Numerical research on the process of launching submarine missile by concentric canister launcher

The complex multiphase flow of the concentric canister launcher (CCL) of the vertical underwater launched missile was studied. By means of MIXTURE model and Cavitation model which take into account the effects of fluid compressibility, viscosity, gravity and energy transfer of gas and water, N-S equation and standard k-ε turbulence model of the multiphase mixture medium were solved by using the finite volume method (FVM) and SIMPLE arithmetic. The flow field of mixture medium and the missile motion were coupled with the assistance of dynamic meshes method and sliding meshes method. The calculation results reveal the evolution progress, flow field configuration and hydrodynamic characteristics of the complex unsteady multiphase flow in CCL during the vertical launching of an underwater missile.