Here is some example of wrong existing ship rebuilding. (Wrong bulbous bow shape). In some conditions resistance uncreased dramatically. Owners...
Run CFD with and without thees appendages. Difference in resistance give you quite good estimation. Looks like owner of the ship try to fix some...
Agree, this is excellent explanation. Not sure if this solution can be effective. It is really new for me also.
Yes, please ask, if it possible.
The Iges file has been generated by Opencascade library. Intersting. To definition of trimmed surface I have to make outer contour an inner...
Thank you! I will check it. What tolerance do you use for it?
[ATTACH] I have two trimmed surfaces. First surface has 4x4 control points, second one 5x5 control points. In second case Rhino can't calculate...
for this one I just made hull shape, but not shell plates. And actually you right in many cases.
[ATTACH] some more shell plates
It as not Zephyr it was Voyager - Voyager pelagic trawler launched at Nauta - Poland at Sea - maritime economy portal...
Try ti find, but it not easy...
Bezier or NURBS surfaces has some flatness in the corners. Corners of this surface patches are little bit more special. Surface patch comes...
It is not easy to find pictures with clear vision of shell plates, but I think hull lines fairing also very important. Here is one hull shape...
Most fore bulb plates, close to bottom, has very strange seam. What us the reason? I think mist of the problems comes from lines fairing quality....
Algorithms for non-developable plates is quite complicated. In Shape Maker we use shell expansion method based on rectangular mesh. Surface...
Most of biggest plates has a lot of double curvature. Guys in workshop had a big troubles to bend it correctly. Usually seams need to be placed in...
https://apps.dtic.mil/dtic/tr/fulltext/u2/a454992.pdf
Shell plates subdivision looks very unprofessional for me.
Find in internet picture of such new building. Is it only shell plates problems or also hull lines?[ATTACH]
