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ORCA has been developing CFD software called
Numerical Wind Tunnel, capable of simulating flows around multiple, complex, moving
geometries. The code has many innovative features:
ØImmersed
Boundary Method for BC specification
ØSolution visualization with
OpenDX (IBM)
ØAdaptive anisotropic Cartesian
grid
ØAutomatic grid
refinement/coarsening
ØMulti Scale Large Eddy
Simulation – LES Turbulence Model
Ø Fluid-structure interaction
forces
ØGeometric definition by
importing .STL files
ØSolution visualization with
OpenDX
The following is a list of example flows that have
been solved using the NWT:
Ø
Vortex induced vibration in petroleum exploration cylinders (2D and
3D), with cylinder motion induced by fluid-structure
interaction.
Ø Rotating 2D rectangle in
stationary fluid
Ø Flow around a moving
airfoil
ØPressure distribution around a
ship as shown in the above video
HARDWARE
ORCA - (DELL) cluster
ORCA provides a wide range of simulation services, using both in
house and commercial software. The software is used to simulate
hydrodynamics, structural and fluid-structure interactions for ships
and marine structures. The calculations are carried out on our own
PC cluster with the following characteristics:
16 x
3.6GHz/2MB Cache, Xeon 800MHz Front Side Bus
2 GB DDR2
400MHz (4X512MB) DualRanked DIMMs, BCC
APC SMART-UPS XL
MODULAR-3000VA 208V RM TOWER
PowerConnect 2724 Web-managed
Switch, 24 Port GE, 2 GE/SFP Combo Ports
The system uses the Linux Rocks Version 4.1 this distribution is
based on Red Hat 4.1, 64 bit with MPICH 2.6 for parallelization
Click here for a more in-depth review of the
Numerical Wind Tunnel.
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