KVLCC2

Numerical Tank EU Project: Added Resistance to Waves 

Naval architects need to estimate ship performance during the design phase. The choice of CFD simulations to evaluate ship performance is less time consuming and a cheaper alternative than a model test.
   
Bureau Veritas Solutions Marine & Offshore validated several methodologies based on CFD to evaluate added resistance in waves. Computations were performed with the solver ISIS-CFD on the KVLCC2 hull form and compared with towing tank experiments in terms of added resistance and motions.

The CFD simulations were performed in regular head waves that were free to heave and pitch. All physical parameters (fluids properties, waves' definition, etc.) were set to be the same as those for towing tank experiments. The meshes were adapted for wave propagation in order to have good wave definition (height & period). Computations were performed for a constant wave height and for several wave periods, in order to build the Quadratic Transfer Function (QTF).

The results showed that the quadratic transfer function and the pitch & heave RAO fit well between experiments and CFD simulations. The different parts of the curves were perfectly defined.

First wave period

First wave period

Second wave period

Second wave period