wave celerity

No idea about the equation...dunno what celerity is...but

To avoid your 'should I add the velocity caused by the pump' question can't you design an end to the channel which will dissipate the waves without reflection?....maybe some sort of diffration grating type thing or an artificial reed bed?

Heck it sounds like fun, they sometimes let me play with water and pumps and LEDs too at work which is pretty exciting if you are a cat.

Del

(Just looked it up.. it seems disingenuous to use a word like that when 'speed' would have done just as well)

oceanworld.tamu.edu/resources/ocng_textbook/chapter16/chapter16_01.htm - 21k -

Dear Cat,

I presume that all cats you are curious so here is a link to look so that next time you do not say "no idea" any more.

For the question I think that the waves equation considers a volume of water without any other movement. In the case s described there is a "transport" velocity and the wave velocity has to be considered as relative so that the absolute celerity (from latin celere rapid) will be the summ of both.If the transport velocity is small then it will have no major influence .

Regards

I don't know the answer to your question, but I'll give you two links to other forums to try. One of these forums (I have no idea which - say, do you know anything about memory loss?) has a really good fluids guy, so you might post on both.

http://www.physicsforums.com/

http://www.scienceforums.net/forum/

But, if you have a few minutes, tell us about your work. It sounds interesting. Are you doing estuary flow?

There is two way of looking at this. You pump the water into a settling pond and allow it back into the main stream. that way the celerity should be constant. If you pump the water back directly into the main wave chamber the celerity would be difficult to measure, because you have less control of the celerity over-all. This is crucial because shallow waves touch the bottom. If a flow is introduced it could stop some true celerity measurement as the wave will not always be allowed to touch the bottom. I have know idea what size your pool is, but it does not need to be very large to measure celerity of an enclosed water like a lake. If you are trying to find the celerity in quite shallow water it is bound to be affected by the introduction (and loss) of water whose energy should be part of the whole equation? You are guessing what the effect of the flow will be. The celerity would be much easier to estimate and anticipate with a wave induced into a solid body of water. The measurements are quite critical at shallow depths, so any possible deviation should be prevented. Can you not redesign the wave maker with a 'comb' along the bottom edge which would allow the waves to leave the wave board and you could be able to predict any disturbance. It could be you have too large a wave maker for your pool?

I hope you find what you are looking for and manage to design out any induced irregularities in your tank waves. Take care and happy holiday.....................