In ocean engineering realm, fluid drags are computed by Morison equation with drag coefficient defined by a function of Renold number and attack Angle.
在海洋工程领域，计算软管流体阻力采用莫里逊公式，其中阻力系数是双参数迎角和雷诺数的函数。
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The combination of a N-S equation flow solver with a nonlinear optimization method is used to design a new airfoil with high ratio of lift over drag.
Based on the test results and movement equation established, the relationship between drag coefficient and tubular shape is obtained and the drag force imposed on pipe is calculated.