Pressure Contours Calculated |
With
continuing growth and development in numerical modeling capacity,
Oceanic can offer clients a much broader range of application.
Leading-edge numerical codes complement physical model testing
capabilities by cost-effectively offering traditional and non-traditional
application.
Seakeeping
MOTSIM is Oceanic's non-linear, time-domain seakeeping simulation
program. This software package allows simulation of various vessel
hullforms from traditional monohulls to more complex semi-submersibles.
Developed in conjunction with researchers at IOT and MUN, this
code is applicable to a wide range of vessel types and environmental
conditions.
MOTSIM
includes autopilot and dynamic positioning (DP) control algorithms
that can be used to evaluate the thruster forces required to maintain
station in a given seaway. Models for roll stabilization systems,
including bilge keels, active and passive fins and anti-roll tanks,
allow Oceanic to help clients determine the optimal system for
any application.
Download
MOTSIM Specification Sheet
Download
Waterway Simulation Group Brochure
Maneuvering
Oceanic's time-domain maneuvering simulation program computes
the behavior of a vessel in three/four degrees of freedom. This
code runs in real time or faster than real-time modes on a desktop
PC in programmed or interactive modes. The programmed mode allows
simulation of standard maneuvers such as turning circles, zig-zags,
spirals and crash stops. The interactive mode allows simulation
of more complex maneuvers such as harbor navigation and
stationkeeping.
The
maneuvering code can make use of experimentally determined wake
and propulsor data and hydrodynamic derivatives, to improve the
accuracy of the results. If this data is not available, values
are estimated based on parametric representations of the vessel
geometry and systems.
Propulsion
PROPELLA is a three-dimensional, unsteady panel method code
for the evaluation of propeller thrust and torque. This software
package has the ability to model ducts and rudders in the vicinity
of the propeller. PROPELLA has been validated against published
data for a range of propeller types including B-series and Kaplan
as well as highly skewed models.
PROPELLA
enables the user to visualize the pressure distribution over the
propeller blade and hub, and to examine loads on a per blade basis.
This capability is useful in examining cyclic loading due to wake
characteristics or flow blockages.
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