Learning Forum

[Kauê Castro]

Greetings.. Im studying forms of controlling fluid jets using periodic excitation as in the blowing and sucking of a subwoofer of some sorts. I need help on two regards:
Firstly, I am having trouble simulating the simple case of only the jet, that is, the residuals are not decreasing after a given amount of iterations, would the problem be my mesh?
And, I don't have a clue on how to introduce an external periodic excitation as I said. Is there any feature that enables me to simulate a subwoofer, or vibrate the flow in a given part of the inlet boundary?

[Rob]

What sort of frequency are you going to excite the jet at?  Without seeing the model I can't comment on convergence, so please post pictures. Contours of velocity & velocity vectors would be a good starting point. I assume you're running transient? 

Have a look for fluidic switches on Google. 

[Rob]

/forum/forums/topic/how-to-input-a-periodic-excitation-to-a-flow-or-jet/