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彈性噴嘴變量噴頭結(jié)構(gòu)設(shè)計(jì)與參數(shù)模型
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國(guó)家自然科學(xué)基金資助項(xiàng)目（51079140）,、“十二五”國(guó)家科技支撐計(jì)劃資助項(xiàng)目（2011BAD29B08）和高等學(xué)校學(xué)科創(chuàng)新引智計(jì)劃資助項(xiàng)目（B12007）


Configuration Design and Parameter Model for Flexible Nozzle of Variable-rate Sprinkler
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    摘要:

    設(shè)計(jì)了一種彈性噴嘴的變量噴頭,，其噴嘴直徑隨壓力的增大而變大，從而降低噴頭的霧化程度,。為研究確定彈性噴嘴錐形角、噴嘴直徑,、末端圓柱段長(zhǎng)度,、彈性材料厚度和噴嘴伸出量等主要參數(shù),，利用ANSYS建立了變量噴頭及其內(nèi)流道的三維實(shí)體模型,，采用k-ε模型在CFX和ANSYS單向流固耦合中模擬噴頭彈性噴嘴在不同工作壓力,，不同噴嘴直徑組合下的內(nèi)流道流場(chǎng)和噴嘴的變形過(guò)程，建立了工作壓力,、噴嘴直徑變形和噴頭流量等參數(shù)的關(guān)系模型,。采用全面噴灑的方法對(duì)噴頭樣品進(jìn)行了試驗(yàn)，通過(guò)測(cè)量噴頭流量和噴頭工作壓力等,，對(duì)模擬結(jié)果進(jìn)行驗(yàn)證,。

    Abstract:

    A flexible nozzle of the variable-rate sprinkler was developed. As the pressure increased, the diameter of the flexible nozzle increased and then the degree of fogging reduced. The main parameters of the nozzle, cone angle, range nozzle, length of end cylindrical section, thickness of elastic material, and extended volume of nozzle, were investigated. The 3-D solid model of the flexible variable nozzle and its internal runner were established using ANSYS software. The internal flow field of the flexible nozzle was simulated using computational fluid dynamics (CFD) software with k-ε model and ANSYS software with one-way fluid solid coupling model at different working pressure and different range nozzle. Relationship between working pressure, range nozzle and nozzle flow were evaluated. Simulation results were verified and precision of model was improved by measuring the displacement of the nozzle, the nozzle flow and the working pressure of the produced nozzle samples.

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劉文帥,韓文霆,姚小敏,崔利華,張小波.彈性噴嘴變量噴頭結(jié)構(gòu)設(shè)計(jì)與參數(shù)模型[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2013,44(12):80-86. Liu Wenshuai,Han Wenting, Yao Xiaomin,Cui Lihua,Zhang Xiaobo. Configuration Design and Parameter Model for Flexible Nozzle of Variable-rate Sprinkler[J]. Transactions of the Chinese Society for Agricultural Machinery,2013,44(12):80-86.

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  • 在線發(fā)布日期: 2013-12-05
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