| The technology of ignition and flame spreading is one of key technology of charge design in large caliber guns, which almost chose center core igniter system. It is strong chemical reaction, high temperature, high pressure and transient state course with multidimensional effect in guns. This brought a lot of difficulties in known the burning state in guns. Especially it is more complicated in the large caliber guns, so it is very difficult to obtain information by experimental studies, and must obtain more information through the numerical simulation to solve such problems as the pressure fluctuates, unstable burning.This thesis includes the following several main points:(1)Based on the interior ballistics and calculation hydrodynamics, the two dimensional mathematics model was devalued outside the flame spreading, the one dimensional mathematics model was devalued in the flame spreading;(2)The ignition process of the modular charges was simulated by using MacCormack method;(3)The jet filed was simulated by using CE/SE method, varieties of pressure, temperature, density and velocities are analyzed;(4)Based on the idea of Chang's space-time Conservation Element and Solution Element (CE/SE) method, a new approach of CE/SE is deduced for solving 2D Euler equations on meshes and quads;(5)Compared different apertures jet flow characteristic;(6)Utilize Matlab and Excel and Origin to deal with the data, and drawing charts.
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