Computational Fluid Dynamics​

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Fluid Dynamics (CFD)

Modelling And Simulations

#CFD #Hull Design #CFD Resistance

Although model testing will continue to be a very important method in determining  the resistance and power requirements in the future, CFD has recently been recognized as a useful tool at principal and final design stages and has become  a powerful methodology for interpreting a ship’s hydrodynamic performance with the development of high-performance computing.

Our engineers from ShipProjects – bring together researchers from different scientific disciplines and helps solve gas and liquid flow problems by using advanced numerical methods.

  • Create simulation model from a 2D/3D drawing;
  • Perform parallel computing in the HPC cluster (supercomputer);
  •  Study and interpret the results.

CFD is economical in time and cost in comparison with the experimental methods, and allows the designer to estimate and predict some characteristics of the flow pattern around the ship hull form which are not possible to be obtained by model tests, providing complete insights into the flow fields around a vessel. 

Our team works with CFD simulations specifically to support EEXI compliance calculations by improving your ship’s EEXI value and to determine the impact of ESD on EEXI in addition to EEXI calculations and EEXI technical file preparation.

  • Optimisation of hull forms and appendages 
  • Aerodynamics of ship superstructure, exhaust gases
  • Internal aerodynamics (ventilation, air conditioning)
  • Seakeeping, ship operability, hydrodynamic loads, ship stabilization
  • Manoeuvring simulations and assessment
  • Support to propeller design, propeller optimization
  • Prediction of ship specific speed-power curves for ESD (Energy Saving Devices) modification proposals.

Optimisation of hull forms and appendages

Computational Fluid Dynamics of ship hull

Today’s computational tools offer a great possibility on the improvement of the ships hull design. The methods used today are since 2000 the RANS (Reynolds Averaged Navier Stokes) methods. With the increasing computational power, not only the hardware, but also the developement of new very robust and cunning software codes it becomes feasible and attractive to simulate the performance of the hulls.

Hull Design

The design of a hull for a ship can be done in specific CAD environments where the curvatures and dimensions can be controlled. The design can be tested in the CFD software for performance at different hull speeds. It is important to reduce the resistance of the hull.

CFD Resistance

The hull once designed can be tested in the CFD software for performance. In the picture above an impression is given of the flow around a customers hull. The resistance at certains boat speed has been investigated.

Janis Nagla

janis.nagla@shipprojects.net

+371 26 370 249

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