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基于CFD的開放式牛舍擾流風(fēng)機(jī)安裝參數(shù)優(yōu)化
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公益性行業(yè)（農(nóng)業(yè)）科研專項(xiàng)資助項(xiàng)目（201303091）、國家奶牛產(chǎn)業(yè)技術(shù)體系資助項(xiàng)目（CARS-37）和中央高?；究蒲袠I(yè)務(wù)費(fèi)專項(xiàng)資金資助項(xiàng)目（2012YJ015）


Optimization of Installation Parameters of Mixing Fans in Open Dairy Cow House Based on CFD
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    摘要:

    為了確定開放式牛舍中擾流風(fēng)機(jī)的安裝參數(shù)，在對天津市某開放式牛舍氣流場實(shí)測的基礎(chǔ)上，建立了風(fēng)機(jī)不同安裝參數(shù)間組合的16個(gè)幾何模型，對牛舍內(nèi)的氣流場進(jìn)行了三維穩(wěn)態(tài)模擬。以擾流風(fēng)機(jī)安裝高度和傾角為影響因素，以距地面1.0 m和1.5 m高度平面上風(fēng)速大于1.0m/s區(qū)域面積的百分比為評價(jià)指標(biāo)，分析了風(fēng)機(jī)安裝參數(shù)對擾流效果的影響。結(jié)果表明，在風(fēng)機(jī)傾角相同時(shí)，安裝高度對擾流效果的影響沒有顯著差異（P＞0.05）；風(fēng)機(jī)最佳的傾角為：臥欄上方的風(fēng)機(jī)為20°、頸枷上方風(fēng)機(jī)為10°。

    Abstract:

    In order to determine the installation parameters of mixing fans in open dairy cow house, field experiment was conducted to measure airflows in dairy cow house in Tianjin. After establishing 16 geometric model with different installation parameters of mixing fans，3-D steady simulation of airflow distributions was carried out in cow house. The effect of air flow disturbances was analyzed with fans installation height and tilt angle as influence factors and the ratio of the area where air velocity more than 1.0 m/s to total region in two surfaces which above the ground 1.0 m and 1.5 m as evaluation indexes. The result showed that there was no significant difference on effect of air flow disturbance between different installation height（P＞0.05）in the same tilt angle. The optimal tilt angles of fans were that fans over the cow bed of 20° and fans over the head gate assembly of 10°.

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鄧書輝,施正香,范淋佳,丁濤.基于CFD的開放式牛舍擾流風(fēng)機(jī)安裝參數(shù)優(yōu)化[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2013,44(12):269-274. Deng Shuhui, Shi Zhengxiang, Fan Linjia, Ding Tao. Optimization of Installation Parameters of Mixing Fans in Open Dairy Cow House Based on CFD[J]. Transactions of the Chinese Society for Agricultural Machinery,2013,44(12):269-274.

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  • 在線發(fā)布日期: 2013-12-05
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