Interaction of Spalled Particles with Shock Layer Flow
Interaction of Spalled Particles with Shock Layer Flow
复制标题
剥落颗粒与冲击层流的相互作用
DOI：
--
复制
发表时间：
1999
期刊：
影响因子：
--
通讯作者：
Chul Park
中科院分区：
文献类型：
--
作者：
Chul Park
从理论上研究了碳质烧蚀隔热罩的分裂注入激波层中的固体颗粒对激波层流动的影响。使用多项式展开对固体颗粒的运动方程进行积分。假设粒子的初始质量和速度呈高斯分布，则通过在质量和速度分布上对一个粒子的这些生产率进行积分来计算CO、CN、C 3 的生产率和湍流能。星尘地球再入环境的结果表明，这些生产率在烧蚀壁的法线方向上近似呈指数衰减。推导出该衰减模式的幅度和斜率的相关公式。根据 arcjet 风洞测试中获得的光谱结果估算碳酚材料的粒径和初始速度下限
The influence of the solid particles injected into the shock layer by the spaliation of a carbonaceous ablating heatshield on the shock layer flow is investigated theoretically. The equation of motion of a solid particle is integrated using a polynomial expansion. Assuming a Gaussian distribution for the initial masses and velocities of the particles, the rates of production of CO, CN, C 3 , and turbulence energy are calculated by integrating those production rates for one particle over the mass and velocity distributions. The results for the environment of Stardust Earth reentry show that these production rates decay approximately exponentially in the normal direction from the ablating wall. Correlation formulas for the magnitudes and slopes of this decay pattern are derived. The lower limits of particle size and initial velocity are estimated for a carbon-phenolic material from a spectroscopic result obtained in an arcjet wind-tunnel test