COMBUSTION CHAMBER(3-D) MESHING WITH GAMBIT
In this study, we created the geometry
for the burner using geometry construction method in GAMBIT. We used for
meshing the unstructured
hexahedral mesh.
In this tutorial we learnt how
to :
-
Move a volume
-
Substract one volume from another
-
Intersect two volumes
-
Blend the edges of a volume
-
Create a volume using the sweep face
option
-
Prepare the mesh
To complete this study you have to
read before the GAMBIT using guide, to familiarise with the GAMBIT interface.
Problem
Description
The geometry consists of modeling
a combustion chamber. We modeled only one quarter of the burner geometry,
because of the symmetry of
the geometry.
Strategy
Geometry
We created the combustion chamber
geometry using the predefined volumes(cylinder,bricks) and play with boolean
operations to unite,
intersect and substract to obtain
the basics geometry. We used too the blend command to give a more rounded
shape. After this step we created two small volumes inside the chamber,
and we split these three volumes to be mesh individually.
Meshing
In this study we using the Cooper tool to mesh the chamber.
The Cooper tool requires two group of faces, one parallel to the sweep
path and the other group perpendicular to this direction.This the reason
we created the two small volumes and we split them. We have to choose the
main direction for the Coopeer meshing , the geometry is in the z direction
and most of faces are perpendicular to this direction, z should be
chosen as the main diection.We could then meshed individually the three
volumes.
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