Using the generalized matrix method based on non Cartesian tensor analysis with physical base, the continuity equation and Navier Stokes equations in nonorthogonal helical coordinate system are derived.

• 利用基于带有物理基的非笛卡儿张量分析的广义矩阵法，在非正交的螺旋线坐标系中，推导出了连续性方程和Navier－Stokes方程组。