental data was 1.02–2.11%. Adding internal teeth to vortex-free areas in lateral channel can improve hydraulic performance of the emitter; adding them to vortex areas can reduce it. The increase in vortex number and intensity in flow field is the internal reason for the improvement of the emitter’s hydraulic performance. The channel structure changes promote the formation of a larger velocity gradient, and the increase in the velocity gradient in flow field exacerbates vortex formation. Changing channel structure to improve the emitter’s hydraulic performance can promote an increase in the number and intensity of vortexes in the channel.https://www.mdpi.com/2077-0472/11/6/508labyrinth emitterchannel structurevortexhydraulic performanceCFD simulation |
| spellingShingle | Cuncai Wang Zhiqin Li Juanjuan Ma Influence of Emitter Structure on Its Hydraulic Performance Based on the Vortex Agriculture labyrinth emitter channel structure vortex hydraulic performance CFD simulation |
| title | Influence of Emitter Structure on Its Hydraulic Performance Based on the Vortex |
| title_full | Influence of Emitter Structure on Its Hydraulic Performance Based on the Vortex |
| title_fullStr | Influence of Emitter Structure on Its Hydraulic Performance Based on the Vortex |
| title_full_unstemmed | Influence of Emitter Structure on Its Hydraulic Performance Based on the Vortex |
| title_short | Influence of Emitter Structure on Its Hydraulic Performance Based on the Vortex |
| title_sort | influence of emitter structure on its hydraulic performance based on the vortex |
| topic | labyrinth emitter channel structure vortex hydraulic performance CFD simulation |
| url | https://www.mdpi.com/2077-0472/11/6/508 |
| work_keys_str_mv | AT cuncaiwang influenceofemitterstructureonitshydraulicperformancebasedonthevortex AT zhiqinli influenceofemitterstructureonitshydraulicperformancebasedonthevortex AT juanjuanma influenceofemitterstructureonitshydraulicperformancebasedonthevortex |