螺旋桨扰动流场的特性分析(胡健; 马骋; 钱正芳; 杜度; 陈科)

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#WX)L(a.H1Y0螺旋桨扰动流场特性分析

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【作者】胡健; 马骋; 钱正芳; 杜度; 陈科 【作者单位】海军装备研究院舰船所

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【论文摘要】 用面元法计算船舶螺旋桨的尾流场。根据格林公式推导计算螺旋桨表面速度势的积分方程,用面元法作为离散方法求解该方程。在桨叶、桨毂和尾涡面上布置双曲四边形面元, 面元上均匀布置源汇和偶极,根据积分方程,结合库塔条件、运动学边界条件等求解源汇和偶极的强度,用蒙瑞诺公式求解均匀布置源汇和偶极的面元对流场的诱导速度.计算了桨后尾流场中螺旋桨的诱导速度,并将该速度分解为桨毂诱导速度、桨叶诱导和尾涡面诱导三部分,分析螺旋桨诱导速度的构成和脉动特性。

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【英文论文摘要】 The panel method was used to predict the wake flow field of propeller.According to Green's formula,integral equation of the surface velocity potential of propeller could be derived, then solve it by discrete method of the panel method.Some quadrilateral hyperbolic panels were distributed on the blade,propeller hub and wake surface,and the source-sink and the dipole was evenly distributed on the panels.According to integral equation,the strength of the dipole and the souree-sink could be solved by combining with Kutta condition and kinematics boundary condition, Morino formula was used to solve induced velocity to the flow field by the source-sink and the dipole which were evenly distributed.The induced velocity of propeller in the wake flow field atter the propeller was calculated,and it was divided into three parts which were the induced velocity of propeller hub,the blade and wake surface,then analyzed the constitution and pulsating character of the induced velocity of propeller.

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Pl7xL }}^ cx0【论文关键词】 螺旋桨; 尾流场; 面元法水利论文2_1D%U x]3D
【英文论文关键词】 propeller; wake flow field; panel method水利论文G PZ3{H3x;yV

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