本文選題：向上傾斜管道 + 氣液兩相流　； 參考：《東北石油大學》2015年碩士論文

【摘要】：在油田現(xiàn)場,嚴格意義上的水平管道和垂直管道很少,研究傾斜管道更具實際意義。在傾斜管道中,隨著溫度和壓力的變化,氣液兩相混合流動是非常普遍的現(xiàn)象,而時間和空間上均不確定的相界面,給氣液兩相流研究帶來極大的困難。本文采用室內(nèi)實驗和數(shù)值模擬相結合的方法,研究向上傾斜管道中氣液兩相流的流型,認識流型特征和形成機制,為計算氣液兩相流在傾斜管道中壓力梯度和持液率等其它相關參數(shù)提供理論基礎。本文的主要研究內(nèi)容包括以下幾個方面:本文根據(jù)兩相流基本理論,介紹氣液兩相流基本參數(shù)計算方法以及傾斜管中氣液兩相流的流型和判別方法,為后面研究氣液兩相流的流型提供理論基礎。在多相流實驗管路系統(tǒng)中,設計向上傾斜管道中氣液兩相流的實驗方案和流程,進行氣液兩相流流型實驗研究,識別氣液兩相流的流型,描述向上傾斜管中氣液兩相流的流動特征,并繪制氣液兩相流流型圖,分析管道傾斜角對流型轉變的影響。并利用COMSOL Multiphysics軟件,選用非穩(wěn)態(tài)求解器,對向上傾斜管中氣液兩相流中不同時刻的體積分數(shù)進行數(shù)值模擬研究,判別氣液兩相流的流型,分析氣相折算速度、液相折算速度和管道傾角對流型的影響。氣液兩相流的流型研究是兩相流流動規(guī)律和機理研究的核心問題,直接影響到其它問題的分析研究。因此,開展氣液兩相流流型數(shù)值模擬與實驗研究,具有十分重要的理論和實際意義。在理論上,可為研究兩相流摩擦阻力、界面含氣率和壓降等參數(shù)的準確計算提供理論基礎;在工程上,可為管道運行壓力設計提供依據(jù),確保管道運行的安全性和經(jīng)濟性。
[Abstract]:In oil field, there are few horizontal and vertical pipelines in strict sense, so it is more practical to study inclined pipelines. In inclined pipes, with the change of temperature and pressure, the gas-liquid two-phase mixed flow is a very common phenomenon, and the uncertain phase interface in time and space brings great difficulties to the study of gas-liquid two-phase flow. In this paper, the flow pattern of gas-liquid two-phase flow in an upward inclined pipe is studied by means of laboratory experiments and numerical simulation, and the characteristics and formation mechanism of the flow pattern are recognized. It provides a theoretical basis for calculating the pressure gradient and liquid holdup of gas-liquid two-phase flow in inclined pipes. The main research contents of this paper are as follows: according to the basic theory of two-phase flow, this paper introduces the calculation method of basic parameters of gas-liquid two-phase flow and the flow pattern and discriminating method of gas-liquid two-phase flow in inclined tube. It provides a theoretical basis for the later study of the flow pattern of gas-liquid two-phase flow. In the multiphase flow experimental pipeline system, the experimental scheme and flow chart of gas-liquid two-phase flow in upward inclined pipe are designed, and the experimental study of gas-liquid two-phase flow pattern is carried out to identify the gas-liquid two-phase flow pattern. The flow characteristics of gas-liquid two-phase flow in an upward inclined tube are described, and the flow pattern diagram of gas-liquid two-phase flow is drawn. The numerical simulation of volume fraction at different times in gas-liquid two-phase flow in upward inclined tube is carried out by using COMSOL Multiphysics software, and the flow pattern of gas-liquid two-phase flow is distinguished, and the gas phase conversion velocity is analyzed. The effect of liquid conversion velocity and pipe inclination convection pattern. The study on the flow pattern of gas-liquid two-phase flow is the core problem in the study of the law and mechanism of two-phase flow, which has a direct impact on the analysis and study of other problems. Therefore, the numerical simulation and experimental study of gas-liquid two-phase flow patterns are of great theoretical and practical significance. Theoretically, it can provide a theoretical basis for the accurate calculation of friction resistance, gas holdup and pressure drop of the interface, and provide a basis for the design of pipeline operating pressure in engineering to ensure the safety and economy of pipeline operation.
【學位授予單位】：東北石油大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TE832

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本文編號：1960950