Numerical and experimental reasearch on hydrodynamic performance of podded propulsor under oblique sailing condition
In order to investigate the hydrodynamic performance of the podded propulsor under oblique sailing condi-tion,taking a luxury cruise ship podded propulsor as the research object,hydrodynamic performance of podded propulsor at different declination angles and advance speed coefficients were numerically solved by software STAR-CCM+adopts the RANS method with combined standard κ-ε turbulence model.Meanwhile,experimental investigations for hydrodynamic performance of podded propulsor at oblique sailing condition were conducted by towed tank and pod dynamical instrument.The experimental and numerical results were compared and analyzed,and the interaction between propeller and pod was ana-lyze in detail,which results that,the hydrodynamic performance of podded propulsor can be accurately predicted by numer-ical simulation.The thrust and torque coefficient of the propeller are symmetric at the point of direct navigation,the value in-creases with the increase of deflection angle.The value of thrust coefficient of pod unit decreases with the increase of deflec-tion angle.The lateral force of pod increases with the increase of deflection angle.The propeller unit flow field pressure and velocity reach the maximum value at the blade tip,the left side of the pod bears more surface pressure amplitude than the right side.
万方数据
维普
