本文關(guān)鍵詞： 風(fēng)能 流場(chǎng) 數(shù)值模擬 濃縮風(fēng)能裝置 擴(kuò)散管 凸緣　出處：《農(nóng)業(yè)工程學(xué)報(bào)》2017年18期 　論文類型：期刊論文

【摘要】：濃縮風(fēng)能裝置的擴(kuò)散管結(jié)構(gòu)直接影響濃縮風(fēng)能型風(fēng)電機(jī)組的輸出功率。為提高濃縮風(fēng)能裝置的濃縮效率,以濃縮風(fēng)能裝置為研究對(duì)象,采用數(shù)值模擬方法,研究擴(kuò)散管凸緣的幾何參數(shù)對(duì)濃縮風(fēng)能裝置內(nèi)部流場(chǎng)特性的影響規(guī)律;并通過試驗(yàn)驗(yàn)證數(shù)值模擬的可靠性。結(jié)果表明:擴(kuò)散管凸緣結(jié)構(gòu)能夠明顯提高濃縮風(fēng)能裝置對(duì)自然風(fēng)的加速作用和風(fēng)能利用率;且裝置內(nèi)部流場(chǎng)的流速和風(fēng)輪掃掠面積上的可利用風(fēng)能隨著凸緣高度L的增加而增大。綜合分析可得,帶有L為450 mm、凸緣角度α為+9°的擴(kuò)散管凸緣的濃縮風(fēng)能裝置模型流場(chǎng)流速和可利用風(fēng)能較高;與原始模型相比,其內(nèi)部流場(chǎng)最大流速提高了30.738%,可利用風(fēng)能提高了84.26%,是所研究模型中流場(chǎng)性能較佳的濃縮風(fēng)能裝置結(jié)構(gòu)。
[Abstract]:The diffusion-tube structure of the concentrated wind energy plant directly affects the output power of the concentrated wind power unit. In order to improve the concentration efficiency of the concentrated wind energy unit, the concentrated wind energy unit is taken as the research object and the numerical simulation method is adopted. The influence of the geometric parameters of the flange of the diffusion-tube on the flow field characteristics of the concentrated wind energy plant is studied. The reliability of the numerical simulation is verified by experiments. The results show that the diffusion-tube flange structure can obviously improve the acceleration of natural wind and the utilization rate of wind energy. The available wind energy increases with the increase of flange height L in the flow field and swept area of the wind turbine. The comprehensive analysis shows that the wind energy with L is 450 mm. The model of concentrated wind energy device with flange of diffusion tube with flange angle 偽 = 9 擄has high flow velocity and available wind energy. Compared with the original model, the maximum velocity of the internal flow field is increased by 30.738, and the wind energy is increased by 84.26. It is a concentrated wind energy device with better flow field performance in the studied model.
【作者單位】： 新能源電力系統(tǒng)國(guó)家重點(diǎn)實(shí)驗(yàn)室(華北電力大學(xué));
【基金】：國(guó)家科技支撐計(jì)劃資助項(xiàng)目(2009BAA22B02) 中央高�；究蒲袠I(yè)務(wù)費(fèi)專項(xiàng)資金資助(2016XS56)
【分類號(hào)】：TM315
【正文快照】： 0引言濃縮風(fēng)能裝置是濃縮風(fēng)能型風(fēng)電機(jī)組[1-8]的核心部件,而擴(kuò)散管凸緣能夠增強(qiáng)濃縮風(fēng)能裝置的抽吸作用,提高濃縮風(fēng)能裝置內(nèi)部流場(chǎng)的流體流速,同時(shí)降低裝置內(nèi)部的風(fēng)能波動(dòng)性,提高機(jī)組的風(fēng)力發(fā)電質(zhì)量。為提高濃縮風(fēng)能型風(fēng)電機(jī)組的發(fā)電效率、降低機(jī)組發(fā)電成本,許多國(guó)內(nèi)外研究人，

本文編號(hào)：1476695