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Old   September 16, 1998, 15:44
Default Looking for a CFD Code
  #1
nt
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I am looking for a CFD code, which can potentially handle solid-fluid interaction. Let us say that I have a long tube and on its one end, there is a disk, that almost closes the tube. Now, when the disk vibrates, the air in the tube moves. Is there a code which can handle such issues.

Kindly post your response on the internet as well as email it to me.
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Old   September 17, 1998, 14:42
Default Re: Looking for a CFD Code
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Adrin Gharakhani
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Is this an axisymmetric problem? i.e., does the disk center pass through the tube centerline, and is the direction of vibration axial?

Also, what are the frequency of vibration, tube diameter and mean axial flow velocity?

Adrin Gharakhani
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Old   September 17, 1998, 23:14
Default Re: Looking for a CFD Code
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Hansong Tang
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Maybe one of my codes can handle this.

I have a code for 1 dimensional wave problems in coupled systems of solid-water-gas phases. The solid can be elastic or plastic, the water and gas can be compressible. Also, the code can deal with onset and development of fracture in the code and cavitation in the water and gas. The code is made according to a robust numerical scheme we proposed recently.

If your problem can be considered as a 1 dimensional problem, I suppose that our code give a good result.

Hansong Tang
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Old   September 18, 1998, 13:44
Default ntiwari@juno.com's response
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Adrin Gharakhani
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I'm sending the following as per ntiwari@juno.com's request:

I cannot post this response on the internet since this is a juno acc. It will be kind on your part if you could do that for me.

The problem is not axi-symmetric.

I am looking for something like a "frequency response" of the system. i.e. When the disk is subjected to vibrations of a particular frequency, what will be the steady state response of the fluid in tube. I am looking for a code that solves the problem numerically, since there will be a whole range of these types of problems in my research area. Also, I know that I can solve the problem by finding the transient response of the system, but then it will take me a long time to find the steady state response of the system. In solid structures, you can directly find the frequency response of the system. I am not sure if something similar can be done in the world of fluids.
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Old   September 21, 1998, 08:46
Default Re: Looking for a CFD Code
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Elliot Schwartz
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Try ANSYS, a finite element code. There are modules for finite element structural and acoustics modeling. The acoustics module can solve steady-state problems and handle fluid-solid interactions.

The Web site should be http://www.ansys.com and the company is based in Canonsburg, just outside Pittsburgh.

Good luck.

Elliot
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Old   September 23, 1998, 01:28
Default Re: Looking for a CFD Code
  #6
KwangWon Suh
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CFDRC handled this problem for a long time though it haven't released it commercially yet. I believe it will be available soon or you may have it ot the consulting base. If you need more information, please visit http://www.cfdrc.com

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