GSMAC-DF Interface
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The ICEM-CFD/gsmacDF translator creates a formatted input file necessary
to run the GSMACS-DF solver.
Creating the GSMAC-DF Input Files
The translator writes the GSMAC-DF input files using an unstructured domain
file and its corresponding boundary conditions file. To create the GSMAC-DF
input file, select the translator "gsmacDF" in the "Output" menu from the
ICEM CFD/CAE Manager. After clicking "gsmacDF input" you can specify options
for the interface:
-
select an existing unstructured domain file.
-
select the existing boundary condition file.
-
specify the name for the GSMAC-DF input file (default is gsmacDF).
Two files are created, the mesh and boundary condition file (.msh) and
the initial value data file (.val).
-
specify the scale factor (default is 1.0).
The GSMAC-DF formatted input files contains the following information:
Mesh and boundary condition file (.msh):
-
Nodes information:
-
- total number of nodes
-
- nodes ID number
-
- nodes coordinates (x,y and z)
-
- boundary condition flag
-
Elements information:
-
- element ID number
-
- connectivity: if the element has a boundary face, than instead of its
neigbor, the boundary condition flag is written.
-
Periodicity:
-
- number of periodic pairs
-
- periodic node ID number
Initial value data file (.val):
-
Number of nodes and elements
-
Velocity vector (u, v, w) for each node
-
Pressure (p), droplet volume (dvol) and number of droplets (anp) for each
cell
Defining boundary conditions
The interface supports the following boundary condition flags:
| Boundary Condition Type |
bcname |
bcflag |
| Inside |
(default) |
0 |
| Wall no slip |
(default) |
1 |
| Stress free outlet |
FOUTL |
2 |
| Fixed velocity |
FVELO |
4 |
| Slip on XY plane |
FSYMZ |
11 |
| Slip on YZ plane |
FSYMX |
12 |
| Slip on ZX plane |
FSYMY |
13 |
| Wall reflection |
FREFL |
1 |
By default, internal nodes are assigned a bcflag equal to 0 and the
boundary nodes a bcflag of 1. To specify bcflag values other than
the defaults, specify one of the optional bcname to a pre-selected family.
This is done using the b.c. GUI in MED, or using the b.c. menu in MULCAD
or DDN Mesher interface:
MULCAD
DDN-Mesher
------
----------
1.FLAG
1.string1 Enter the BCNAME string
Initial value data can also be defined in MED.
Limitations
-
This fonction does not support structured grid.
-
Supports only mesh composed of 8-nodes hexahedral elements.
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