meaning of this symbol ".*"

Ahmed Khattab · February 28, 2013, 05:54

Hi Foamers,

good day for you all, I'm work working with chtMultiRegionFoam, in changeDictionaryDict file there is a symbol i can't understand ".*" like this boundary conditions for pressre

Code:

  
  p_rgh        
    {
        internalField   uniform 0;

        boundaryField
        {
            ".*"
            {
                type            buoyantPressure; 
                value           uniform 0;
            }

i don't understand which patch exactly is descried by this BC, this make me experience great problems with pressure BCs.

thanks in advance.

Bernhard · February 28, 2013, 08:05

The dictionary files accept regular expressions. The . means any charachter, and the * any amount times. So this would basically match ALL boundaries.

February 28, 2013, 05:54	*meaning of this symbol "."**	#1
Ahmed Khattab Senior Member ahmed Join Date: Feb 2010 Posts: 182 Blog Entries: 1 Rep Power: 16	Hi Foamers, good day for you all, I'm work working with chtMultiRegionFoam, in changeDictionaryDict file there is a symbol i can't understand "." like this boundary conditions for pressre Code: p_rgh { internalField uniform 0; boundaryField { "." { type buoyantPressure; value uniform 0; } i don't understand which patch exactly is descried by this BC, this make me experience great problems with pressure BCs. thanks in advance.

February 28, 2013, 08:05		#2
Bernhard Senior Member Bernhard Join Date: Sep 2009 Location: Delft Posts: 790 Rep Power: 22	The dictionary files accept regular expressions. The . means any charachter, and the * any amount times. So this would basically match ALL boundaries. Ahmed Khattab and Mojtaba.a like this.

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