Numerical calculation of viscous hydrodynamics of fore and stern thrusters considering hull disturbance
In this paper,the viscous flow CFD method based on Reynolds-averaged N-S equations(RANS)and the multiple reference frame model(MRF)are used to numerically calculate the viscous flow field and hydrodynamic forces of the fore and stern thrusters of an LNG carrying and bunkering vessel.The influence of ship speed on the thrust performance of the thrusters at low speeds is studied under various conditions.Through comparative analysis,it is concluded that there are great differences between the hydrodynamical performances of fore and stern thrusters and their sensitivity to ship speed.The efficiency of the independent stern thruster is much higher than that of the independent fore thruster.
fore and stern thrustershydrodynamic forceviscous flow
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