can you elaborate on your mesh setup and what you mean by optimization? have you just set global settings, local controls, are you using mesh adaptive...etc?
where exactly are you changing the freestream velocity? in the initial settings?
if you clone and don't change anything, does it still remesh or does it run properly?
my first thought is that it may be remeshing because it thinks you are changing something in the model. how solid is your model? what version/service pack? are you cloning to a new config or same config?
my second is if you aren't using manual mesh yet, you should switch to that which will basically lock down the settings. and turn off adaptive if you are using it. otherwise you are asking the software to change the mesh based on the problem.
When I say optimize I mean that I spent a lot of time assigning local intial meshes and tweaking the settings and performing my own mesh sensitivity study until I got the software to give me a mesh that I felt was half-way decent. I have seen what comes out of the automesh and I want nothing to do with it. I thought I had the adaptive option turned off because it hasn't been refining my mesh during a run. Perhaps I did not actually turn that off, I can check on this in a few days perhaps.
The freestream velocity was changed in the only place it is defined, the initial settings. Is there some other way to do this? I supose I should mention that this is an external flow case.
No, I can clone and leave it as is and everything stays the same.
Model is 100% solid where it should be and empty space where it shouldn't. I spent several days cleaning, fixing and tweaking the CAD to get a usable model.
As I said, I will check the adaptive mesh setting when I have a chance. It may be a few days, but I will repost once I do.