【摘要】：梭錐管混濁流體分離裝置（簡稱梭錐管）是一種新型的、無需添加任何化學(xué)藥劑和外加動(dòng)力、處理含極細(xì)沙（包括粘粒）的水沙兩相流分離裝置。為了補(bǔ)充和完善水沙分離機(jī)理及結(jié)構(gòu)型式優(yōu)化原則，本文以前人的研究結(jié)果為基礎(chǔ)，應(yīng)用理論分析、試驗(yàn)研究和數(shù)值模擬相互驗(yàn)證和補(bǔ)充的方法對(duì)梭錐管內(nèi)部水沙兩相流場特性及結(jié)構(gòu)型式優(yōu)化原則進(jìn)行研究。 通過水沙兩相流場二維數(shù)值模擬，得到結(jié)構(gòu)尺寸相同的梭錐管與普通裝置內(nèi)泥沙靜水沉降過程的流速分布和濃度分布規(guī)律，并對(duì)結(jié)果進(jìn)行分析和對(duì)比，揭示了梭錐管在水沙分離效率方面優(yōu)于普通裝置的原因。通過三維數(shù)值模擬，對(duì)不同進(jìn)流量、不同進(jìn)流濃度的均勻沙和非均勻沙梭錐管水沙兩相流場進(jìn)行數(shù)值模擬，獲得全面詳細(xì)的梭錐管內(nèi)部流動(dòng)特性，并據(jù)此，揭示梭錐管水力分離水沙的機(jī)理。通過非均勻沙流場的數(shù)值模擬，獲得了不同粒徑的泥沙在梭錐管內(nèi)的分布規(guī)律及其截除率。 建立了轉(zhuǎn)角、錐圈傾角、下錐管傾角、錐圈位置及布水管的安裝位置不同的30個(gè)梭錐管模型，通過二維和三維水沙兩相流場數(shù)值模擬，，對(duì)比分析不同模型內(nèi)的流速場、濃度場的異同點(diǎn)及其對(duì)水沙分離效率的影響，從而補(bǔ)充和完善了梭錐管結(jié)構(gòu)型式優(yōu)化原則，為梭錐管應(yīng)用于實(shí)際和優(yōu)化其運(yùn)行工況提供指導(dǎo)。
[Abstract]:The shuttle-cone tube turbid fluid separation device is a new type of water-sediment two-phase separation device without adding any chemical agent and external force. In order to supplement and improve the principle of water and sediment separation mechanism and structural pattern optimization, the previous research results of this paper are applied to theoretical analysis. The experimental study and numerical simulation were carried out to study the characteristics of water and sediment two-phase flow field and the optimization principle of structure pattern in a shuttle cone tube. Through two-dimensional numerical simulation of two-phase flow field of water and sediment, the velocity distribution and concentration distribution of sediment static water settlement process in the same size shuttle cone tube and common device are obtained, and the results are analyzed and compared. The reason why the shuttle-cone tube is superior to the common equipment in the separation efficiency of water and sediment is revealed. Through three dimensional numerical simulation, the two-phase flow field of uniform sand and non-uniform sand shuttle cone tube with different inlet flow rate and different inlet concentration are numerically simulated, and the flow characteristics inside the shuttle cone tube are obtained in detail. The mechanism of hydraulic separation of water and sediment with shuttle cone tube is revealed. Based on the numerical simulation of the inhomogeneous sand flow field, the distribution of sediment with different particle sizes in the shuttle cone tube and its interception rate are obtained. Thirty shuttle cone tube models with different angle of rotation, inclination of cone ring, dip angle of lower cone tube, position of cone ring and installation position of distribution pipe are established. The flow field in different models is compared and analyzed through two and three dimensional numerical simulation of water and sediment two-phase flow field. The difference and difference of concentration field and its influence on the separation efficiency of water and sediment complement and perfect the principle of structural type optimization of shuttle cone tube and provide guidance for the application of shuttle cone tube in practice and optimization of its operating conditions.
【學(xué)位授予單位】：新疆農(nóng)業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TV149.2

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 徐姚,張政,程學(xué)文,鄭玉貴,柯偉,姚治銘;旋轉(zhuǎn)圓盤上液固兩相流沖刷磨損數(shù)值模擬研究[J];北京化工大學(xué)學(xué)報(bào)(自然科學(xué)版);2002年03期

2 肖堯;施漢昌;范蘢;;基于計(jì)算流體力學(xué)的輻流式二沉池?cái)?shù)值模擬[J];中國給水排水;2006年19期

3 張政,謝灼利;流體-固體兩相流的數(shù)值模擬[J];化工學(xué)報(bào);2001年01期

4 曾光明,葛衛(wèi)華,秦肖生,黃國和,劉鴻亮;數(shù)值模擬方法在二維沉淀池優(yōu)化設(shè)計(jì)中的應(yīng)用[J];環(huán)境工程;2002年02期

5 李廣年;張軍;陸林章;張國平;;PIV,LDV在螺旋槳尾流測試中的比對(duì)應(yīng)用[J];航空動(dòng)力學(xué)報(bào);2010年09期

6 陶洪飛;邱秀云;趙麗娜;李琳;;水沙分離鰓內(nèi)部流場的數(shù)值模擬[J];農(nóng)業(yè)工程學(xué)報(bào);2013年17期

7 李嘉,羅麟,李克鋒,張永澤;紊流場中固體顆粒運(yùn)動(dòng)軌跡的Lagrangian模型[J];水動(dòng)力學(xué)研究與進(jìn)展(A輯);1997年01期

8 張健,NIEH S;渦旋管內(nèi)強(qiáng)旋湍流氣固兩相流的數(shù)值模擬[J];水動(dòng)力學(xué)研究與進(jìn)展(A輯);2000年04期

9 倪晉仁,曲軼眾;固液兩相流中固體顆粒的垂直分選模型[J];水動(dòng)力學(xué)研究與進(jìn)展(A輯);2003年03期

10 周永,吳應(yīng)湘,鄭之初,劉秋生,李清平;油水分離技術(shù)研究之一——直管和螺旋管的數(shù)值模擬[J];水動(dòng)力學(xué)研究與進(jìn)展(A輯);2004年04期

本文編號(hào)：2373819