海底輸水管道中駝峰氣阻臨界特性研究
本文關(guān)鍵詞:海底輸水管道中駝峰氣阻臨界特性研究 出處:《浙江大學(xué)》2015年碩士論文 論文類型:學(xué)位論文
【摘要】:在跨流域調(diào)水工程中,跨海調(diào)水隨著海洋經(jīng)濟(jì)的蓬勃發(fā)展日益受到重視。海底輸水管道對(duì)于供水困擾的解決起著舉足輕重的作用,海底輸水管道的設(shè)計(jì)與運(yùn)行安全越發(fā)重要。由于不能像陸地上一樣采用排氣閥等措施排除空氣,駝峰氣阻是海底輸水管道建設(shè)中必然會(huì)面對(duì)的問題,對(duì)駝峰氣阻展開研究有很大的必要性。 為了研究駝峰氣阻和氣泡運(yùn)動(dòng)之間的關(guān)系,總結(jié)了單氣泡的形狀、運(yùn)動(dòng)方程、聚并及消散的基本原理,通過試驗(yàn)確認(rèn)產(chǎn)生穩(wěn)定阻力的駝峰氣阻,其形狀為橢球形。為了研究駝峰氣阻的臨界水力特性,采用理論研究和試驗(yàn)研究相結(jié)合的方法,對(duì)駝峰氣阻的平衡特性進(jìn)行研究,得出并驗(yàn)證了駝峰氣阻的平衡特性模型,研究結(jié)果表明,駝峰氣阻受水流拖曳力,浮力和管道接觸壓力而保持平衡,駝峰氣阻平衡傾角和流速為拋物線關(guān)系,氣阻赤道半徑越大越能保持平衡。同樣地,用試驗(yàn)?zāi)P万?yàn)證了阻力特性理論模型,結(jié)果表明,駝峰氣阻極半徑面積越大,對(duì)系統(tǒng)造成的阻力越大。 本文理論解析了消散原理,并建立試驗(yàn)?zāi)P瞳@得了氣阻消散的臨界數(shù)據(jù)和趨勢(shì)。結(jié)果表明,消散臨界傾角隨氣阻體積變大而減小,不同體積的氣阻具有相似的消散臨界流速。最后,還建立了氣阻和水錘相互作用的模型,采用特征線法數(shù)值模擬了沖擊氣阻水錘。
[Abstract]:In the inter basin water diversion project, water diversion across the sea with the rapid development of marine economy has attracted more and more attention. The seabed pipeline plays an important role in solving the water supply problem, submarine pipeline design and operation safety is more and more important. Because it is not the same as on land, the exhaust valve and other measures to eliminate air hump air resistance is facing the inevitable problems in the construction of submarine pipeline, the hump air resistance of great necessity.
In order to study the relationship between hump air resistance and bubble movement, summarizes the single bubble shape, motion equation, the basic principle of coalescence and dissipation, hump air resistance to generate stable resistance by confirmed, in the shape of an ellipsoid. In order to critical hydraulic characteristics of hump air resistance, using the methods of theoretical research and Experiment Study on the combination of the research on hump equilibrium characteristics of air resistance, draw and verify the equilibrium characteristics of hump air resistance model, the results show that the gas flow resistance by hump drag, buoyancy and pipe contact pressure balance, gas drag angle and velocity hump balance for parabolic relationship between equatorial radius of more gas resistance it can keep the balance. Similarly, experimental model to verify the resistance characteristics of the theoretical model, the results show that the air drag hump polar radius is bigger, the greater the system caused by the resistance.
In this paper, the analytical theory and model testing dissipation principle, obtained the critical data and trend of air resistance dissipation. The results show that the dissipation of critical inclination with gas resistance becomes larger in volume and decrease of air resistance of different volume with critical velocity dissipation similar. Finally, also established the air resistance and water hammer interaction model, the the characteristic line method for numerical simulation of the impact of air resistance water hammer.
【學(xué)位授予單位】:浙江大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2015
【分類號(hào)】:TE973
【參考文獻(xiàn)】
相關(guān)期刊論文 前10條
1 孫玉東,劉忠族,劉建湖,張效慈;水錘沖擊時(shí)管路系統(tǒng)流固耦合響應(yīng)的特征線分析方法研究[J];船舶力學(xué);2005年04期
2 張俊娥;高季章;;國(guó)內(nèi)外海島水資源的開發(fā)利用[J];中國(guó)防汛抗旱;2012年01期
3 王念慎;羅建群;宋莉;郝金剛;鄭大瓊;;多功能水泵控制閥對(duì)水錘的防護(hù)作用[J];中國(guó)給水排水;2007年02期
4 曾廣德;簡(jiǎn)德武;翟作衛(wèi);王洪云;;廈門市翔安原水跨海管道工程的設(shè)計(jì)與施工[J];中國(guó)給水排水;2009年14期
5 陳守慶;陳ng城;羅昊進(jìn);方均艦;吳旭磊;莊小將;包松考;武樂毅;陳金榮;張德躍;;海島縣洞頭陸域引供水工程輸水管道海域段設(shè)計(jì)[J];中國(guó)給水排水;2013年14期
6 陳松華;;海島地區(qū)提高水資源保障能力對(duì)策探析——以舟山市為例[J];浙江水利科技;2010年01期
7 劉光臨,劉志勇,王聽權(quán),胡青;單向調(diào)壓塔水錘防護(hù)特性的研究[J];給水排水;2002年02期
8 沈光;李俊;梁俊寧;繆一星;;海底PE管道邊敷邊埋施工技術(shù)研究——大連長(zhǎng)山島~皮口海底PE管道敷埋施工技術(shù)研究[J];建筑施工;2007年07期
9 于必錄;;含氣水錘的研究現(xiàn)狀及其進(jìn)展[J];流體工程;1992年05期
10 勞力云,鄭之初,吳應(yīng)湘,李東暉;關(guān)于氣液兩相流流型及其判別的若干問題[J];力學(xué)進(jìn)展;2002年02期
相關(guān)博士學(xué)位論文 前1條
1 王明舜;中國(guó)海島經(jīng)濟(jì)發(fā)展模式及其實(shí)現(xiàn)途徑研究[D];中國(guó)海洋大學(xué);2009年
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