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where does wall boundary condition is defined?

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Old   January 23, 2013, 06:36
Default where does wall boundary condition is defined?
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Ehsan
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i cant find wall BC in src.where it is defined?
I want to see how its impermeability is defined.
Thanks.
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Old   January 23, 2013, 06:42
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Ehsan,

Wall is not a boundary condition, but an attribute to the patch. Please read the third paragraph in my previous post to you again:

conflict between boundary and blockMeshDict?

A patch with the attribute "patch" can easily act as a wall, if you give noslip on velocity and zeroGradient on the pressure.

Furthermore, you keep posting similar questions in a lot of new threads. This will only results in a lot less searchable forum, so please modify your behaviour.

Kind regards,

Niels
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Old   January 23, 2013, 07:37
Default how can use a property at a point in groovyBC?
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i want to use value of pressure at a point to set a boundary condition.more clear i need to set a p0,T0 boundary condition when shock is reached at the end of the channel.what command shouldp i use at fractionExpression?
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