NUMERICAL SIMULATIONS OF GAS-LIQUID STRATIFIED FLOW IN A HORIZONTAL PIPE WITH GAS INJECTION THROUGH WALL
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摘要: 管内气液两相分层流是管道输运和水平井采油过程中重要的研究课题之一,而气液界面是研究的重点内容,尤其是有气泡穿过界面的分层流是水平井采油过程中从有壁面注入时不可回避的流动现象,也是数值计算的难点所在.本文利用VOF方法[1]捕捉气液界面,应用有限体积方法和重正化κ-ε湍流模式[2]计算圆管内三维非定常雷诺平均方程,得到了典型的界面上有质量交换时的分层流的流场、界面形状和界面上阻力变化的结果.Abstract: Gas-liquid stratified flow in a horizontal pipe is one of the important research subjects of pipe transportation and horizontal well oil extraction. A foremost concern is the interface of gas-liquid, especially the stratified flow with bubbles passing through the interface. It is an inescapable and challenging problem in horizontal well oil extraction with wall injection. In this paper, gas-liquid interface is captured by means of VOF(Volume of fluid), and 3-D unsteady Reynolds-averaged Navier-Stokes equations are solved by using FVM (Finite volume method) and RNG κ-ε turbulence model. The typical stratified flow field with mass exchange through interface, interface shape and resistance at interface are obtained.
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Keywords:
- gas-liquid flow /
- stratified flow /
- resistance
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