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首页> 外文会议>Effective Utilization of Agricultural Soil amp; Water Resources and Protection of Environment >Liquid-solid Two-phase Flow through Labyrinth Emitter of Drip Irrigation
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Liquid-solid Two-phase Flow through Labyrinth Emitter of Drip Irrigation

机译：流经滴灌迷宫式发射器的液固两相流

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摘要

The labyrinth emitter has micro-size and complex structure.The irrigation water still includes suspend granules after filtration.It is necessary to study the granule distribution in emitter.The CFD approach is introduced into the liquid-solid two-phase flow simulation in emitter in this paper.An Eulerian model of multiphase approach is used to model the water/sand granule flow.Under working pressure and same inlet volume fraction (concentration),the granule concentration distributions of different granule's size are simulated.The flow fields of pressure and velocity are carried out,and the effect of granule's size on the granule distribution is analyzed.For the studying emitter,the granule distribution is uniform and closes to the inlet concentration when the granule's size is less than 0.01mm.When the granule's size is bigger than 0.02mm,its concentration is increased at inlet,store and the corner of labyrinth channel.This phenomenon increases with the granule's size increasing.
机译：迷宫式发射器的尺寸很小，结构复杂。过滤后的灌溉水仍含有悬浮颗粒。有必要研究发射器中颗粒的分布情况。将CFD方法引入到发射器的液固两相流模拟中。本文采用多阶段方法的欧拉模型对水/砂粒的流动进行建模。在工作压力和相同进口体积分数（浓度）下，模拟了不同粒径颗粒的浓度分布。压力和速度流场对于所研究的发射器，当颗粒尺寸小于0.01mm时，颗粒分布均匀且接近进口浓度。当颗粒尺寸大于0.01mm时，颗粒分布均匀。 0.02mm，其浓度在入口，储存和迷宫通道的拐角处增加。这种现象随着颗粒尺寸的增加而增加。

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