Premium
Numerical calculation of the viscous flow around a propeller shaft configuration
Author(s) -
Oh Keonje,
Kang Shinhyoung
Publication year - 1995
Publication title -
international journal for numerical methods in fluids
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 112
eISSN - 1097-0363
pISSN - 0271-2091
DOI - 10.1002/fld.1650210102
Subject(s) - propeller , mechanics , turbulence , laminar flow , boundary layer , wake , vortex , advance ratio , flow (mathematics) , reynolds number , physics , flow separation , thrust , laminar sublayer , classical mechanics , geology , blade pitch , rotor (electric) , thermodynamics , oceanography , quantum mechanics
A viscous flow simulation method is developed to calculate the flow around a marine propeller configuration and applications to propeller flow under uniform flow conditions are presented. The continuity and Reynolds‐averaged Navier‐Stokes equations are solved in a rotating co‐ordinate system using the finite volume method. The turbulent Reynolds stresses are modelled by the modified k ‐ϵ turbulence model to account for swirling flows. The general characteristics of propeller flow can be reasonably predicted in the slipstream of the propeller wake and the results of the circumferentially averaged velocity profiles show good agreement with experimental data. The tip vortex can be captured near the tip of the blade, but the strength of the vortex is weakly predicted in comparison with the measured one. The predictions of the boundary layer on the blade show reasonable agreement with measurements in the turbulent boundary layer region. However, the laminar and transitional boundary layers cannot be represented, because the flow is assumed to be turbulent in the calculation. The thrust and torque coefficients are adequately estimated in comparison with measured data for a wide range of advance coefficients.