Generating shockwave underwater

dreamchaser · June 19, 2012, 15:21

Hey guys,

I'm trying to do a simulation where I generate a shockwave underwater. I want to generate a shockwave at a certain point and see how it interacts with a surface.

Whats the best way to do this??

I'm thinking about creating two domains. One will be a small cirlce around the selected coordinate point. The other domain will be a big square enclosing the circle.
Then I'm thinking about defining a region of air inside the circle???

I"m really lost on this one. Please give me some guidance.

ghost82 · June 20, 2012, 11:20

mmm..I think you can create the shockwave with a moving wall..
You can use dynamic mesh and moving a wall to create the shock wave.
Remember to include water comprimibility and sound speed through udf; you can copy directly from udf manual available online.
I have successfully simulated an ultrasound cleaning bath with moving wall+sound speed+comprimibility, to see sound waves propagation.

Daniele

June 19, 2012, 15:21	Generating shockwave underwater	#1
dreamchaser Member Mike Join Date: Jun 2012 Posts: 58 Rep Power: 15	Hey guys, I'm trying to do a simulation where I generate a shockwave underwater. I want to generate a shockwave at a certain point and see how it interacts with a surface. Whats the best way to do this?? I'm thinking about creating two domains. One will be a small cirlce around the selected coordinate point. The other domain will be a big square enclosing the circle. Then I'm thinking about defining a region of air inside the circle??? I"m really lost on this one. Please give me some guidance.

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June 20, 2012, 11:20		#2
ghost82 Senior Member Rick Join Date: Oct 2010 Posts: 1,016 Rep Power: 28	mmm..I think you can create the shockwave with a moving wall.. You can use dynamic mesh and moving a wall to create the shock wave. Remember to include water comprimibility and sound speed through udf; you can copy directly from udf manual available online. I have successfully simulated an ultrasound cleaning bath with moving wall+sound speed+comprimibility, to see sound waves propagation. Daniele