不可压无粘管流计算，管道中间有一正方体块，提供了管道长度直径和网格密度的参数-Incompressible stick pipe flow calculation block cube in the middle of the pipe, the length of the pipe diameter and mesh density parameter

管道内幂定律流体水平流动，估算非牛顿行流体所需的管道直径(Estimate the diameter of the pipe needed for non - Newtonian fluids)