[CIG-LONG] Velocity boundary conditions in Gale 2.0.0

[Walter Landry]

Rainer Nerlich <rainer at simula.no> wrote:
> Dear Mr. Landry,

I am Cc'ing the list in case anyone else has a similar problem.

>  I am a PhD student in Oslo/Munich and trying to set up a 3D model in Gale
> 2.0.0 using velocity boundary conditions. I would like to specify boundary
> conditions on five sides of the box which would require 15 files if each
> velocity component is kept in a separate file. However, Gale allows only 10
> files, but I assume it is possible to include all vector component data in
> one file for each respective boundary - though, I couldn't figure out what
> exactly I have to do to make this work.

Actually, it is not possible to do this.  The simplest solution to
this is to increase the number of input files.  I have pushed a change
that increases it to 20 (0-19).  Are you able to compile the code from the
repository?

Cheers,
Walter Landry


>  The following lines are an example of what I have tried among other things
> for the right boundary with only zeros in the data file with respect to the
> velocity components.
> 
>  *1.Part:*
> 
> {
> 
> "type": "WallVC",
> 
> "wall": "right",
> 
> "variables": [
> 
> {
> 
> "name": "vx",
> 
> "type": "func",
> 
> "value": "File1"
> 
> },
> 
> {
> 
> "name": "vy",
> 
> "type": "func",
> 
> "value": "File1"
> 
> },
> 
> {
> 
> "name": "vz",
> 
> "type": "func",
> 
> "value": "File1"
> 
> }
> 
> ]
> 
> },
> 
>  *or *
> 
>  {
> 
> "name": "vxyz",
> 
> "type": "func",
> 
> "value": "File1"
> 
> }
> 
> ]
> 
> },
> 
>  *2.Part:*
> 
> "File1_Name": "input/cookbook/velocity/test",
> 
> "File1_Dim": "2", [I use 2 because it is a 3D file]
> 
> "File1_N": "21" [I specify 6, because there are 6 rows in the data file]
> 
>  *3.Part:*
> 
> data file called “test”:
> 
>  0.0 0.0 0.0 0.0 0.0
> 
> 0.1 0.1 0.0 0.0 0.0
> 
> 0.2 0.2 0.0 0.0 0.0
> 
> 0.3 0.3 0.0 0.0 0.0
> 
> 0.4 0.4 0.0 0.0 0.0
> 
> 0.5 0.5 0.0 0.0 0.0
> 
> I tried various different ways for each part, but nothing worked. Could you
> please be so kind to explain what I do wrong and at best send me a 3D
> example where the velocities are read from a file.
> 
>  Thank you very much in advance and best regards,
> 
> Rainer Nerlich