# modelling a vibrating circle

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 February 14, 2007, 12:12 modelling a vibrating circle #1 Yasin Allyjaun Guest   Posts: n/a Hi Part of my project is to attempt to model a pulsating circle. I'd like to see it create variations in the pressure of the fluid, the output would look like the ripples in a pond when a stone has been thrown in. Have no idea where to start so any information, no matter how basic would be much appreciated. I am new to the product so keep answers as simply put as possible please. Thanks

 February 14, 2007, 12:39 Re: modelling a vibrating circle #2 Harish Guest   Posts: n/a What kind of oscillations the circle performs.There are many analytical solutions available for radially oscillating problems.Check any book on acoustics.

 February 14, 2007, 13:11 Re: modelling a vibrating circle #3 Yasin Allyjaun Guest   Posts: n/a A simple sinusoidally varying oscillation will do, any books in particular that you'd recomend, preferable directly compatible with FLUENT? Also i have been told that the problem involves dynamic meshes, are there any help guides that you would advise?

 February 14, 2007, 13:35 Re: modelling a vibrating circle #4 Harish Guest   Posts: n/a Acoustics book by Morse and Ingard is a classical book and you can find many similar problems in there.As a first step I would not advice using a dynamic mesh since your oscillations are just sinusoidal.Look in the literature.The sinusoidal oscillations can be used as a boundary condition for solving the problem rather than using dynamic meshes.

 February 15, 2007, 23:46 Re: modelling a vibrating circle #5 prapanj Guest   Posts: n/a I suggest you try using matlab for solving this problem. If the governign equations are simple, u can easily code them. lots of visualization tools too. with regards prapanj

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