Computational Fluid Dynamics
in Yacht Design
- All simulations are run at full scale, thus avoiding scaling errors;
- The results are not just an integral value but complete flow fields. This can be in detailed analysed giving better understandings of the physical phenomena;
- Resistance values and its viscous and wave components can be extracted from the different yachts parts and appendages;
- Multiple geometries can be automatically simulated, requiring less time and having less constraints than by adjusting or rebuilding a towing tank model.
Over ten years of CFD analysis in the automotive industry in the aerodynamics and thermal safety department kept our CFD knowledge and quality standards at the highest level.
We are now ready to bring this know-how in the yacht design world, with passion and technical skills.
Handling yachts' motions in CFD
With the overset mesh approach from Star-CCM+ the yacht can easily be set free to move, both in calm water for resistance calculations or in more complex environments with waves for seakeeping studies.
This method consists in having a fixed background region, on which an other, free to move, overlaps exchanging data with it at the interfaces. Have a look at a visualization on the video here, where you can see the overset region translating and rotating for heave and pitch allowing the yacht to reach its dynamic stability for Fn 0.52.
Our choice for CFD: Simcenter Star-CCM+
We don't save on quality. That's why we chose the most validated software package on the market for CFD analysis: Simcenter Star-CCM+.
Our HPC solution
Depending on the complexity of the analysis, CFD simulations require a relatively high amount of computational resources in comparison to other CAE simulations.
To guarantee fast computational time we rely on the flexible HPC cloud service from Rescale, where we can access any amount of cores and set high priority on the queue when required.