Continuing the discussion from Complex Sweep2 (How to solve):
Pascal showed me a method that solved the problem by using -Rebuild with the option SelectMasterCurve. He was able to rebuild the curve in such a way that it had only 6 control points but retained its original shape. I have been unable to replicate this so far. Is there anyone that can explain to me how I should approach this issue?
Hi Luc - I did not do anything special other than use the master curve option. I selected one of your curves as the âmasterâ to impose its structure on the the duplicated edge curve. This makes it so all the shape curves match, and have that nice structure that is in your curves without including these curves in the rebuild - that is, I only rebuilt the one small curve from the duped edge.
-Pascal
Wow, this is very weird. It actually works perfectly well on this specific example. Iâm currently working on a new problem and as far as I know it doesnât work their. I will soon update this topic with my problem there.
newProblem.3dm (210.7 KB)
Ok so currently I am trying to deal with a new problem. Here it doesnât quite work. Do you know why?
So, on this one, the Rebuild is not enough - you need to Match the result to the surface edges and adjust with EndBulge- BUT, since your desired curve structure is degree 5, 6 point uniform curve, it is probably easier to use BlendCrv there (âEdgesâ option) and adjust the shape inside that command, rather than mess with the Rebuild.
newProblem_PG.3dm (302.5 KB)
(BTW, you can Match the shape curves directly to the surface edges - I see that you added some projected lines to the wing surfaces to match to.)
-Pascal
The BlendCrv with Surface Edges is looking very promising. Iâll let you know how it went.
Ok so I kind of cheated my way out of it, but it worked really well.
So the 5th order was an accident, so I set those curves to 3rd order.
Then I used the -Rebuild, And used Sweep2 with the new Edge Curve.
I then trimmed of the last bit and used a NetworkSrf tp finish the last part of the surface,
Itâs not very elegant. But for all intents and purposes it gets the job done.
You helped me a lot Pascal, couldnât have done it without you. Thanks!
Hi Luc- Iâm glad it worked out, but it still seems like too much fussing - hereâs the result I get from just sweeping to the nice end curve.
newProblem_PGSrf.3dm (297.9 KB)
-Pascal
Only one problem. Joining the surfaces results in a naked edge. Since this shape will be put through a CFD solver, it wonât be accurate enoughâŚ
Ah, ok - one way to clean up is MatchSrf there for tangency and 'Match by closest points, â âRefine matchâ set and âPreserve isocurve directionâ as well before sending it out
-Pascal
Thanks again!
It still tries to solve the problem in a bit of a sloppy way. Resulting in a kink in the surface (MatchSrf):
Hi Luc - It looks to me, from the image, like the match is moving things far more than should be needed - that is, the edge is not very close to begin with - it should be almost spot on. Just the sweep gets the edges to within .00015 here.
newProblem_PGSweepOnly.3dm (219.1 KB)
-Pascal
Yes, I still made a mistake somewhere. I managed to get it done in the end. Iâll give this a go and hope that the CFD analysis wonât trip over it. Thanks Pascal.
