We are using the Elastodict package to do some geomechanics analysis. We have encountered issues with the LIR solver and would appreciate your guidance on the cause of the issue and the appropriate solution.
As part of our ongoing research, we are exploring the geomechanics of rock matrix with pores containing a compressible fluid (after imbibition or flooding).
1. An attempt to run the simulation first is impossible using the FeelMath solver on the version of our software as shown in the image below.
2. An attempt to use the LIR solver with the allowance to make the fluid in the pores visible to the computation ( compressible fluid phase), the solver returns an error as shown in the image below.
3. Setting both material laws to Isotropic allows the simulation to run without errors.
However, my concern is that this setting does not account for the fluid present in the pores. Firstly, I want to understand if the solver being blind to the material in the pores, has any effect on the accuracy of the geomechanical analysis, considering our objective of studying the geomechanical effect of flooding (or imbibition) on the reservoir rock matrix.
4. Secondly, is there a material definition, model simplification or workflow that you suggest to run this case while we resolve the solver issue? Is there a recommended workaround or alternative configuration that would allow the LIR solver to be used for this type of problem?
5. Thirdly, what are the requirements to enable the FeelMath solver for the Effective Stiffness package? Specifically, is a separate license, module, or material setting required?
Thank you for your assistance.