层板孔隙结构中两个任意尺寸半球形珠状发汗的蒸发与燃烧速率分析  

Evaporation and Combustion Rate of the Two Interactive Arbitrary Size Semisphere Pearly Transpiration Droplets in Platelet Hole Structure

作　　者：张峰[1] 刘伟强[1] 

机构地区：[1]国防科学技术大学航天与材料工程学院,湖南长沙410073

出　　处：《航空学报》2007年第B08期70-75,共6页Acta Aeronautica et Astronautica Sinica

基　　金：国家自然科学基金(50276067)

摘　　要：针对微重力条件下层板孔隙结构中两个相邻任意尺寸半球形珠状发汗的蒸发与燃烧过程,建立了相应的数学物理模型;在双球坐标系中求解分子扩散传质偏微分方程,得到发汗液珠的分子扩散组分分布的解析解和扩散速率表达式;分析得到在常温、高温条件下蒸发以及燃烧状态下发汗液珠的相互作用因子式,计算了相互作用的发汗液珠在不同条件下的发汗蒸发量以及变化趋势。Physical-mathematic model is built for the process of evaporation and combustion of the two interactive arbitrary size semisphere pearly transpiration droplets in platelet hole structure under micro-gravity condition. Bispherical coordinates are applied in calculating the two transpiration droplets＇ distribution and the evaporation and combustion rate. Analytic solutions for the distributions and the interactive factors of the two transpiration droplet are obtained. Evaporation rate and combustion rate of the two interactive transpiration droplets are calculated under different conditions.

关 键 词：燃烧 蒸发 发汗 层板 解析解 

分 类 号：V434.14[航空宇航科学与技术—航空宇航推进理论与工程]