The Flow Characteristics Of The Gas Deflector Numerical Analysis

As modern warfare increasingly harsh battlefield environment, vehicle weapon system has a relatively high mobility, concealment and protective, and thus has wide application prospects and development. However, modern weapons and equipment on the launch vehicle performance and functionality of a higher request, the request can withstand high temperature gas jet repeated shocks, and structural strength to meet the requirements, have excellent aerodynamic properties and ablation resistance, this paper Numerical simulation of fluid dynamics and the use of the method of combining theory, these combination of the gas diffuser to carry out numerical simulation of flow characteristics. The numerical method for aerodynamic shape of the diffuser design has a certain significance.This theory is based on computational fluid dynamics (CFD), Finite Volume Method using three-dimensional NS equations, the characteristics of the rocket gas jet numerical analysis, numerical methods for aerodynamic shape deflector plate design and study of the theoretical basis for the diversion plate the improvement of the structure and properties provides a viable frame of reference, on the diversion plate design improvement has important reference value. The main contents include:(1) Based on reasonable simplifying assumptions, a reasonable physical and mathematical model of gas flow.(2) Calculated by different examples, compare the results with experiments to verify the validity of numerical methods.(3) Numerical simulation of various forms of diversion control, and numerical results were compared and analyzed.(4) Focusing on the gas flow pattern and launchers carried out by the impact analysis of the structure for the vehicle launch system improvement and protection of diversion provides a theoretical basis.