[bfox48]

I am new to using CFD software and am building my first model in FLOW3D. I had a question regarding assessment of mesh quality. It doesnt appear flow3d has any built in diagnostic tools regarding the quality of a finished mesh... or can someone tell me if I am not looking in the right place. In addition I am trying to model a situation where I have a wide natural channel that constricts laterally into a structure with a large width constriction and transition to a steep bedslope (~0.1). Any general recommendations on how to transition my mesh sizes at this abrupt transition?

My plan was to have a single coarse mesh block covering the entire spatial domain, then nest a block with cells half the size of the coarse mesh. Then possibly nesting 1 or 2 more blocks around the structure where there will be large gradients. This would effectively reduce my mesh size by a factor of 8 at each of the nested interfaces.

Any thoughts?