Harmonic pressure distribution

[jam007]

Van Nostrum!

Don´t try to hide behind talk of being a ridiculed truthsayer! Thats just despicable. We want reason.

Give us a readable explanation of your theory and as it is a new one give us also experiments and data that supports your theory. Explaining to others and letting other people test your ideas that is science!

Anders M

[Tim B]

Van Nostrum,

Perhaps you would be as kind as to show me the error of my ways... how does one convert a Cp into a Pressure?

And further to that, isn't Force = Pressure * Area ? or is everybody lying to me.

I'm not concerned with the calculation of pressure distribution, in this case, merely considering the problem.

Tim B.

[chandler]

Bergalia, I believe it's spelled condom. However it's been so long since I've had the need to use one perhaps they have changed the spelling. And what's this crap about the world not being flat???

[Leo Lazauskas]

Are there any publications that detail the theory? Who is this person "Michel" to whom you refer? There are several scientists with that surname.

Leo.

[marshmat]

Van Nostrum,
Try not to worry too much about the naysayers at the moment.
The physics world knows that there's a lot about harmonics in fluids, and stuff like that, that we really don't understand too well. I would appreciate it if you could post a link to a peer-reviewed article on the subject, that we may peruse at our leisure. Until I see some supporting studies, I have no reason to either doubt or support your hypothesis.
(PS- in an earlier post, you mentioned the differential between turbulent transition velocity and the cavitation point. I'm not quite sure what this has to do with harmonics- isn't a correctly shaped foil supposed to operate in a laminar flow condition at its design velocity? I would think harmonic effects would relate more to the pressure distribuion along the foil surface, rather than to a turbulent condition that should not be happening.)

[JonathanCole]

Van Nostrum,

If you have studied the subject for ten years, don't expect others to understand what you are talking about with a few paragraphs of technical jargon. Better to introduce the subject gradually using everyday vocabulary.

Also there is one grouping of boatdesign.net people that are notoriously rude. I think they have some buccaneer genes in there somewhere but their great grandmothers wouldn't admit it to their husbands.

[Wynand N]

Van Nostrum, Martin I believe you real name is Frank, aka Mighetto.
Everything you wrote, your logic and lack of common-sense points in that direction....

[Deering]

Van Nostrum,

Are you describing the principal of super-cavitation? That's a concept the Navy has been working on which purposely induces cavitation zones around high-speed objects like torpedoes - the idea being that the torpedo (or whatever) can travel faster through water vapor than through liquid water.

Not sure how that relates to foils, but I'm willing to make the stretch if you can articulate it sans techno-babble. If that's not what you're trying to describe, then I simply don't have a clue what you're talking about.

[D'ARTOIS]

Wynand, I thought likewise (similar textstyle); Mr Van Nostrum (family of "Nostradamus"?) what are you trying to tell us?: could you give me a live example? A ship is full of foiling issues, as it moves in an aerodynamical as well as a hydrodynamical environment, where the forces that play a role in those two will have of course some influence on the performance of a certain vessel.

The bare fact tha nobody seems to know what exactly the issue of your post is, requires further accurate information.

And indeed, who is Michel? In France, there are several million of people called "Michel" - if you were talking about "Michelet" it would be much clearer to me, but a further clarification would be highly appreciated and welcomed.

[Bergalia]

Originally Posted by chandler

Bergalia, I believe it's spelled condom. However it's been so long since I've had the need to use one perhaps they have changed the spelling. And what's this crap about the world not being flat???

Quite possibly you are correct on the spelling, Chandler...Never actually got around to buying a packet as a youth (In those days manufactured by Dunlop - 'Sure Grip in The Wet'...) because I always lost courage and walked out with toothpaste, or pile gel...(Got really gleaming piles...and I fart peppermint....)
And of course the earth is flat...bloody oceans would fall off it was curved...The man is obviously demented....

[yokebutt]

See what can happen when you don't use a condom?

Y.

[Bergalia]

Originally Posted by yokebutt

See what can happen when you don't use a condom?

Y.

Don't tell me, Yoke...tell his parents...

[yokebutt]

Sorry for being a little cranky, probably due to a lack of some good "dynamic pressure distribution" action.

Yoke.

[Bergalia]

Originally Posted by yokebutt

Sorry for being a little cranky, probably due to a lack of some good "dynamic pressure distribution" action.
Yoke.

I believe Van Nostrum recommends wearing a kilt whilst playing a piano underwater for such a disposition...unless I misunderstood...

[chandler]

Yoke,
Did you mean harmonic pressure distribution? There's a huge difference!