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--
Computational Fluid Dynamics(CFD)
can be defined as the numerical method
to simulate fluid motion using computers.
It solves the motion of air in the
room, around automobiles and past
aircraft. It also deals with the blood
pattern in the heart, fuel in the
engine and tide on the shore.
-- The
Wright brothers, the inventors of
the first heavier-than-air aircraft,
used an experimental method to make
their aircraft. The design process
was a series of trial-and-error. They
spent a great deal of time and money
to make a prototype aircraft, and
to test and modify it. If they had
had a CFD tool, they could have simulated
the fluid motion around their prototype
without the need for expensive experimentation.
In modern industry and academia, CFD
becomes an essential tool to study
fluid dynamics and to develop automobiles
or aircraft.
-- In
the KISTI supercomputing center, the
CFD research team is focused on two
topics, the CFD algorithm itself and
how to exploit this resource in CFD.
The CFD is inherently dependent on
computing power. To simulate real
problem, e.g. airflow around F-18
fighter, a lot of computing power
and time are required. The cluster
and Grid computing research are in
progress to extend its computing power
to far more than TeraFlops. Parallel
and Grid-based CFD algorithm are studied
to maximize the efficiency of implemented
CFD code on these modern computing
environments. The Chimera method,
a.k.a. overlapped grid, is used to
treat complex geometry and moving
body problems. The aerodynamic design
optimization method, in conjunction
with the automated numerical optimization
algorithm, is developed to provide
an innovative design tool to engineers.
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