Research on axial force of fluid coupling based on 3-D flow numerical solution

Axial force calculation based on 3-D flow field numerical solution is carried out to enhance the calculation precision of the fluid coupling. First, the calculation method of the axial force is described, and the axial force is calculated based on the pressure and velocity fields from CFD under different working states and fluid volume percentages. The results show the axial force is small and changes less against the speed ratio under small fluid volume percentage; the axial force is greater and changes dramatically against the speed ratio and fluid volume percentage under greater fluid volume percentage; the axial force is greater under starting state and rated state.