Propeller performance optimization method of rim-driven pump jet propulsor
In order to obtain a propeller suitable for the new rim-driven pump jet propulsor,it is necessary to study the performance optimization method on the basis of the traditional pump jet propulsor.The hydrodynamic simulation of the thruster was simulated by CFD numerical simulation method,and the effects of three different propeller aperture ratios and three blade thickness distribution schemes on the open water performance of the thruster were compared.The comparison results show that the small aperture ratio is more favorable to the open water performance of the propeller,and the open water efficiency of the 0.1 aperture ratio propeller is increased by 3.25％compared to the 0.3 aperture ratio propeller.The thick-ness reversal leads to uneven pressure distribution at the high radius of the rim-driven propeller,greatly increasing torque and greatly reducing the efficiency of open water.The smaller the thickness of the rim drive propeller,the lower the torque,and the higher the open water efficiency,among which the torque of the scheme C propeller is reduced by 21.74％compared with scheme A,and the open water efficiency is increased by 12.9％.
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