相间力对微孔通道内两相驱替渗流影响规律的LBM研究
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摘要
为研究了相间力对微孔通道内水-气两相渗流规律的影响,利用格子-Boltzmann方法建立了孔隙尺度下微孔通道内的水-气两相渗流驱替的数学模型。采用C++语言编制的程序对微孔通道内水-气两相渗流驱替过程进行了数值模拟。通过对模拟结果的分析发现:两相驱替的总体效果与相间力有较大关系,流固作用力越大,多孔骨架的亲水性越强,两相渗流的总体驱替效果就越好,驱替速度越大,反之亦然。
To study the influence of interphase force on water-gas two-phase flow in microporous channels, a mathematical model of water-gas two-phase seepage in channel of pore-scale is established by lattice Boltzmann method. The process of water-gas two-phase seepage displacement in microporous channels is simulated by C++ program. it is found that overall displacement effect of two-phase flow is closely related to interphase force. The larger the fluid-solid force, the stronger the hydrophilicity of the porous skeleton, the better the overall displacement effect of the two-phase flow, and vice versa.
To study the influence of interphase force on water-gas two-phase flow in microporous channels, a mathematical model of water-gas two-phase seepage in channel of pore-scale is established by lattice Boltzmann method. The process of water-gas two-phase seepage displacement in microporous channels is simulated by C++ program. it is found that overall displacement effect of two-phase flow is closely related to interphase force. The larger the fluid-solid force, the stronger the hydrophilicity of the porous skeleton, the better the overall displacement effect of the two-phase flow, and vice versa.
引文
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[3]Hirt C W,Nichols B D.Volume of fluid(VOF)method for the dynamics of free boundaries[J].Journal of computational physics,1981,39(1):201-225.
[4]Osher S,Sethian J A.Fronts propagating with curvature-dependent speed:algorithms based on HamiltonJacobi formulations[J].Journal of computational physics,1988,79(1):12-49.
[5]Pivello M R,Villar M M,Serfaty R,et al.A fully adaptive front tracking method for the simulation of two phase flows[J].International Journal of Multiphase Flow,2014,58:72-82.
[6]Jacqmin D.Calculation of two-phase Navier-Stokes flows using phase-field modeling[J].Journal of Computational Physics,1999,155(1):96-127.
[7]何雅玲,李庆,王勇,等.格子Boltzmann方法的工程热物理应用[J].科学通报,2009(18):2638-2656.
[8]Gunstensen A K,Rothman D H.A Galilean-invariant immiscible lattice gas[J].Physica D:Nonlinear Phenomena,1991,47(1/2):53-63.
[9]Shan X,Chen H.Lattice Boltzmann model for simulating flows with multiple phases and components[J].Physical Review E,1993,47(3):1815.
[10]Swift M R,Osborn W R,Yeomans J M.Lattice Boltzmann simulation of nonideal fluids[J].Physical review letters,1995,75(5):830.
[11]Bouzidi M,Firdaouss M,Lallemand P.Momentum transfer of a Boltzmann-lattice fluid with boundaries[J].Physics of Fluids,2001,13(11):3452-3459.