Numerical Simulation And Analysis Of Muzzle Flow Field Of A Mortar

The mortar uses the muzzle loading. At innersole, the basic medicine needs a suitable energy of motion to impacts hammer needle which could produce fire. During the loading process, the mortar ammunition sped down under the effect of gravity. The speed at innersole is related to the space between the mortar ammunition with gun barrel. If the gap is overlarge or too small, the gap will lead to a serious of negative effects, for example the mortar cannot guarantees the projectile dispersion, the firing kinetic energy and the firing rate. The transport power law of pill and the regularities distribution of flow field were simulated and analyzed. The paper utilizes the coupling arithmetic between the powder gas pressure and pill. Analyzing the gap by the theory of computational fluid mechanics is significant to the design of mortar.In launching procedure, the firing gas pressure lead to high level pressure in gunner region. In order to maintain the excellent move ability, the mortar does not have enough protection facility usually. So the damage to gunner will be worse. Based on computational fluid dynamic and optimization design theory, the flow field dynamic in gun muzzle was simulated and analyzed. The major tasks of the paper include the regular pattern of the flow field dynamic in muzzle and the overpressure in gunner area. In order to reduce the overpressure in gunner area, the thesis adds a simple equipment which was called as The Wave-Seduction in muzzle. At the same time, the hypothesis was tested by the theory of computational fluid mechanics. In the interests of efficiency, the device was optimized in the theory of computational fluid mechanics and optimization. Then the paper got the suitable^ vital measurement.