Accuracy resistance calculation
› DELFTship forum › Feature requests › Accuracy resistance calculation
 This topic has 4 replies, 3 voices, and was last updated 12 years, 10 months ago by Lim Adriaenssens.

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August 13, 2011 at 14:33 #35016Lim AdriaenssensParticipant
Dear all
I understand the resistance calculations from Delftship are based on the Delft Systematic Yacht Hull Series.
Is there an indication or a set of ranges for parameters that can be used to check if the resistance calculation for my model is correct?Cheers
Lim 
August 14, 2011 at 00:06 #35017Luka DjigasParticipant
The most accurate resistance prediction verification is always testing in nature. Towing tank tests come after that, and in general also produce “safe results”.
Since that is out of the question (I guess), one can either compare results of his calculation to a similar, already built boat, or trust the prediction method. Delft series are a trusted and used method for somewhat older yacht designs – it has also been “redone” a few times by different authors (regression has been redone, and therefore results vary a small amount) – but if your hull fits the design parameters of the series, you should be fine.

August 14, 2011 at 00:55 #35018Lim AdriaenssensParticipant
Dear Idigas
Thank you for the clarification. You speak of the design parameters of the series. Where can I find those?
Cheers
Lim 
August 15, 2011 at 15:27 #35022Razmik BaharyanParticipant
Freeship plus Manual15.5.1

August 15, 2011 at 17:06 #35023Lim AdriaenssensParticipant
Thank you very much!
Cheers
Limt


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