© Vienna Model Basin Ltd 2018
Services
Consulting
Due to our long lasting expertise in the fields of
hydrostatics and hydrodynamics for almost 100
years Vienna Model Basin Ltd provides advice
in the optimisation of the design, performance
and safety of any kind of vessel. For a
successful achievement of objectives various
tools are used depending on the client’s
requirements.
Numerical Simulation
Numerical methods for the computation of fluid
flow have reached a stage where they can be
successfully applied to a wide range of fluid
flow problems arising in the marine industry and
related fields. CFD methods provide an
excellent means to reduce time consumption at
an early design stage and thus shorten overall
time spent on a new design. Furthermore, CFD
methods for the first time ever offer the
possibility to include hydrodynamic analysis in a
complex computer aided design environment
comprising different kinds of CAX technologies.
Powering and Performance
Ship performance prediction is one of the
standard procedures at Vienna Model Basin
Ltd. High measuring accuracy and
reproducibility of the measured data and many
years of experience in the fields of
hydrodynamic tests are the basic of high
degree accuracy by the correlation of test
results to full-scale measurements.
Besides conventional routine tests VMB carries
out a lot of additional investigations, like
optimization of hull form, determination of
manoeuvring and seakeeping characteristics
including slamming damage, and arrangements
of energy saving devices, tunnels and nozzles.
Towing tests with fishing gear, life-saving
appliances and sport boats are also a part of
VMB´s offer.
Seakeeping
Scale model tests in both regular and irregular
waves are carried out in Vienna Model Basin's
towing tank (head and following sea). In the
towing tank seakeeping tests (using free
running and captured models) can be carried
out in any wave direction. In addition to studies
of ship motions, accelerations, and wave added
resistance, investigations of slamming
pressure, the presence of water on deck, and
broaching can be performed.
Predictions of full-scale ship motions can be
based on scale model test results only, or
carried out in combination with simulations.
Studies of dynamically controlled motion
damping appendages can be carried out using
computer simulations or model tests.
Manoeuvring
Vienna Model Basin Ltd performs all kinds of
manoeuvring studies including those required
for checking compliance with IMO's regulations.
Examples of such tests are turning, zigzag,
crash stop, and reversed spiral tests. They can
be carried out with a free sailing model in the
towing tank, in deep as well as shallow water.
Vienna Model Basin Ltd can give advice and
test the effect of changing the rudder design,
rudder type, and hull form in order to improve
manoeuvring performance and course stability.
This can be done for any kind of vessel
including the water-jet and pod propelled types.
Ship Stability
Stability against capsizing in heavy seas is one
of the most fundamental requirements
considered by naval architects when designing
a ship. The purpose of studying capsizing is to
establish an understanding of ship behaviour in
extreme seas and to relate this to the geometric
and operational characteristics of the ship to
achieve cost effective and safe operation. In an
industry with progressively diminishing returns
and an ever increasing emphasis on safety this
objective is becoming ever more important. As
a consequence, the research effort in this field
over the last 15 years has expanded
considerably, as indicated by the plethora of
publications available in the literature and the
large number of specialist international
conferences, symposia and workshops which
have been held.
Therefore Vienna Model Basin Ltd carries out
stability experiments of intact and damaged
ships for research, validation of numerical
codes and administrative authorities.
SCHIFFBAUTECHNISCHE VERSUCHSANSTALT IN WIEN GMBH
VIENNA MODEL BASIN LTD
Wind
The wind tunnel is used for different kind of
aerodynamic achievements which deal with the
behaviour of ships above the waterline. In most
cases this also affects the ship's hydrostatic
and hydrodynamic characteristics. Therefore
the detailed superstructure of ships is built in
model scale.
Cavitation
The cavitation phenomena are the vaporization
of the water due to a decrease of the local
pressure. Cavitation contributes to noise,
energy losses, destruction of surfaces
(erosion), unsteady flows and vibrations - which
adversely affect the performance of ships,
underwater vehicles, hydraulic pumps and
turbines. Our services span from performing
detailed investigations for ship yards, ships
owners and propeller manufacturers, answering
questions which need a high content of
research and development work. Our activities
cover a wide range of services related to
marine propulsors. Most important is the role of
the propulsor - hull-appendages interaction.
The activities of the department include
propulsor design and analysis, cavitation
predictions and its effects on the full scale ship
behaviour in terms of noise and vibrations,
extensive model testing and long term research
work.
Sea Trial
Stability against capsizing in heavy seas is one
of the most fundamental requirements
considered by naval architects when designing
a ship. The purpose of studying capsizing is to
establish an understanding of ship behaviour in
extreme seas and to relate this to the geometric
and operational characteristics of the ship to
achieve cost effective and safe operation. In an
industry with progressively diminishing returns
and an ever increasing emphasis on safety this
objective is becoming ever more important. As
a consequence, the research effort in this field
over the last 15 years has expanded
considerably, as indicated by the plethora of
publications available in the literature and the
large number of specialist international
conferences, symposia and workshops which
have been held.
Therefore Vienna Model Basin Ltd carries out
stability experiments of intact and damaged
ships for research, validation of numerical
codes and administrative authorities.