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Hydraulic Performance and Energy Dissipation Mechanism Analysis of the Tesla-Shaped Emitter

Author

Listed:
  • Peisen Du

    (College of Water Resources Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China)

  • Zhiqin Li

    (College of Water Resources Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China)

  • Ruixia Hao

    (College of Water Resources Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China)

  • Juanjuan Ma

    (College of Water Resources Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China)

  • Da Yan

    (College of Water Resources Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China)

Abstract

In this paper, a tesla-shaped emitter is proposed based on the structure of the “tesla valve” as the source of inspiration, so that the water flow in the channel would produce a variety of energy dissipation phenomena, such as diversion, hedging, and mixing, to explore the hydraulic performance and energy dissipation mechanism of the tesla-shaped emitter. The channel structure parameters were taken as factors, and 16 groups of orthogonal tests were arranged. Based on CFD technology, the pressure–flow relationship curve slope, flow ratio between the main channel and secondary channel, flow field, and head loss of the emitter were calculated and analyzed for different combinations of structural parameters. Based on a significance level α = 0.05 test, the main channel inlet section length (L 3 ) had a significant impact on the curve slope, and the secondary channel length (L 1 ) and main channel inlet section length (L 3 ) had a significant impact on the flow. The multiple linear regression mathematical models between the channel structure parameters and the curve slope and the flow were constructed. The larger the ratio between the main channel and the secondary channel flow, the better the hydraulic performance of the emitter. The channel unit loss coefficient increased linearly with the increase of the emitter inlet pressure, and its value ranged from 4.5769 to 8.1716, with an excellent energy dissipation effect. The hedge mixing of the water flow was the core of the energy dissipation of the tesla-shaped emitter. By appropriately increasing the inlet size of the main channel and other elements to increase the main channel flow and optimize the flow ratio between the main channel and the secondary channel, the mixing was improved, which consequently improved the hydraulic performance of the emitter.

Suggested Citation

  • Peisen Du & Zhiqin Li & Ruixia Hao & Juanjuan Ma & Da Yan, 2023. "Hydraulic Performance and Energy Dissipation Mechanism Analysis of the Tesla-Shaped Emitter," Energies, MDPI, vol. 16(14), pages 1-17, July.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:14:p:5375-:d:1194212
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    References listed on IDEAS

    as
    1. Chaoxi Li & Zhiqin Li & Peisen Du & Juanjuan Ma & Simin Li, 2023. "Mechanism Analysis of the Influence of Structural Parameters on the Hydraulic Performance of the Novel Y-Shaped Emitter," Agriculture, MDPI, vol. 13(6), pages 1-17, May.
    2. Xinhao Wu & Peilan Su & Jianhua Wu & Yusheng Zhang & Baohe Wang, 2022. "Research on the Relationship between Sediment Concentration and Centrifugal Pump Performance Parameters Based on CFD Mixture Model," Energies, MDPI, vol. 15(19), pages 1-19, October.
    3. Peisen Du & Zhiqin Li & Cuncai Wang & Juanjuan Ma, 2022. "Analysis of the Influence of the Channel Layout and Size on the Hydraulic Performance of Emitters," Agriculture, MDPI, vol. 12(4), pages 1-13, April.
    4. Cuncai Wang & Zhiqin Li & Juanjuan Ma, 2021. "Influence of Emitter Structure on Its Hydraulic Performance Based on the Vortex," Agriculture, MDPI, vol. 11(6), pages 1-12, May.
    Full references (including those not matched with items on IDEAS)

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