The surface of propeller, hub and the vortex of blade is discreted by a number of small hyperboloidal quadrilateral panels with constant source and doublet distribution.

• 桨叶、桨毂表面和螺旋桨尾涡面采用四边形双曲面元离散，以消除面元间的间隙。由于导管的存在，螺旋桨尾涡面模型没有收缩，采用等半径向下游溢出。