Delftship free – heeled hydrostatics – fail computing Cp
› DELFTship forum › Hydrostatics and stability › Delftship free – heeled hydrostatics – fail computing Cp
- This topic has 2 replies, 2 voices, and was last updated 10 years, 1 month ago by
Sailboats.
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January 26, 2013 at 22:27 #36515
Sailboats
ParticipantDSfree 5.26.228/32 bits computes Cp as half the real one, when in heeled hydrostatics.
It can be corrected activating “symetry” in the layer, but then all other values get wrong.
I think this doesn’t happened with previos versions, is it possible to download previous versions again?.
Attached file -
January 30, 2013 at 18:26 #36518
Icare
ParticipantTwo years ago I asked a link to download a FreeShip’s old version for my old computer. Check for the last but one post on this thread:
http://delftship.net/delftship/index.php/forum/feature-requests/1452-delft-ship-older-versions?limit=6&start=6
But I’m affraid that by now, it’s too old for you 😉
An important point: If you try to open your file (using a DS’ older version than the one you used to design your model) it will probably not work. So you’ll probably have to draw all your model again using the older version… :S
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January 30, 2013 at 18:55 #36519
Sailboats
ParticipantThanks Icare, I’ll give it a try.
About the Cp issue, I found it’s not related to heeling hydrostatics but to Symetry.
I made an horizontal cylinder, half inmersed, and unchecked the symetry box (in order to avoid volume duplication). Cp should be 1.0, but Delftship shows 0.5
I wonder if Delftship Pro shows the same issue.
Cylinder attached
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