Modeling of Cavitating Flow through Waterjet Propulsors

Abstract EN

A computational-fluid-dynamics-based modeling effort to capture flow through an axial flow waterjet propulsor is presented.

The effort covered the waterjet flow over a wide range of flow coefficients and into cavitation-driven breakdown.

The computations are presented in cavitation at two values of flow coefficient through a series of decreasing operating inlet total pressure.

The computational results are compared to experimental measurements.

Suction-surface and tip-gap cavitation patterns are presented and compared to experimental photographs.

Presented computational solutions are blade-passage steady and periodic.

The computational results apply a powering iteration methodology to facilitate coupling of rotor, stator, and inflow and outflow ducting.