航空学报 > 2007, Vol. 28 Issue (增): 70-75

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

张峰,刘伟强   

  1. 国防科学技术大学 航天与材料工程学院
  • 收稿日期:2006-10-25 修回日期:2007-07-06 出版日期:2007-08-10 发布日期:2007-08-10
  • 通讯作者: 刘伟强

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

ZHANG Feng,LIU Wei-qiang   

  1. College of Aerospace and Material Engineering, National University of Defense Technology
  • Received:2006-10-25 Revised:2007-07-06 Online:2007-08-10 Published:2007-08-10
  • Contact: LIU Weiqiang

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。

关键词: 燃烧, 蒸发, 发汗, 层板, 解析解

Abstract:

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.

Key words: combustion,  , evaporation,  , transpiration,  , platelet,  , analytic , solution

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