The surface of propeller and its trailing vortex is divided into a number of small hyperboloidal quadrilateral panels with constant sourcesink and doublet distributions.
螺旋桨表面和它的尾涡面离散为四边形双曲面元，每个面元上布置等强度偶极子和源汇分布。
2
In this paper, the effect of compression does not be treated with PrandtI-Glauert's transformation, bat directly treated with compressible source (sink) and vortex.
压缩性的影响本文不采用P—G转换，而是直接使用可压缩空间后掠马蹄涡和源(汇)。
3
By different nitrogen treatments and manual regulation of source-sink ratio, dynamic states of bleeding at neck-panicle node and basal internode of rice were studied.