摘要
应用欧拉-拉格朗日模型,对微裂缝中液-固两相流动过程进行数值模拟。在数学模型中,液相采用连续相模型,颗粒当做离散分散在连续相中,并考虑了相间耦合作用。对于物理模型,建立了二维直微裂缝模型,研究裂缝的液相粘度、液相速度和颗粒密度等因素对裂缝中两相流动的影响。模拟得到了微通道内颗粒瞬时分布状态、颗粒运动轨迹、颗粒停留时间、颗粒轴向速度分布、液相轴向速度分布等参数的变化规律,定性的揭示了储层裂缝内液固两相流动过程。
Numerical simulation of liquid-solid two-phase flow in micro-fractures was carried out by Euler-Lagrange model. In the mathematical model, the liquid phase used the continuous phase model, the particles phase was treated as discrete phase dispersed in a continuous phase, and the coupling effect was considered. For the physical model, a two-dimensional direct micro-fracture model was established to study the effect of liquid viscosity, liquid velocity and particle density on the two-phase flow in fracture. The instantaneous distribution of particles in micro-fracture was obtained as well as the particle trajectory and particle retention time, particle axial velocity distribution, the variation law of the axial velocity distribution in liquid phase. The process of liquid-solid two-phase flow in micro-fracture reservoir was revealed qualitatively.
出处
《当代化工》
CAS
2016年第6期1194-1196,1200,共4页
Contemporary Chemical Industry
关键词
微裂缝
计算流体力学
离散元方法
数值模拟
Micro-fracture
Computational fluid dynamics
Discrete element method
Numerical simulation
作者简介
杨倩，女，黑龙江大庆人，在读硕士研究生，就读于东北石油大学石油与天然气专业，研究方向：复杂流体力学。E-mail：1036573319@qq．com。
