It seems like quite an interesting project you described.
As far as I understood, the outcome of the analysis is to determine how do additional material placed on the wall of the sump between the oil and probe affects the measurement.
If this is the case, did you already try the full solid-state thermal analysis? You could model the presence of the hot oil by using a particular boundary condition type (on SimScale that would be Natural Convective Heat Transfer).
With this approach you significantly reduce the complexity of the problem and focus the area of interest.
When it comes to SimScale capabilities, at the moment these are the available simulation types:
- solid state heat transfer (no fluid flow, though its presence can be modeled with proper boundary conditions)
- convective heat transfer in single fluid (no solid heat transfer- though as above it can be modeled)
- multiphase flow simulation with 2 non-mixing fluids (only fluid-fluid buoyancy, no thermal)
We are working on releasing soon a simulation model for solid-fluid thermal analysis (Conjugated Heat Transfer- CHT). With this upcoming feature you will be able to simulate thermal behavior of systems consisting of multiple solid domains and uniform fluid domains (so only one fluid for one domain).
Right now if you know that oil mixing at the bottom of the sump will modify the readings, you can first perform convective heat transfer single fluid simulation of oil, and apply the resulting boundary information to the solid-state thermal simulation.
To sum up- the full multi-physics simulation of oil particles injected with air to a solid container together with heat transfer in all domains is not available (and honesty speaking very few software are able to handle such complexity).
At the same time the problem can be solved with existing tools, by using modeling techniques.
Hope that the above clarifies your doubts.
Good luck with your projects!