摘要
采用Lagrange方法,研究了超声速气流中含灰气体点源的流动特性,求得了对称轴附近激波层内的流动参数· 计算数值模拟结果揭示了大惯性颗粒在激波层内沿着相互交叉的振荡轨迹运动,颗粒分布形成了高、低密度层交错出现的"多层结构"。
By using Lagrangian method,the flow properties of a dusty_gas point source in a supersonic free stream were studied and the particle parameters in the near_symmetry_axis region were obtained.It is demonstrated that fairly inertial particles travel along oscillating and intersecting trajectories between the bow and termination shock waves.In this region,formation of 'multi_layer structure' in particle distribution with alternating low_ and high_density layers is revealed.Moreover,sharp accumulation of particles occurs near the envelopes of particle trajectories.
出处
《应用数学和力学》
EI
CSCD
北大核心
2003年第8期821-826,共6页
Applied Mathematics and Mechanics
基金
国家自然科学基金资助项目(90205024)
俄罗斯基础研究基金资助项目(02_10_00770)
俄罗斯_中国双边合作基金资助项目(99_01_39020)
关键词
含灰气体
超声速流动
点源
粒子惯性
轨迹交叉
多层结构
dusty gas
supersonic flow
point source
particle inertia
trajectory intersection
multi-layer structure
