Pressure Jump Approach for Modeling Waterjet/Hull Interaction

• The aim of the current paper is to introduce a method, which is not dependent on the pressure distribution on the waterjet intake streamtube. First the conventional momentum flux method is going to be discussed and then another approach, which is independent of the intake streamtube properties, is going to be introduced. This method, which here in this paper is called pressure jump approach, is adapted to a potential flow solver in SHIPFLOW commercial code. The code comes with a linear/none-linear free surface model and is capable of obtaining equilibrium sinkage and trim angle of the hull iteratively. A sink disk along with a body force at its center is applied for modelling the pump system effect.

Ämnesord

TEKNIK OCH TEKNOLOGIER  -- Maskinteknik -- Strömningsmekanik och akustik (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Mechanical Engineering -- Fluid Mechanics and Acoustics (hsv//eng)

Nyckelord

Pressure Jump

Potential Flow

Propulsion

Momenthum Theory

Interaction

Hull

Waterjet

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