Negative pressure on exhaust?

[freebeard]

I've a better memory for pictures than text. Sorry.

Originally Posted by Andyman

As the pipe size increases, the flow must slow down to fill that larger volume, so when the exhaust 'gets out' it's no longer trying to 'spray' ambient air out of the way.

I posited that 'disappat[ing] the exhaust without slowing it' might achieve that. The only analog I can recall is a trumpet mute.

https://trumpetheroes.com/wp-content...-1024x683.jpeg

Now I've moved on to wonder about cymatics.

edit: on the Beetle I found the model but not the .MTL file so it lost the colors and textures. I've cut away the back window and deck lid and mocked up the Coanda nozzle, but now it seems I need to master Curve to Mesh operations to move forward.

[Andyman]

That quote was from Logic, not me. He wrote it for me.

[freebeard]

I retract any and all attribution. That's easier than going back over everything from Permalink #25 and onward.

Could one combine cymatics and the Tesla one-way valve? Vary the size and spacing of the convolutions to address a wide[r] range of frequency?