Here is an animation showing multi-phase flow of two fluids in a 2D heterogeneous micromodel.  The solid grains are black.  The simulations mimic experiments on injection of liquid CO2 into a water filled micromodel at high pressure.  The simulations were done by Dr. Yu Chen using the Lattice Boltzmann Method.   NCSA’s Blue Waters supercomputer was used.  The red fluid  (liquid CO2) injected from the left has a viscosity 13 times smaller than the initial blue fluid (water).  The Capillary Number (flow rate) = 10.48d-4.

Here are animations showing the invasion of super-critical CO2 into a Bentheimer sandstone core that is initially saturated with water.  The simulations are for a higher (Capillary Number = 1d-4)  and lower flow rate (Capillary Number = 1d-5).  The CO2 is red and the water is transparent; CO2 viscosity is 10 times less than the water viscosity.    The rock pore space geometry is taken directly from a micro-CT scan at resolution 3.18 micron.  The simulations were performed using the Blue Waters supercomputer.  This simulates the injection of supercritical carbon dioxide into a saline aquifer.

New high-performance computing animations of pore-scale multi-phase flow in real rock geometry, as published in Chen, Valocchi, Kang, Viswanathan, https://doi.org/10.1029/2019WR025746, 2020.

GPU Accelerated Simulation of Fluid Displacement in a Sandstone 1  https://youtu.be/bHpyKJpNLTM

GPU Accelerated Simulation of Fluid Displacement in a Sandstone 2   https://youtu.be/VOGwyMFB8q8

GPU Accelerated Simulation of Fluid Displacement in a Sandstone 3  https://youtu.be/oyTTg-M3OyE