Abstract

In order to improve the performance of emitter, the extenics theory is introduced, whose divergent thinking is used to resolve the conflict of anti-clogging and energy dissipation and a new structure is proposed. The wide triangular areas are designed to reduce the flow rate behind of the each orifice and be easy to precipitation of impurities. The orifices are set to gradually decrease water kinetic energy and the flow channel is designed to be dismantle. The numerical simulation technology is used to analyze the internal flow field of emitter, the flow field results show that the improved emitter has great effect of energy dissipation and anti-clogging. As the same time, the structure of emitter is optimized and L1 = 31 mm, L2 = 21 mm, L3 = 8 mm and L4 = 5 mm are the optimization size values.

Keywords:

Anti-clogging, emitter, numerical simulation, structure optimization, the extenics,

References

1. Adin, A. and M. Sacks, 1991. Dripper clogging factors in waste water irrigation. J. Irrig. Drain. E-ASCE, 117: 813-826.
   
2. Cai, W., 1983. Extension set and non-compatible problems [J]. J. Sci. Explor., 1: 83-97.
   
3. Jiang, F., C.M. Huang and Z.W. Liang, 2009. Numerical simulation of rotating-cage bio-reactor based on dynamic mesh coupled two-phase flow. Proceeding of the 2nd International Conference on High Performance Computing and Applications (ICHPCA, 2009), pp: 206-211.
   
4. Jiang, F., C.M. Huang, J.H. Xiang and Y.J. Wang, 2011. Design and optimization of drip irrigation emitters using directly of sewage. Proceeding of the 6th International Conference on Computer Science and Education (ICCSE, 2011), pp: 483- 488.
   
5. Liu, H.S., Y.K. Li, Y.Z. Liu, P.L. Yang, S.M. Ren, R.J. Wei and H.B. Xu, 2009. Flow characteristics in energy dissipation units of labyrinth path in the drip irrigation emitters with DPIV technology. J. Hydrodynam., 21(6): 137-145.
   
6. Wei, Q.S., G. Lu, J. Liu, Y.S. Shi, W.C. Dong and S.H. Huang, 2008. Evaluations of emitter clogging in drip irrigation by two-phase flow simulations and laboratory experiments. Comput. Electron. Agr., 63: 294-303.
   CrossRef    
7. Wu, F., Y.S. Fan, H. Li, Z.X. Guo, J.S. Li and W.C. Li, 2004. Clogging of emitter in subsurface drip irrigation system. T. CSAE, 20: 80-83.
   
8. Yan, D., Z.H. Bai, R. Mike, L.K. Gu, S.M. Ren and P.L. Yang, 2009. Biofilm structure and its influence on clogging in drip irrigation emitters distributing reclaimed wastewater. J. Environ. Sci., 21: 834-841.
   CrossRef    
9. Zhang, J., W.H. Zhao, Y.P. Tang and B.H. Lu, 2010. Anti-clogging performance evaluation and parameterized design of emitters with labyrinth channels. Comput. Electron. Agr., 74: 59-65.
   CrossRef    

Competing interests

The authors have no competing interests.

Open Access Policy

This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

Copyright

The authors have no competing interests.