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Forum: CFX

March 21, 2011, 01:55

Replies: 6

Free Surface not exactly at mean water level

Views: 2,096

Posted By FluidH

Thanks! I get the point. The free surface will...

Thanks! I get the point. The free surface will always lie between some grid cells, so the free surface accuracy will be +-the smallest element size.
As you say one can move the initial free surface...

Forum: CFX

March 18, 2011, 10:14

Replies: 6

Free Surface not exactly at mean water level

Views: 2,096

Posted By FluidH

Thanks for your answer, but maybe I don't...

Thanks for your answer, but maybe I don't understand this blurring function.
The free surface will in general always be evaluated over some grid cells, as my figure shows.

Do You mean that...

Forum: CFX

March 13, 2011, 06:27

Replies: 6

Free Surface not exactly at mean water level

Views: 2,096

Posted By FluidH

The figures shows the isovalue of the...

The figures shows the isovalue of the water.volume fraction at 0.5, Wich will be the location of the free surface in a 2 phase flow between air and water.
The lowest one shows a closer view at x=3m...

Forum: CFX

March 12, 2011, 04:41

Replies: 6

Free Surface not exactly at mean water level

Views: 2,096

Posted By FluidH

Free Surface not exactly at mean water level

Hi!

I am simulating a free surface problem and have some problems with the initial results.

The problem appears when I have several sections in the domain.
The initial free surface then get...

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