| Numerical Study of Void Fraction Distribution Propagation in Gas-Liquid Two-Phase Flow |
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| 作者姓名： | 杨健慧 李青 卢文强 |
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| 作者单位： | [1]DepartmentofPhysics,GraduateSchool,ChineseAcademyofSciences,Beijing100039,China／／TechnicalInstituteofPhysicsandChemistry,ChineseAcademyofSciences,P.O.Box2711,Beijing100080,China [2]TechnicalInstituteofPhysicsandChemistry,ChineseAcademyofSciences,P.O.Box2711,Beijing100080,China [3]DepartmentofPhysics,GraduateSchool,ChineseAcademyofSciences,Beijing100039,China |
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| 摘 要： | A dynamic propagation model was developed for waves in two-phase flows by assuming that continuity waves and dynamic waves interact nonlinearly for certain flow conditions. The drift-flux model is solved with the one-dimensional continuity equation for gas-liquid two-phase flows as an initial-boundary value problem solved using the characteristic-curve method. The numerical results give the void fraction distribution propagation in a gas-liquid two-phase flow which shows how the flow pattern transition occurs. The numerical simulations of different flow patterns show that the void fraction distribution propagation is determined by the characteristics of the drift-flux between the liquid and gas flows and the void fraction range. Flow pattern transitions begin around a void fraction of 0.27 and end around 0.58. Flow pattern transitions do not occur for very high void concentrations.
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| 关 键 词： | 空间片段分配 气液二相流程 流程模仿变换 动态传播模型 |
| 收稿时间： | 28 November 2003 |
| 修稿时间： | 14 July 2004. |
Numerical Study of Void Fraction Distribution Propagation in Gas-Liquid Two-Phase Flow |
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| Jianhui Yang, &#x;&#x;&#x;, Qing Li, &#x;,Wenqiang Lu, &#x;&#x;ú.Numerical Study of Void Fraction Distribution Propagation in Gas-Liquid Two-Phase Flow[J].Tsinghua Science and Technology,2005,10(3):398-403. |
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| Authors: | Jianhui Yang &#x;&#x;&#x; Qing Li &#x; Wenqiang Lu &#x;&#x;ú |
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| Institution: | aDepartment of Physics, Graduate School, Chinese Academy of Sciences, Beijing 100039, China;bTechnical Institute of Physics and Chemistry, Chinese Academy of Sciences, P.O. Box 2711, Beijing 100080, China |
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| Abstract: | A dynamic propagation model was developed for waves in two-phase flows by assuming that continuity waves and dynamic waves interact nonlinearly for certain flow conditions. The drift-flux model is solved with the one-dimensional continuity equation for gas-liquid two-phase flows as an initial-boundary value problem solved using the characteristic-curve method. The numerical results give the void fraction dis- tribution propagation in a gas-liquid two-phase flow which shows how the flow pattern transition occurs. The numerical simulations of different flow patterns show that the void fraction distribution propagation is deter- mined by the characteristics of the drift-flux between the liquid and gas flows and the void fraction range. Flow pattern transitions begin around a void fraction of 0.27 and end around 0.58. Flow pattern transitions do not occur for very high void concentrations. |
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| Keywords: | void fraction distribution gas-liquid two-phase flow flow pattern transition |
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