| Cite this article: | 陶娟琴,陶洪飞,李巧,等.单翼迷宫式滴灌带进出水口数、梯形流道齿数对抗堵塞性能的影响[J].灌溉排水学报,0,():-. |
| TAO Juanqin,TAO Hongfei,LI Qiao,et al.单翼迷宫式滴灌带进出水口数、梯形流道齿数对抗堵塞性能的影响[J].灌溉排水学报,0,():-. |
|
| |
|
|
| This article has been：Browse 775Times Download 0Times |
|
|
|
| DOI： |
|
| Effects of the Number of Inlet and Outlet Ports and Trapezoidal Channel Teeth on the Anti-clogging Performance of a Single-wing Labyrinth Drip Irrigation Belt |
|
TAO Juanqin, TAO Hongfei, LI Qiao, LIU Yao, ZHANG Hui, MA Hemujiang.Aihemat, Youwei Jiang, Wenxin Yang
|
|
School of Water Conservancy and Civil Engineering,Xinjiang Agricultural University
|
| Abstract: |
| 【Objective】In order to study the effects of the number of water inlets, the number of teeth of the trapezoidal flow channel and the number of outlets on the anti-clogging performance of the single-wing labyrinth drip irrigation belt, nine groups of working conditions were designed for numerical simulation.【Method】Physical experiments, numerical simulations, linear mathematical models and other methods were used to study the two-phase flow field of water and sand in a single-wing labyrinth drip irrigation belt with a rated flow rate of 1.8 L/h, as well as the influence of different inlet and outlet numbers and trapezoidal flow channel teeth on the flow index and flow coefficient of the drip irrigation belt.【Result】The SST k-ω two-equation low Reynolds number turbulence model is more suitable for the numerical simulation of the flow field of the single-wing labyrinth drip irrigation belt; from the inlet to the trapezoidal channel and then to the outlet, the sediment concentration gradually decreases; the fifth water inlet of drip irrigation belt is the main water inlet, and the third water outlet is the main water outlet; the number of water inlets, trapezoidal channel teeth, and number of water outlets have a minimal impact on the flow regime index, and the significance order of their impact on the flow coefficient is trapezoidal channel teeth>number of water outlets>number of water inlets; a multivariate linear model between the flow coefficient and the three factors was constructed, with a decision coefficient of 0.987 and good accuracy.【Conclusion】When the size of the trapezoidal labyrinth flow path is the same, the smaller the number of teeth in the trapezoidal flow path, the greater the internal flow velocity in the flow path, which is more conducive to the discharge of sediment particles from the flow path. The constructed flow coefficient and three factor formula can achieve accurate irrigation of plants at the outlet location, making reasonable use of land resources. |
| Key words: single-wing labyrinth drip irrigation belt; SST k-ω turbulence model; the two-phase flow of water and sand; number of water inlets; trapezoidal channel teeth; number of water outlets |
|
|
|
|
|
|
