vortex lattice method meaning in English

涡旋栅法

Study of the rudder with additional thrust fins used by non - linear vortex lattice method
非线性涡格法预报桨后舵附推力鳍水动力性能
In the first part , the steady nonlinear vortex lattice method is adopted to calculate the hydrodynamic characteristics of open water ichthyoid rudder , and the induced velocity of ichthyoid rudder is calculated using panel method
本文理论计算部分，采用定常非线性涡格法计算鱼形舵的水动力性能，用面元方法计算舵流场的诱导速度。
In the second part , firstly , the mathematical model for predicting hydrodynamic characteristics of varivec propeller under steady or unsteady condition are present , based on the general propeller lifting - surface theory , potential flow theory and green theorem . then , theoretical calculation methods for predicting hydrodynamic characteristics of varivec propeller designed above paragraphs are present , based on the finite basic solution method , the unsteady vortex lattice method and hess - smith method
在理论计算部分，本文首先基于常规螺旋桨升力面理论、势流理论和格林定理建立了定常和非定常状态下全方向推进器水动力性能计算的数学模型，然后利用有限基本解法、非定常涡格法和赫斯?史密斯方法对全方向推进器定常和非定常状态下的数学模型进行了数值离散，接下来针对前面所设计的全方位推进器进行了数值预报。