User Defined Function (UDF) for CFD Analysis of Thermoacoustic Phenomenon

May I be the first to say, "Welcome aboard"...!

No familiarity with Ansys-Fluent before seeing your post ... but (with my keen interest in all things within the realm of ultrasonics), the expression "thermoacoustic phenomenon" got my interest piqued.

I could be wrong, but, I suspect that other viewers of your post might LIKEWISE be interested to hear a few more details, regarding the nature of the phenomenon that you are interrogating, and the arena in which it is/was observed.

This might be way off-base ... but, have you considered whether the version of the software that you are using possesses the capability required in order to proceed...?

Looking forward to following any progress here. "Best Wishes" ~

Hello Sir,

Thank You for your interest in my forum.

Thermoacoustic is the combine science of Thermodynamic(Heat transfer) and Acoustic.

If we provide heat input to the thermoacoustic engine, it will give the souund wave out put which is one kind of pressure wave and which can be utilized to do work, So we can say thermodynamically, it is heat engine.

Similarly, If we give input of pressure wave it can transfer the heat from low temp to high temp with some modification in device and It is Thermoacoustic refrigerator.

Later on I will give you the detail information on this.

Thank you.

Regards,

Chirag Fadadu.

I remain captivated here ... The statement: "... (with) input of pressure wave it can transfer the heat from low temp to high temp, and with some modification in the device it is a thermoacoustic refrigerator" leaves me a bit perplexed.

Of course , this is analogous to the mechanism of a typical a/c or refrigeration unit:

["...spontaneously, heat always flows to regions of lower temperature, never to regions of higher temperature without external work being performed on the system"] The "work being performed" precludes violation of thermodynamic law.

Can you explain (reflecting on your sketch): where is the 'work' effected? What difference(s) occur if the two plate materials are different? Likewise, what changes are effected by differences in the thicknesses / thinnesses of the two plates? Is this phenomenon ONLY experienced using certain "select" materials (I would assume)?

Is there an official "name" for this transducer-effect?

"More" , please ... !