Because innovation
is a crucial need for all company, to improve efficiency as to open new
perspectives prospects, Marc Ronet Architecture
Navale brings to you his technical experience for your projects.
Numerical
Simulation
To be able to quikly test new ideas in term of hull
and fluids dynamics on computer, this is the new challenge for the
naval architect. Thanks to the use of numerical tools, architect's
intuition can be confirmed, and benefits are quantitatively determined.
That why Marc Ronet Architecture Naval office
has recently implement a
CFD
computation code. This powerful tools is able to solve complex
3D problems such as flow interface like sea and air. This
virtual tank test allows to study
different hull's options with accuracy.
This work has been completed on a particular kind of
kayak called baidarka (see
the baidarka's page). Comparaison between this aleutian kayak and a
more conventional greenland kayak of the same lenght and same
displacement highlights the remarkable performance of this hull. The
advantage brings by the bifid bow have confimred Aleut people's
intuition. (
see the page
dedicated to the Baidarka replica's construction )
Virtual tank test
Comparaison between a Baidarka
(left) and a sea kayak (right) at a speed of 4.8 m/s
Bifid Bow
:
Increase the average
speed for a same propulsive power
This
innovative concept aims to improve the seakeeping comportment of a
vessel in rough seas, bringing a wave piercing effect to the hull. The
bifid bow reduces vertical accelerations of the hull coming through a
wave: the pitch motion is softer and the global speed is less affected
with the wave.
Marc Ronet Architecture Naval has develloped this
2500 TEU container vessel project who adopte this innovation:
• The immerged part of the bow acts as a bulbous bow and presents a maximal
waterline lenght.
• The horizontal gap brings a wave piercing effect, allowing a
softer hull's motion in rough seas.
• The important volume of the upper part of the bow
avoid the too important vertical motion.
• The bifid bow goes along with a main section
placed backwards from amidships to sharpen the fore warterline.