Fluid Dynamics Frequency Equation 1

[ducatidd]

Hi guys,

I have a small problem and iam trying to find a solution to, the solution would be the right equation that i should be using and hoping that some of you could lead me inito the right direction into finding it:

I am trying to create some water waves ontop of a water surface by using compressed air, through nozzles that are placed directly above the water surface. those waves that I am trying to create are extremely small, less 1mm in amplitude possibly, and I was wondering if there is an equation that could help me determine the Amplitude.
My givens, are the pressure at which the gases are supplied and will be applied at, the densities of the fluids, and the angle of the nozzles.

I really appreciate all of your help and hope to hear from you guys soon..


Thanks,
D

 

[ducatidd]

Sorry , iu forgot to add that the Temperatures will also be given.
Thanks
D

 

[ducatidd]

anyone?
Thnaks

 

[IRstuff]

You should, perhaps. RF this posting and re-post in forum321, which deals with marine/ocean engineering topics. Not sure that it would be any better, but it's closer to your question than this forum is.

TTFN

FAQ731-376

 

[BigInch]

I wonder what's the windspeed and fetch needed for 1 mm waves? Is that 1 mm trough to crest? Would that be a 100 year storm by any chance? Any beach shoaling effect? Sorry there ducatidd, couldn't help myself. <apologizing profusely>

Seriously, I don't think the ocean wave theories scale down that small. Best to leave it here.

**********************
"Pumping accounts for 20% of the world’s energy used by electric motors and 25-50% of the total electrical energy usage in certain industrial facilities."-DOE statistic (Note: Make that 99% for pipeline companies)

http://virtualpipeline.spaces.live.com/

 

[cloa]

These are most complicated waves as suggested by

http://en.wikipedia.org/wiki/Ripple_(fluid_dynamics)

 

[cloa]

http://www.google.com/gwt/n?u=http://www.sklogwiki.org/SklogWiki/index.php/Capillary_waves

 

[BigInch]

Couldn't read that one. Switch to HTML.

http://www.sklogwiki.org/SklogWiki/index.php/Capillary_waves

Now that's interesting.

**********************
"Pumping accounts for 20% of the world’s energy used by electric motors and 25-50% of the total electrical energy usage in certain industrial facilities."-DOE statistic (Note: Make that 99% for pipeline companies)

http://virtualpipeline.spaces.live.com/

 

[ducatidd]

thanks guys, atleast this could direct me into the right path.
Thanks

 

[BigInch]

I'll give cloa a star for you.

**********************
"Pumping accounts for 20% of the world’s energy used by electric motors and 25-50% of the total electrical energy usage in certain industrial facilities."-DOE statistic (Note: Make that 99% for pipeline companies)

http://virtualpipeline.spaces.live.com/

 

[ducatidd]

sorry but what's cloa?

 

[btrueblood]

cloa is the guy who answered your question. BigInch is the guy who suggested giving him a star - you might want to do the same, if you feel he (and others here) hgave you some useful advice.

 

[sailoday28]

Google or search "wave equation, small perturbation theory"

Regards