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Axisymmetric 2D Convergent-Divergent Boattail Nozzle Simulation Using CFD-FASTRAN |
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The NASA D-1.22-L boattail nozzle configuration was
obtained from the MADIC (Multidisciplinary and Design Industrial Consortium)
program. The geometry definition and the flow conditions are documented in NASA
TP 1766 [1]. This user tip presents a validation of numerical methods against
experimental data.
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Integer Cell Size Specification in CFD-VisCART |
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As it was explained in a previous tip called Understanding cell-splitting in CFD-VisCART and its effect on cell count, a small change in
a specified cell size could lead to drastic changes in the cell count due to
the cell-splitting rules used by CFD-VisCART.
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Parametric studies using CFD-GEOM and SimManager |
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Parametric studies controlled by SimManager give the useful ability to perform several
routine simulations. It allows to use CPU time more effectively and reduce user interaction.
In other words, it is possible to automate the process of mesh generation in GEOM, model setup
in CFD-AGE-GUI, solver run, and visualization in CFD-VIEW. In this user tip, automatic
geometry manipulation and mesh creation will be discussed.
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Scripting and Journaling in CFD-GEOM V2007.2 |
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In CFD-GEOM V2007.2, scripting and journaling are now available.
Several improvements have been made to scripting, such as fewer modules
that are arranged in a more logical manner, more robust functionality,
etc. As in previous versions of CFD-GEOM, the Python scripting
language is still used to create the CFD-GEOM scripting functions. If
you are interested in scripting and journaling in CFD-GEOM, please read
on.
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Turbulence Solution on a Volume-by-Volume basis |
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A new option has been added to CFD-ACE+ in version 2007.2
that will allow the user to solve turbulence on a zone by zone basis,
i.e. some zones can be specified as laminar while others are specified
as turbulent. This is available
for use with all turbulence models in CFD-ACE+.
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Semi-Structured Domain Stitching in CFD-GEOM |
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A feature that allows users
to stitch together a Semi-Structured domain is available in CFD-GEOM. This feature gives the user flexibility
of stitching two end faces with different topologies, i.e. a geometry
that cannot be extruded.
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