Pressure in fluid region

kkh · June 9, 2011, 08:12

Hi everybody

I've been attempting to simulate an underwater explosion using the adiabatic bubble model, following the approach described by Tony Hirt in FSI-89-TN22. However, I'm having a hard time setting the pressure in the initial explosion gas bubble (PREG) to a different value than the initial void pressure (PVOID). It seems like PVOID is overriding PREG somehow.

I'm using v9.4.5 on a WinXP x64 machine. Any hints would be highly appreciated.

dreamchaser · July 23, 2012, 14:37

Hey,

i am trying to simulate an underwater explosion.
I want to see how the shockwave behaves with a surface.

How did you generate your bubble model?
Did you use Fluent?

I am thinking about creating the bubble by generating a high energy source at a point in the domain.

I would really appreciate any kind of help you can provide.

thanks!!

June 9, 2011, 08:12	Pressure in fluid region	#1
kkh New Member Kjetil K. Heggernes Join Date: Mar 2010 Location: Bergen, Norway Posts: 3 Rep Power: 16	Hi everybody I've been attempting to simulate an underwater explosion using the adiabatic bubble model, following the approach described by Tony Hirt in FSI-89-TN22. However, I'm having a hard time setting the pressure in the initial explosion gas bubble (PREG) to a different value than the initial void pressure (PVOID). It seems like PVOID is overriding PREG somehow. I'm using v9.4.5 on a WinXP x64 machine. Any hints would be highly appreciated.

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July 23, 2012, 14:37		#2
dreamchaser Member Mike Join Date: Jun 2012 Posts: 58 Rep Power: 13	Hey, i am trying to simulate an underwater explosion. I want to see how the shockwave behaves with a surface. How did you generate your bubble model? Did you use Fluent? I am thinking about creating the bubble by generating a high energy source at a point in the domain. I would really appreciate any kind of help you can provide. thanks!!