Feature 3
Napa manages with Lloyd’s Register
The development of a new NAPA application, based upon the Manager
platform, was achieved in collaboration with Lloyd’s Register.
N
APA 2007.1 was recently released by A screenshot of NAPA Steel, one of the
Napa, with new features including software packages that has recently been
the ability to enable the designer to updated by Napa.
easily investigate, at the design stage, whether a
ship complies with the regulations concerning
stability and damage stability. Lloyd’s Register for ship structural design, comprise tools for
aided the development of this software, cost accounting, calculation of painting surface
consulting on the interpretations of the stability areas and functions for classification designs,
rules and applying its own approval process as well as considerable improvements to the
to the application, which is also intended to user interface. The basic functionality is also
streamline the ship approval process. reckoned to be improved by the development
The Manager development platform offers of a new geometry editor that offers a visual
claimed effective tools for the modelling of and revisions include applications for planning and straightforward way of modelling the ship’s
processes in the planning of different ship types, of ship painting, automation of planning the geometry.
and is said to be easy to use, with an intuitive isolation of passenger vessels, reviews of offshore The NAPA software packages are type
interface. Other applications based upon the structures, and for simulation of ship flooding. approved by Det Norske Veritas, Germanischer
Manager platform have also been updated, The new features of NAPA Steel, a system Lloyd, and Lloyd’s Register. NA
Virtues of HSVA towing tank
Hamburg Ship Model Basin’s (HSVA) CFD development project, Virtual
Towing Tank (VIRTUE), funded by the EU, has been augmented with the
creation of VIRTUE Integration Platform (VIP).
V
IRTUE Integration Platform was
recently developed as a major part of
the entire concept of the virtual basin
for HSVA, with the software being aimed at a
flexible and extendible platform architecture.
The platform is said to facilitate the interplay
of numerous individual CFD tools, which
formerly existed in separation, requiring a
large effort to interface.
Introducing dedicated data translation
modules and wrappers, the VIP now enables Scott Gatchell, HSVA, presenting the VIP. A CFD diagram of propeller pressure
easy generation of complex process chains, distribution (suction side).
combining several interacting analysis
tools. During a recent demonstration of the the numerical towing tank focuses on the The use of a completely unstructured mesh
platform, presented by HSVA’s Scott Gatchell, a prediction of propeller flows. A new RANSE allows for relatively simple grid generation,
propeller analysis and optimisation application code, FreSCo, a joint development with facilitating fast model generation and shortened
was displayed, making use of a combination TUHH and MARIN, has been adopted for analysis times. In a recent open workshop
of RANSE methods, which are used for the propeller predictions inside the VIRTUE performed by VIRTUE’s propeller group, the
prediction of a ship wake, and a dedicated project. Despite its rather short development code is said to have proved highly competitive.
propeller panel method to compute thrust was time, FreSCo is now claimed to show HSVA will soon introduce FreSCo into CFD
also presented. encouraging results for propeller flows and analysis practice, to generate an immediate
Another of HSVA’s main activities in cavitation. exploitation of project results. NA
The Naval Architect January 2008 67
NA Jan -
p67.indd 67 04/01/2008 15:53:50
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