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-   -   difference between interface compression and interface reconstruction (http://www.cfd-online.com/Forums/cfx/126570-difference-between-interface-compression-interface-reconstruction.html)

Niru November 20, 2013 20:43

difference between interface compression and interface reconstruction
 
In CFX, the free surface model with surface tensio force used interface compression. How is this different from interface reconstruction like PLIC algorithm. Can know the pros and cons of both.
What software uses interface reconstruction and compression.

Niru November 20, 2013 20:45

interface drag in homogeneous free surface model
 
why is interface drag not modelled in homogeneous free surface model.

ghorrocks November 21, 2013 05:02

CFX uses a compressive scheme for the volume fraction. It does not have a reconstruct scheme like Fluent does.

There is no interface drag in homogenous flow - both phases by definition are moving with no relative slip because they are homogeneous! That is why there is no interface drag model.

Niru January 5, 2014 15:01

compresive scheme
 
Can you please explain me how compressive scheme for volume fraction works in CFX. Are there any related equations.

ghorrocks January 12, 2014 07:11

I am not sure if it is in the documentation. If you cnanot find it then ask ANSYS support. I think the ANSYS CFX multiphase training course also covers it.

Niru January 20, 2014 17:05

Quote:

Originally Posted by ghorrocks (Post 469660)
I am not sure if it is in the documentation. If you cnanot find it then ask ANSYS support. I think the ANSYS CFX multiphase training course also covers it.

Ok, I got the details of the model. Thanks.

mvo July 14, 2016 11:29

So far as I know uses ANSYS the CICSAM method for reconstructing the free surface. but I'm not 100 percent safe

here the link:
PHP Code:

http://www.ptmts.org/Waclaw-Koron-2-08.pdf 


ghorrocks July 14, 2016 19:08

No, this is not correct. ANSYS CFX uses the compressive scheme (as mentioned previously in this thread).

ANSYS Fluent has CICSAM as an available option, you might be confused with that.

mvo July 16, 2016 04:11

Oh sorry for my mistake. I should read before i post something.


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