第二代低阶面元法耦合自由尾迹计算旋翼桨叶气动载荷

摘要

采用第二代低阶面元法耦合自由尾迹预估修正法计算旋翼在轴流状态下的气动载荷.在计算中考虑桨叶的三维几何特性,采用矩形、三角形单位平面重构桨叶几何外形；桨叶尾迹采用全展尾迹,其中包括三圈自由尾迹(近尾迹)和四圈远尾迹；并利用桨叶翼型风洞试验数据对气动载荷进行粘性修正.通过和CFD方法进行对比分析,证明了所采用的计算方法的优点.%A method using second generation of Low-Order Panel Method coupled with Pseudo-Implicit Free-Wake-Calculation to calculate the rotors aerodynamic load is presented in this thesis. The three-dimensional geometric property of blade is considered in the calculation. Triangular and quadrilateral panel is used to reconstruct the rotor blade. The full span wake model is used in this method, which contains three cycles of free wake (near wake) and four cycles of far wake. The blade airfoil wind tunnel test data is used for viscous correction on aerodynamic loads. Comparison with CFD method confirms advantages of this method.