Experiment And Numerical Research On The Launch With Gas Curtain By The Impact Of Cross Flow

As modern warfare increasingly high demands on the weapon, so improve the concealed weapons and improve its ability to fight against becomes a major research direction in the body. Underwater vehicle,because of its special hidden ability are popular among weapons experts. But submarine body launch in gas, steam, liquid multiphase flow environment, Mechanical environment is very complicated, ocean currents and bubble collapse factors such as single or additive will affect the motion characteristics of the sail body.At present there are mainly wet launch and seal the two, Bodies under the two emission in the process of movement vulnerable to the adverse factors., in 2006 yagla proposed a new way of transmitting gas curtain launch, the launch is the formation of a gas passage between the launch tube and the water, launch vehicle movement out of the water in the gas channel.In this paper, through experiment and numerical simulation method of combining the water under the action of the presence of cross flow the formation law of air curtain, air curtain and the movement of bodies, were studied.In the aspect of experiment research with concentric canister launch combined with underwater high-speed jet presence of cross flow under the action of the generation and development regularity and morphological features of gas curtain underwater, In the aspect of numerical simulation provided by CFD commercial software Fluent,CFX, to simulate the presence of cross flow under the action of the generation and development regularity of gas curtain underwater and comparing experiments, and simulation research on cross flow underwater bodies under the action of hydrodynamic. Finally combining experiments and numerical calculation show the superiority of the air curtain launch.