A Launcher In The Flow Field Numerical Simulation And Structure Improvement Design

The concentric canister is a transmitting device, and the advantages of small volume, because more and more pay attention to light quality etc.. However, when navigating body emitting device running in the concentric canister, due to high temperature and high pressure gas, the impact effect of making the device to withstand gas considerable, and the high temperature and high pressure gas from within the device is discharged to the outside investigation device performance superior ability is also an important indicator of the. This paper is based on a concentric canister launcher as the research object, the main research contents are as follows:1.In determining the fluid use special software FLUENT to research object, establishes the mathematical model of the research object, the division grid reasonable and consulting relevant books, write out the corresponding C language program, simulation set sail for body in the process of operation, the whole device environment.2.Study of moored vehicle. First determine the gas entrance and the bottom plate are constant, and on this basis, through the gap size change device of inner and outer cylinder, pressure distribution, research on the influence of gas temperature and gas device in the device, the selected inner and outer barrel clearance of the final fit; then, based on the inner outer cylinder gap is determined, by the change of the gas entrance and the bottom of the range, to study its effect on the flow field in the device, the appropriate distance and final selection.3.Emission improvement design of device structure. Based on the above research results, using the moving grid technique to simulate the navigation from the barrel, and study its tube, gas discharge tube flow trend from inside and outside the gap, and to analyze the influence factors of flow gas export out outside, proposed the corresponding improvement programs, and the improved scheme simulation analysis and comparison, to a temperature and pressure at the outlet of the size and scope of gas movement trend as the basis, the most rational improvement scheme for the selection of.This study provides an effective method for the research on flow field in concentric cylinder, and also provides certain reference formulation and design of stiffness, thermal protection parameters such as device.