在压力信号的基础上，一个流体方程测算了涡流的位置和力度。
Based on the pressure signals, a flow model estimated the position and strength of the eddies.
结合动量理论和涡流理论，推导了桨叶环量方程，用广义尾流模型计算了旋翼下洗流场。
Combining momentum theory and vortex theory, rotor circulation equation was deduced. The rotor down-wash flow field was calculated using generalized down-wash flow model.
并实例计算了非线性正弦交变涡流的电机电磁场方程。
Verified by model calculation and calculated the present example electromagnetic field equation of motor on non-linear sine alternation eddy.
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