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首页> 外文会议>IFIP WG 5.14 International conference on computer and computing technologies in agriculture >Design Method for Chemical Clogging Emitters Boundary Optimization
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Design Method for Chemical Clogging Emitters Boundary Optimization

机译：化学阻塞物边界优化设计方法

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摘要

Fractal flow channel structure as research object, based on chemical clogging condition of the physical model. It was analyzed using computational fluid dynamics (CFD) simulation and reveals the fractal flow channel internal flow characteristics of water and sediment. Fractal flow channel non-energy dissipation of the arc angle design optimization. Using standard κ-ε turbulence model and the DPM model, calculated: (1) As for the hydraulic performance analysis, before optimization emitter flow exponent of 0.487, 0.489 after optimization; From the inner flow field analysis, When the pressure head from 5 m to 15 m, before optimization emitter maximum flow rate from 2.09 m/s to 3.70 m/s, the maximum flow rate to optimize the emitter from 2.15 m/s to 3.81 m/s, the maximum optimization of flow rates were increased compared to the previous 2.87%, 3.34%, 2.97%, the flow rate improved. After optimizing the eddy region, the velocity of the outer edge of the eddy region increased from (0.005-0.752 m/s) to (0.311-0.930 m/s), which improved the self-cleaning ability of the irrigator. Based on the analysis of blockage performance, the passing rate of particles is significantly improved after optimizing the flow channel. Considering the optimized emitter has excellent hydraulic performance and anti-clogging properties.
机译：基于物理模型的化学阻塞条件，分形流道结构为研究对象。使用计算流体动力学（CFD）模拟对其进行了分析，并揭示了水和沉积物的分形流道内部流动特性。分形流道非能量消散的弧角设计优化。使用标准的κ-ε湍流模型和DPM模型，计算得出：（1）对于水力性能分析，优化前的发射器流量指数为0.487，优化后为0.489;从内部流场分析，当压头从5 m到15 m时，优化发射器的最大流量从2.09 m / s到3.70 m / s，优化发射器的最大流量从2.15 m / s到3.81 m / s时，最大流量优化比之前的2.87％，3.34％，2.97％有所提高。优化涡流区域后，涡流区域外边缘的速度从（0.005-0.752 m / s）增加到（0.311-0.930 m / s），从而提高了灌溉机的自清洁能力。通过对堵塞性能的分析，优化了流道后，颗粒的通过率得到了显着提高。考虑到优化的发射器具有出色的水力性能和防堵塞性能。

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