| 王文娥,王福军.迷宫滴头水力特性非定常数值模拟研究[J].水利学报,2010,41(3): |
| 迷宫滴头水力特性非定常数值模拟研究 |
| Numerical simulation of unsteady flow in labyrinth emitters of drip irrigation system |
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| DOI： |
| 中文关键词: 滴头 水力特性 CFD 非定常流 |
| 英文关键词: drip irrigation emitter hydraulic character unsteady flow |
| 基金项目: |
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| 中文摘要: |
| 应用非定常模型对迷宫滴头三维非定常流动进行了模拟，基于标准k－湍流模型和 VOF 多相流模型得到了流道内的速度压力分布及滴头的水力特性分析了水滴从形成到滴落的全过程结果表明非定常模型计算值与实测数据吻合良好，其精度高于定常模型计算结果。 |
| 英文摘要: |
| A new transient CFD model used for 3D unsteady flow simulation of labyrinth emitters is proposed. The simulation is based on standard k － model and VOF multiphase model. The flow fields are calculated by the new model，and the corresponding hydraulic characteristics of the labyrinth emitters were predicted. The whole process of water flow from emitter inlet to dropping formation in the air is presented. The comparison between numerical simulation and experimental data shows that the transient analysis can provide more details of the 3D complex flow in emitters.The new model provides an accurate way for analyzing the water transportation process in the drip irrigation system. |
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