Newsroom
Flow Science Releases
FLOW-3D V8.2 for CFD
SANTA FE, New Mexico, September 17, 2003. Flow
Science, Inc. announces the availability of a new upgrade release of its FLOW-3D computational
fluid dynamics software. Version 8.2 of FLOW-3D offers
users several new and useful physical models and significant improvements to
two key features of the solver: the VOF method for tracking fluid interfaces
and the multi-block grid coupling. In addition, FLOW-3D will
now offer its users interactive, on-screen geometry and mesh creation capability.
What follows is a brief description of the key new features in Version 8.2:
New VOF advection model -- TruVOF. A new semi-Lagrangian
VOF advection method has been implemented. The new VOF advection model will enhance
users’ ability
to track fluid interfaces in complex 3D flows.
Multi-block coupling model. Stability,
accuracy and efficiency of pressure-velocity coupling between mesh blocks has
been greatly improved through the use of the Chimera multi-block method. The
new method further widens the range of problems that can be tackled with FLOW-3D,
from large scale flows in civil engineering to casting to micro-electro-mechanical
systems (MEMS).
Graphical User Interface. FLOW-3D now
offers users the ability to interactively create geometry and build meshes using
FlowVu.
New
Elastic-plastic stress model. A new elastic-plastic stress model
has been developed for FLOW-3D for modeling materials
having elastic properties. A yield stress may be defined to allow for plastic
flow of these materials.
New Electro-osmosis model. A new electro-osmosis model, using
a GMRES-based solver, has been implemented.
Sand core blowing model. A
new model simulating the sand core blowing process has been implemented.
Two-Fluid model. A phase change has been added to the two-fluid
model in the absence of free surface. Condensation/boiling can be initiated in
situations when initially there is only vapor or fluid present.
Implicit Shallow Water model. An implicit treatment
of pressure forces has been added to the shallow water model. The addition eliminates
the time-step stability limit associated with the explicit setting of the free
surface pressure as a function of fluid depth and gravity.
Individual Blade Effects. A new model for individual blade effects
for fan-type rotating obstacles has been implemented.
Cavitation/Boiling model. Improvements have been made to the
bubble nucleation/growth to avoid unrealistic temperature and pressure fluctuations
in the cavitating bubbles and surrounding fluid cells.
Lost Foam Model. The lost
foam model in FLOW-3D has
enhanced in two respects: (1) changes to the metal/foam heat transfer which will
improve the accuracy and stability of the lost foam model; and (2) added the
ability to model variable density foam patterns.
Solid-fraction-dependent metal/obstacle
heat transfer coefficient. A new input variable is available
to make the heat transfer coefficient a function of the solid fraction for every
obstacle in every interfacial cell.
Two-fluid compressible-incompressible model. Thermal buoyancy
has been added to the incompressible fluid when the two-fluid compressible model
is used. This will be very useful for the two-fluid phase change model employed
in cryogenic fuel tank simulations.
Post-processor improvements. An option has
been added to the post-processor to allow the generation of iso-surfaces that
are suitable for symmetry reflection. Marker particle data can now be extracted
for rendering with iso-surfaces. FlowVu can read and display particle data at
the same time as fluid and obstacle iso-surfaces. The post-processor has also
been made more robust by allowing it to continue data extraction when a requested
variable is not found in the results file. This is especially useful for restart
calculations. And FlowVu has been made significantly more efficient in both speed
and memory use.
Pre-Processor improvements. A new STL reader has
been developed which is more stable and accurate, especially when working with
complex objects. Also, it can now process STL files in 3D cylindrical geometry.
The topographical file reader has been improved to eliminate most problems with
artifacts, defects and other inaccuracies.
Flow Science has commenced shipment of the new release to customers under
maintenance contracts.
Flow Science, Inc. is a privately held software company specializing in high
fidelity fluid dynamics modeling software for industrial and scientific applications
worldwide. Flow Science has Associates for FLOW-3D sales
and support in Japan, Germany, Korea, Finland, Norway, Russia, Hong Kong, Taiwan,
Spain, Italy, Canada and India.
For information, contact Flow Science, Inc. at:
Flow Science
683 Harkle Road, Suite A
Santa Fe, New Mexico, USA
Telephone: (505) 982-0088
Fax: (505) 982-5551
E-mail: info@flow3d.com
Website: www.flow3d.com.
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