dual enclosed loop projections
 

hello,

trying to mesh a large rectangular tank (3D) with a relatively small circular inlet at one end and an identically shaped outlet at the other outlet is slightly offset from inlet

after many decompositions, etc. I am recieving messages s/a:

"dual intersecting enclosed loop projections not handled yet" and "dual enclosed loop projections not implemented yet"

not even sure where to begin with this issue - perhaps, what are these loop projections and how to handle/implement them ?

any insight will be greatly appreciated - thank you