Viscosity ratio (10-100)
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Dear Community,
I intend to simulate a two-component, two-phase immiscible flow in a porous medium using OpenLB. After reading some comments and searching for the relevant keywords, I realized that there are still challenges for two-phase problems with relatively high viscosity ratios (around 10-100). Is it possible to perform this simulation by making some modifications in OpenLB? Which example is the closest one considering the mentioned challenge?
I appreciate everyone’s help in advance.Hi Amirmansour,
considering your project, the closest example would be something like the fourRollMill2d or binaryShearFlow2d in the multiComponent folder. It already includes boundaries and uses a phase field free energy model to describe the immiscible flow. The model is not implemented with density or viscosity ratio, but you could implement a viscosity ratio yourself depending on the order parameter.
Or you could wait a few weeks for the next release of OpenLB that will provide more advanced phase field models that can deal with high density and viscosity ratios.Hope this helps.
Kind regards,
Tim
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