Advertisement

Design Method for Chemical Clogging Emitters Boundary Optimization

  • Xu Li
  • Peiling YangEmail author
  • Shumei Ren
  • Lili Zhangzhong
  • Lihong Yang
Conference paper
Part of the IFIP Advances in Information and Communication Technology book series (IFIPAICT, volume 509)

Abstract

Fractal flow channel structure as research object, based on chemical clogging condition of the physical model. It was analyzed using computational fluid dynamics (CFD) simulation and reveals the fractal flow channel internal flow characteristics of water and sediment. Fractal flow channel non-energy dissipation of the arc angle design optimization. Using standard κ-ε turbulence model and the DPM model, calculated: (1) As for the hydraulic performance analysis, before optimization emitter flow exponent of 0.487, 0.489 after optimization; From the inner flow field analysis, When the pressure head from 5 m to 15 m, before optimization emitter maximum flow rate from 2.09 m/s to 3.70 m/s, the maximum flow rate to optimize the emitter from 2.15 m/s to 3.81 m/s, the maximum optimization of flow rates were increased compared to the previous 2.87%, 3.34%, 2.97%, the flow rate improved. After optimizing the eddy region, the velocity of the outer edge of the eddy region increased from (0.005–0.752 m/s) to (0.311–0.930 m/s), which improved the self-cleaning ability of the irrigator. Based on the analysis of blockage performance, the passing rate of particles is significantly improved after optimizing the flow channel. Considering the optimized emitter has excellent hydraulic performance and anti-clogging properties.

Keywords

Fractal runner Hydraulic performance Anti-clogging properties Numerical simulation Structural optimization 

Notes

Acknowledgment

Funds for this research was provided by the Water Drip Irrigation and Efficient Water-saving Irrigation Area of Key Technology Research and Demonstration ([2014] 117).

References

  1. 1.
    Localized irrigation-design, installation, operation, evaluation. Food and Agriculture Organization of the United Nations, Rome (1980)Google Scholar
  2. 2.
    de Kreij, C., van der Burg, A.M.M., Runia, W.T.: Drip irrigation emitter clogging in Dutch greenhouses as affected by methane and organic acids. Agric. Water Manag. 60(2), 73–85 (2003)CrossRefGoogle Scholar
  3. 3.
    Wang, S., Liu, X., Xi, G., et al.: Agricultural irrigation analysis in Labyrinth Emitter Flow Characteristics. Trans. Chin. Soc. Agric. Eng. (2000)Google Scholar
  4. 4.
    Luo, J.: Theory and Technology for Water-Saving Irrigation. Wuhan University Press, Wuhan (2003)Google Scholar
  5. 5.
    Zhao, W.: The key technology of drip irrigation system. Rev. China Agric. Sci. Technol. 9(1), 21–25 (2007)Google Scholar
  6. 6.
    Qian, Y., Li, Y., Yang, G., et al.: Saving Agriculture New Technology, vol. 12, pp. 8–108. Yellow River Conservancy Press (2002)Google Scholar
  7. 7.
    Jin, H., Li, G.: Abroad overseas trends water-saving irrigation technology and equipment - United States 24th International Irrigation Show impressions, 46–48 (2004)Google Scholar
  8. 8.
    Xu, P.: Status and prospects of micro-irrigation technology and equipment market analysis (1), 33–36 (2002)Google Scholar
  9. 9.
    Wei, Z., Zhao, W., Tang, Y., et al.: Anti-clogging design method for the labyrinth channels of drip irrigation emitters. Trans. Chin. Soc. Agric. Eng. 21(6), 1–7 (2005)Google Scholar
  10. 10.
    Wei, Z., Tang, Y., Wen, J., et al.: Two-phase flow analysis ans experimental investigation of micro-PIV and anti-clogging for micro-channels of emitter. Trans. Chin. Soc. Agric. Eng. (Trans. CSAE) 24(6), 1–9 (2008)Google Scholar
  11. 11.
    Li, Y., Yang, P., Ren, S., et al.: Cylindrical emitter labyrinth flow channel internal fluid flow analysis and numerical simulation. Hydrodyn. Res. Dev. Ser. A 20(6), 736–743 (2005)Google Scholar
  12. 12.
    Yan, D., Yang, P., Ren, S.: Study on dynamic analysis of particle movement in drip emitter based on CFD. Trans. Chin. Soc. Agric. Mach. 38(6), 71–74 (2007)Google Scholar
  13. 13.
    Zhang, J.: Evaluation of Hydraulic and Anti-clogging Performance and Structural Optimization of Labyrinth-Channel Emitters. Xi’an Jiaotong University, Xi’an (2009)Google Scholar
  14. 14.
    Li, Y.: Experimental research and numerical simulation of flow channel-shaped design and flow characteristics of the emitter points. College of Water Resource and Civil Engineering, China Agricualtural Univerity, Beijing (2005)Google Scholar
  15. 15.
    Glaad, Y.G., Klous, L.Z.: Hydraulic and mechanical properties of drippers of drippers. In: Proceedings of the and International Drip Irrigation Congress, 7–14 July 1998Google Scholar
  16. 16.
    Han, Q., Zhao, W., Ding, Y.: Situation with drip emitter and analysis. (1), 17–18 (2003)Google Scholar
  17. 17.
    Wei, Z.: Structural design and rapid development of labyrinth drip irrigation emitters. Xi’an Jiaotong University, Xi’an (2003)Google Scholar

Copyright information

© IFIP International Federation for Information Processing 2019

Authors and Affiliations

  • Xu Li
    • 1
  • Peiling Yang
    • 1
    Email author
  • Shumei Ren
    • 1
  • Lili Zhangzhong
    • 2
  • Lihong Yang
    • 3
  1. 1.College of Water Resources and Civil EngineeringChina Agricultural UniversityBeijingChina
  2. 2.China National Engineering Research Center for Information Technology in AgricultureBeijingChina
  3. 3.Yunnan Academy of Scientific and Technical InformationKunmingChina

Personalised recommendations