本文關(guān)鍵詞： 水利血防 旋流排螺 模型試驗 水流結(jié)構(gòu) 排螺率　出處：《長江科學(xué)院院報》2015年01期 　論文類型：期刊論文

【摘要】：一些傳統(tǒng)的水利血防措施(沉螺池、中層取水等)受多種條件的制約,工程效益難以充分發(fā)揮,研究新的水利血防措施勢在必行。本研究借鑒旋流排沙的原理,研制了旋流排螺模型,并通過模型試驗研究裝置內(nèi)的水流特性及排螺效果。結(jié)果表明:流量增大,流速以及紊動強度也隨之增大;切向流速的徑向分布中,靠近邊壁的流速較大;在測流垂線上,切向流速分布中則以表層流速為最大;隔板對水流擠壓使得在隔板邊緣出現(xiàn)較大的軸向流速;模型內(nèi)緣的徑向流速比外緣徑向流速更大。軸向紊動強度的分布為中上層大、底層小。在試驗流量下,投入一定數(shù)量的釘螺,觀測到模型排螺率達(dá)100%,表明旋流排螺技術(shù)是一種行之有效的排螺工程措施。
[Abstract]:Some traditional water conservancy and blood control measures (sinking-snail pond, middle water intake, etc.) are restricted by various conditions, so it is difficult to give full play to the engineering benefits, so it is imperative to study new water conservancy and blood control measures. In this paper, a spiral flow conch model has been developed, and the characteristics of flow and the effect of spiral flow in the device have been studied by model test. The results show that the velocity of flow and the intensity of turbulence increase with the increase of flow rate, and in the radial distribution of tangential velocity, The velocity near the side wall is larger, the tangential velocity distribution is the largest in the vertical line of flow measurement, and the axial velocity is larger at the edge of the diaphragm due to the compression of the water by the diaphragm. The radial velocity of the inner edge of the model is larger than that of the outer edge. The distribution of axial turbulence intensity is large in the upper layer and small in the bottom layer. The model snail rate is 100, which indicates that the swirl spiral conch arrangement technique is an effective method for snail conch arrangement engineering.
【作者單位】： 長江科學(xué)院河流研究所;
【基金】：長江水利委員會血防項目(CKSG2013136/HL)
【分類號】：TV149.2;R532.21

【參考文獻(xiàn)】

中國期刊全文數(shù)據(jù)庫 前3條

1 張威;熊正安;潘慶q，

本文編號：1496823