Propulsion performance prediction and resistance analysis
CFD simulations is an important part of the hydrodynamic capabilities at Kongsberg supporting both internal and external customers.
In-house High-Performance Computer Clusters (HPCC’s) allows simulations of propulsors or complete ships to be conducted in a short time frame. Simulations are performed using methods in both model- and full-scale built on research and validations. The unique capability of Kongsberg to combine in-house experimental testing and numerical simulation builds confidence in CFD models used for design and optimisation.
CFD simulations for analysis and optimisations are today part of the design tools available to designers at Kongsberg. These CFD simulations are available for customers, as a hydrodynamic service, to support design and optimisation. CFD simulations in an iterative design process can help to minimize hull resistance and improve the total system performance of the vessel. The ship wake are optimised to enable best possible propeller design and propulsive performance. CFD simulation of the complete hull and propulsion system is important to understand and optimise interaction effects between propulsor and hull. The balance between propulsive efficiency and cavitation nuisance, pressure pulse and noise levels are studied.
Calculation of the Nominal wake and bare hull resistance.
Self-propulsion simulation to predict power consumption and propeller performance in behind condition.
CFD simulations are also available to create a digital twin representation of a vessel. One example is Dynamical Positioning models that includes wind, wave and current loads.
Performance prediction and propeller optimization
- CFD prediction of hull resistance and self propulsion simulations
- Power speed prognoses – with actual propeller characteristics from in house model tests and CFD simulations
- Optimizing propulsion arrangement efficiency for given hull resistance and operational profile
- Thrust prediction for dynamic positioning, towing operation and bollard pull