HULL FORM OPTIMIZATION

FLOWTECH has performed a large number of pilot projects over the years that involved optimization of hull forms. With the Naval Architecture background, the knowledge of hydrodynamics and CFD methods accumulated over the years our staff can perform the tasks efficiently and with high degree of confidence.

The optimization include typically wave making and viscous resistance minimization as well as maximization of the propulsive efficiency. Our experience shows that for many ships the best way is to consider the delivered power as the main objective, see On The Importance Of The Objective Function And Scale Effects In Hull Design Optimization , M. Orych, L. Broberg. 2018.

wave pattern comparison of an optimized hull to the original hull

Hull transformations for aft body optimization

For more information contact us at: info@flowtech.se

ENERGY SAVING DEVICES OPTIMIZATION

FLOWTECH has performed a large number of pilot projects over the years that involved Energy Saving Devices (ESD). With the Naval Architecture background, the knowledge of hydrodynamics and CFD methods accumulated over the years our staff can perform the tasks efficiently and with high degree of confidence.

The ESDs require a very detailed analysis and accurate tools. With SHIPFLOW the simulations are performed in self-propelled conditions at model or full scale, see Energy Saving Device Evaluation in Full Scale Using Computational Fluid Dynamics, Broberg, L., Orych, M.. 2013. and An Efficient Numerical Technique To Simulate The Propeller Hull Interaction, Broberg, L., Orych, M.. 2012.

Dynamic pressure on rudder and stator blades

Total wake behind an energy saving device

For more information contact us at: info@flowtech.se

RESISTANCE AND PROPULSION PREDICTIONS

FLOWTECH routinely performs resistance and propulsion simulations with SHIPFLOW. The speed-resistance and speed-power curves are one of the most crucial data for the ship designers. We continuously work on validation of our code to asses the accuracy of the predictions. By incorporating SHIPFLOW MOTIONS it is also possible to perform self propulsion with added wave resistance to obtain "weather factor" necessary for EEDI.

For more information contact us at: info@flowtech.se