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Office of Naval Research, USA. Dejan Matic, Bill Clark, Ganesh Venkatesan - CD-adapco. The numerical simulation of submarine maneuvering is a challenging problem that has only recently been addressed by technological advances in commercial Computational Fluid Dynamics (CFD) software. In this ar ticle, we demonstrate how CD-adapco’s simulation technology can be applied to accurately predict how a submarine’s motion is driven by hydrodynamic forces, and compare numerical results with experimental data. Marine Special Report: Read more...
Ould el Moctar - Germanischer Lloyd. Germanischer Lloyd is the market leader in the classification of containerships. Every second containership is built according to GL Rules. Devoted to promoting innovation, sustainability and environmental protection, Germanischer Lloyd also covers all other ship types such as tanker, bulker, multi purpose vessels, high speed ferries and cruise ships. The current new building order-book contains more than 1,400 vessels with 28 Mio GT. Marine Special Report: Read more...
Ould el Moctar, Germanischer Lloyd. CD-adapco, a global enterprise offering computationally-based engineering solutions, and the classification society Germanischer Lloyd (GL) have joined forces. The two companies signed a cooperation agreement whereby they will closely work together in the sector of Computational Fluid Dynamics (CFD) for marine applications. The future collaboration will comprise of mutual publications, development, validation as well as workshops. Marine Special Report: Read more...
Hans Jørgen Mørch - CFD Marin and Agder University, Norway. Sven Enger, Milovan Perić and Eberhard Schreck - CD-adapco. Lifeboats are an impor tant component of safety measures for the passengers and crew of floating vessels and offshore platforms. They need to be designed so that people on board can be evacuated safely. This requires that: the lifeboat is not damaged during water entry; the lifeboat moves sufficiently far away from the launching point before its own propulsion system is started; and the accelerations experienced by occupants do not exceed a cer tain level over a certain...
Stephen Ferguson - CD-adapco. In June 2008 we released STAR-CCM+ V3.04, followed by V3.06 in October. Central to both releases was the introduction of a new capability for “Dynamic Fluid-Body Interaction”. Unlike traditional CFD software, which is typically limited to simulating the motion of a body along some prescribed path, the STAR-CCM+ DFBI model enables engineers to easily simulate the fluid-induced movement of a body, for everything from a tanker listing under heavy seas to an aerodynamic body tumbling in free fall. Marine Special Report: Read more...
Recently cited by Forbes magazine as “the coolest business jet ever”, the Falcon 7X is the latest in a long line of high-class executive jets from Dassault Aviation. As well as being cool, the Falcon 7X is also revolutionary - being the first civil aircraft ever to be designed using virtual rather than physical prototypes. Designed entirely using Dassault Systèmes CATIA Product Lifecycle Management (PLM) tools, every component on the Falcon 7X was subjected to rigorous CAE analyses. Aerospace Special Report #1: Read more...
As engineers routinely applying CFD to a wide range of turbomachinery and aerospace applications, we often face technical judgments as to the applicability of certain numerical approaches or physical models used in a simulation. One such judgment for rotating machinery relates to the choice of either applying a time accurate transient moving mesh approach or a simplified steady-state multiple rotating frames (MRF) approach. This modeling decision can be critical especially when simulating the flow through rotating systems which contain a low blade count. Aerospace Special Report #1: Read more...
D.Funda Kurtulus 1,2, Alain Farcy 1, Laurent David, Nafiz Alemdaroglu Ecole National Superieur de Mechanique et d’Aérotechnique, LEA, Poitiers, France Middle East Technical University, Ankara Turkey The aim of the flapping airfoil analysis is to understand the aerodynamic phenomena and the vortex topology of this highly unsteady motion. Instead of the use of real insect/bird wing geometries and motions, which are highly complex and difficult to imitate by a exact modeling, a simplified model is used to understand the unsteady aerodynamics and vortex formation during the different phases of...
The challenge of designing a next generation compact Vertical Take Off and Landing (VTOL) craft has been addressed with the combination of a novel radial fan technology and the use of unique lifting and control surfaces. Aerospace Special Report #1: Read more...
For over a century mankind has devoted substantial resources toward achieving and improving flight. With the yearly threat of major wildfires and the ongoing conflicts in the Middle East as its primary focus, Propulsive Wing, LLC is developing unmanned aerial vehicle solutions for both domestic fire fighting support and military applications, covering a wide range of missions. Aerospace Special Report #1: Read more...

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