I want to define specifications such as tie rod, seal rod and seal strip for a heat exchanger.(BES)
The number of tubes of this heat exchanger is 1576.
After defining all the items, I see that the number of tubes is less than the given value and after run, the coordinates of the seal strip are different from the input.
I change bundle to shell clearance for set tube count but I have a massage in runtime box:
"Bundle-to-shell clearance set by user, is less than required. OTL based only upon user specified clearance.Construction may not be possible."
Where is the problem and what should I do to fix it?