Horizontal axis tidal current turbines produce more power when the turbine area is enlarged.
On the other hand, cavitation tends to occur as blade tip peripheral velocity increases.
To obtain high power without cavitation, cavitation limits and turbine design methods are investigated.

Cavitation predictions by Computational Fluid Dynamics (CFD) are used in developing many turbines and pumps.
Highly accurate cavitation prediction methods are required for the development of high performance fluid machinery.
To achieve high accuracy with a simple prediction method, important parameters of cavitation and its modeling are studied.