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CFD for Naval Architects

Over the past ten years our software SHIPFLOW has developed into the world standard for ship hydrodynamics CFD. Developed by naval architects, physicists and numerical analysts, SHIPFLOW is optimized for ship hydrodynamics design. Specialization means efficiency and user-friendliness. No general pupose code can compete with SHIPFLOW in hull design: grids are automatically generated, resistance and propulsion data are presented using conventions from naval architecture, and the solvers are adapted for hull geometries.

Submarine with pressure contours and waves.

Lead times are being shortened more and more in ship design, particularly at the initial phase. Many alternatives have to be evaluated in a short period of time. Time can be saved by using the efficient potential flow panel methods, which predict important quantities like waves and wave resistance rapidly, yet with enough accuracy for hull ranking.

Pressure contours on a ship with pods.

Viscous effects are also important. The viscous resistance is often the largest component and the inflow to the propeller is critical. Therefore a good viscous solver such as a Reynolds-Averaged Navier-Stokes solver is also necessary.

Last Updated ( Wednesday, 10 February 2010 )

SHIPFLOW 4.3

SHIPFLOW 4.3 is now available.

The most important new features are:

Remote computations

A SHIPFLOW computation can now be initiated on a client that can be either a Windows or a Linux platform. The computation is then executed on a host that must be a Linux server.

Open interface for external propeller code

The EXTPROPELLER command offers an open interface to external propeller programs. The command allows for setting up the environment to run the external programs and manage the files required by the programs. Computations are carried out in a subdirectory id_DIR.

Automatic POW simulation

It is now possible to run an open water simulation directly from a single command file. The keyword POW in the HULL command will automatically create computations for a sequence of advance ratios.

Revised twin skeg option

The twin skeg capability has been revised with respect to grid generation and offset file requirements. The grid orthogonality as well as detection of cell face boundary conditions is improved. The inner group in the offset file should now be ordered in the same way as the outer and normal groups. A new example for a twin skeg hull is available in the examples directory. examples directory is twinskeg. The twin skeg option can only be used with the zonal approach in this release.

CGNS file used for restart

XCHAP use the CGNS file for restart. The CGNS file is updated every tenth iteration. Intermediate results can be visualised.

Last Updated ( Wednesday, 10 February 2010 )

Newsflash

A SHIPFLOW Training Course will be held on the 24 - 28 of May 2010 in Gothenburg Sweden.

Mambo is Free Software released under the GNU/GPL License.