Next Article in Journal
Hydropower Future: Between Climate Change, Renewable Deployment, Carbon and Fuel Prices
Next Article in Special Issue
Estimating Changes in the Green Water Productivity of Cropping Systems in Northern Shaanxi Province in China’s Loess Plateau
Previous Article in Journal
Quantification of Daily Water Requirements of Container-Grown Calathea and Stromanthe Produced in a Shaded Greenhouse
Previous Article in Special Issue
Low Water Productivity for Rice in Bihar, India—A Critical Analysis
Article Menu

Export Article

Open AccessArticle
Water 2018, 10(9), 1196; https://doi.org/10.3390/w10091196

Numerical Simulation of Gate Control for Unsteady Irrigation Flow to Improve Water Use Efficiency in Farming

1
College of Water Resources & Civil Engineering, China Agricultural University, 17 Tsinghua East Rd., Haidian District, Beijing 100083, China
2
College of Water Sciences, Beijing Normal University, 19 XinJieKouWai St, Haidian District, Beijing 100875, China
3
College of Engineering, China Agricultural University, 17 Tsinghua East Rd., Haidian District, Beijing 100083, China
*
Authors to whom correspondence should be addressed.
Received: 23 June 2018 / Revised: 3 September 2018 / Accepted: 3 September 2018 / Published: 5 September 2018
(This article belongs to the Special Issue Advances in Agriculture Water Efficiency)
Full-Text   |   PDF [2093 KB, uploaded 5 September 2018]   |  

Abstract

In the case of irrigation, to implement the water distribution plan, the flow needs to be changed through the gate which leads to the occurrence of unavoidable unsteady flow. In order to improve the level of irrigation management, it is necessary to understand the changes taking place in the canal water flow during the process of water distribution. The de Saint-Venant equations were solved based on the method of characteristics and a model was built to simulate the unsteady flow in the channel of the Yintang irrigation district. Then, the obtained results were validated by the employed model. On the basis of simulation results, a model for the variations in the gate opening was established based on the theory of under-gate discharge. In this study, the simulation results, as established from the model, are very consistent with the simulation results of existing commercial software and a simple design for the operation was conducted from the adjustment of gate openings and multi-stage gate operation modes. Overall, the established gate control model built in this study is reliable, which provides a basis for the decision-making process for the relevant staff. View Full-Text
Keywords: unsteady flow; de Saint-Venant equations; irrigation management; gate control unsteady flow; de Saint-Venant equations; irrigation management; gate control
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Fang, T.; Gu, Y.; He, X.; Liu, X.; Han, Y.; Chen, J. Numerical Simulation of Gate Control for Unsteady Irrigation Flow to Improve Water Use Efficiency in Farming. Water 2018, 10, 1196.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Water EISSN 2073-4441 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top