Oh come on, a billion particle simulation is big in any book. Yes, computer power means it is possible, but is it necessary? Oil rigs are not...
What is the actual point of that oil rig simulation? 92 hours of run time to solve 12 seconds, using hugely powerful computers is wholly...
I think one idea that shows great promise is wind energy. I'm imagining a system where airfoils are placed above the boat hull, to capture the...
Thanks for these. I actually contributed to the first one, but the second one is full of useful links and great discussion.
Ah thanks. I think it is an iPad thing :( will try the pc tomorrow.
Well, I’ve not managed to track down a copy of the 1957 proceedings but there are plenty of mentions in the literature that it is “just” a...
Thanks Leo, I found that, but it appears just to be a table of contents (at very high level), with no way of seeing the actual content. The...
Hi, Can anyone point me towards the transactions of ITTC 1957? I am trying to better understand the limitations of the friction coeffient...
This report is a bit confusing. Were there just 5 on the upper deck, or "most" of the 27? The boat is supposedly able to carry 50....
With so much of the drive of a sail coming from the aft 1/6 of the sail, does this go some way to explaining the performance of square top mains?...
Ignoring all theoretical discussions that will doubtless follow, there are very few real examples of boats with truncated, cut off, backs. A Class...
Sorry, I typed it on the phone, so my answer was brief!
Curved buttocks (and rocker) can induce low pressure in the water flowing past (just like on the lee side of a sail) which sucks the hull down,...
I wonder if some of the confusion around needing to exceed hull speed to plane is because the early studies were on large, untrimmable, vessels....
Thanks. I don't know how long or fast sculls are but I am certain that they don't plane are are not capable of planing whilst being rowed....
You're right in that it doesn't matter if a boat is planing or not (although the Racing Rules of Sailing allow pumping only to promote surfing or...
PAR, I do disagree - at least with the inference that planing and S/l are related. Planing occuring at S/L 0f 3 is just a rule of thumb for...
I totally agree with this. Far be it for me to criticise the work of Prof Dan Savitsky, but his papers all intimate a link between Froude number...
This really shows the importance of good battens!
I'd be really interested if you could measure the angle SS. I know Bethwaite claims the Tasar has a half angle of 11 degrees but that is a...
