[nesanders]

Let me start by saying that I am self-taught on how to use fluent since I began working on my project in June. I have used this forum and the user’s manual to figure out everything that I have created to this point. That being said it is probably not the best way to do what I am doing. I have created a model that until recently worked as I expected it. In the last few days I have upgraded to version 18.2 and now the model is not working like it used to. I have tried going back to version 18.0 with the same non-working results.

My model is a small simulation of a reservoir and a well bore. I have seen examples of this done in several locations and as stated above it has worked until the recent upgrade. I have attached a very basic image of my model. The larger half circle is the reservoir and should be porous. The smaller inner circle is the wellbore area and should just be fluid. There is an interface zone between the two regions. Pressure Inlet is around the outside of the larger half circle; pressure outlet is the top of the wellbore region, colored orange in the attached picture. Until recently this worked. Now if either the reservoir or the wellbore areas are porous it does not work. It acts like there is no interface between the two zones. If both are porous or both are non-porous and just fluid then the interface zone is present and everything works as expected.

Any ideas?