The aerodynamic flow over a ship superstructure influences the performance of a vessel in many ways. Not only does the aerodynamic resistance have an impact on the efficiency of ships, the aerodynamic flow over a ship at speed also has a large impact on the comfort, e.g. smoke dispersion from the funnel(s) or creates local “hot spots” on deck, particularly of passenger vessels.
HSVA performs aerodynamic studies of ship and offshore structures in collaboration with other partners, using e.g. the new wind tunnel at Technical University Hamburg-Harburg providing the following services:
- Wind and current loads
- Analysis of funnel performance - smoke dispersion
- Wind Comfort Studies
- Helicopter Operations Studies
In addition to wind tunnel experiments, numerical studies can be performed using the in-house CFD code FreSCo+. The numerical simulation allows accurate flow field predictions and visualisations at full scale Reynolds Numbers without inadequate scaling procedures. The following figures indicate results obtained for a contemporary passenger vessel.
Below the modification of the funnel height of the historical Trans-Atlantic liner Bremen is shown in a CFD simulation indicating the smoke plume on the left and streamlines on the right.