Dynamics of transitional air layers
“AQUA” – Water Quality in Maritime Hydrodynamics
Air bubbles in water attenuate underwater sound and reduce the friction under a ship, as a result of which less fuel is needed. Although the behaviour of air bubbles in freshwater is known reasonably well, bubbles in saline seawater behave very differently. In this programme, the researchers compare air bubbles in different types of water, varying from freshwater to natural seawater, to gain a better understanding of how bubbles can be used to manage friction, sound propagation and cavitation. The ultimate aim is to be able to predict how the composition of water influences the air bubbles.
Within this programme, we focus on the dynamics of transitional air layers, a method to reduce friction on ships. These experiments are performed in the unique Multiphase Flow Tunnel, a tunnel that can operate with salt water, at elevated and reduced pressures.
Funding: NWO-TTW Perspectief
Chair:
Multiphase Systems
Involved People:
Prof. dr. ir. C. Poelma
Dr. A. (Angeliki) Laskari
M. (Lina) Nikolaidou
Prof.dr.ir. T.J.C. van Terwisga (M&TT,ME)
Facilities used: