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Flow Solvers Distributed with Cart3D
What flow Solvers are distributed with Cart3D?
What version of Tiger is being distributed?
Tell me a little about FlowCart?
What flow Solvers are distributed with Cart3D?
Cart3D
is was developed with 2 flow solvers, Tiger
and flowCart. Tiger is
familiar
to most longtime Cart3D users
and was our baseline Euler solver up till Cart3D v1.2, documentation on it is
available in the v.1.2 webdocs
here.
Starting with Cart3D v1.3 however,
we're dropping it from the distribution, and it will be available only
through special request
(e-mail me, i'll be happy to
send any current user a tarball). Its still and excellent code,
but after 4 years of very active development, flowCart is now faster,
more accurate, and more robust by virtually any measure. Moreover its
more closely integrated into the rest of the package. flowCart
is a domain-decomposition,
multilevel solver and is aimed at distributed, parallel computing
platforms.
If you are a current Tiger user, we're encouraging you to start
switching to flowCart,
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What version of Tiger is being distributed?
Tiger14
was the last distributed version. It was included with Cart3D v1.2, but is no longer
included in the distribution starting with Cart3D v1.3. If you want a copy
contact me.
Tiger is a
uni-processor code that runs well on scalar and vector machines. It
uses central-difference,
finite-volume
solver with blended second and fourth order dissipation.
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Tell me a little about FlowCart?
flowCart
is the current solver being released with Cart3D. It is a scalable,
multilevel, linearly-exact upwind solver and uses
domain-decomposition to achieve very
good scalability. It is among the most scalable, accurate and
robust codes in the industry. On most modern desktop machines it can
converge about 1 million cells-per-hour-per processor. flowCart
is very tightly integrated into Cart3D and all of
our automation tools are built around it. Since it is a
multilevel
code, it converges substantially faster than Tiger and
includes
our latest work on low-dissipation approaches to solid wall boundaries,
mesh interfaces and limiters. Both the parallelization and multigrid
are completely transparent to
the
user and are turned on by simple command line arguments to encourage
their
use.
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last update June 2004 M. Aftosmis
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