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高嵩 尤云祥 李巍 胡天群 俞忠. 下倾管-立管水气严重段塞流数值模拟[J]. 力学学报, 2011, 43(3): 468-475. DOI: 10.6052/0459-1879-2011-3-lxxb2009-675
引用本文: 高嵩 尤云祥 李巍 胡天群 俞忠. 下倾管-立管水气严重段塞流数值模拟[J]. 力学学报, 2011, 43(3): 468-475. DOI: 10.6052/0459-1879-2011-3-lxxb2009-675
Gao Song You Yunxiaing Li Wei Hu Tianqun Yu Zhong. Numerical simulation of the severe slug flow between water-air phases in a declination pipe-riser[J]. Chinese Journal of Theoretical and Applied Mechanics, 2011, 43(3): 468-475. DOI: 10.6052/0459-1879-2011-3-lxxb2009-675
Citation: Gao Song You Yunxiaing Li Wei Hu Tianqun Yu Zhong. Numerical simulation of the severe slug flow between water-air phases in a declination pipe-riser[J]. Chinese Journal of Theoretical and Applied Mechanics, 2011, 43(3): 468-475. DOI: 10.6052/0459-1879-2011-3-lxxb2009-675

下倾管-立管水气严重段塞流数值模拟

Numerical simulation of the severe slug flow between water-air phases in a declination pipe-riser

  • 摘要: 针对海洋油气传输中常见的下倾管-立管系统, 采用Brackbill模型模拟气液相界面间表面张力, VOF方法追踪气液两相运动界面, 提出了管内气液两相流数值模拟方法. 在低气液相进口折算速度下, 数值模拟了该种管型下的严重段塞流动现象, 分析了相关物理参数的变化特性. 结果表明, 在严重段塞流下, 管内流型流态、压力、液塞运动速度、立管出口气液相平均速度、下倾管及立管内含气率等均具有明显周期性特征, 而且一个周期内严重段塞流可分为4个阶段, 进而给出了各阶段中相关参数的变化特性. 数值模拟结果与相关文献中的实验结果吻合良好,表明了该数值模拟方法的有效性.

     

    Abstract: In the present paper, a numerical method for simulatingthe characteristics of two-phase flows in a declination pipe-riser systemwith the gas and fluid was developed. The Brackbill modelwas applied to simulate surface tension between two phases and the VOF method was used to capture themoving interfaces between gas-liquid phases. At low superfical velocity of gas and liquidsuperficial velocities, severe slug flows in such a pipe-riser system weresimulated and the variety characteristics for flow parameters were analyzed.The results show that the flow parameter characteristics due to such asevere slug flow have remarkably periodic characteristics, including theflow pattern, pressure, slug velocity, average phase velocity at the riseroutlet and gas volume fraction, and severe slug flow in a period consists offour evolvement stages where the characteristics of such flow parameters ineach evolvement stage were further given. The numerical results are goodagreements with experimental results reported in the references, showingthat the proposed method is effective.

     

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