摘要
采用自适应网格和二阶精度Godunov型PLM格式,结合欧拉-拉格朗日模型,计算了粒子不同负载比和不同尺寸时喷管内的气粒两相流场。计算结果给出了两相流场在喷管内和轴线附近的参数分布,发现尺寸较大颗粒在喷喉下游轴线附近会形成弥散激波,使喷管出口截面上的参数呈现出不均匀性,弥散激波的区域随着负载比的增加而扩大。
Adaptive unstructured grids and second-Godunov-type PLM, together with Euler-Lagrange model were used to calculate the gas-particle two-phase flow field under the condition of different particle loading ratio and different particle sizes. The two-phase flow parameter distributions, in the nozzle and near the axis were given. It shows that the dispersed shock wave can form near the axis downstream the nozzle throat, which results in the parameter distribution uneven at the nozzle exit. The range of the dispersed shock wave can be expanded as the loading ratio increases.
出处
《弹箭与制导学报》
CSCD
北大核心
2008年第2期168-170,174,共4页
Journal of Projectiles,Rockets,Missiles and Guidance
