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本文对有质量引射和化学反应的局部相似层流边界层作出反应面理论分析。它导出Le_f≠1情形下的一些传质、传热关系式。作为反应面理论的一个应用,对表面材料的氧化-升华耦合过程进行了研究,阐明了氧化和升华过程从速率控制到扩散控制的过渡机理和转变条件,揭示了速率升华寓于氧化扩散控制区之中这一现象,对石墨驻点烧蚀作了计算,并与实验资料作了比较,两者定量地符合。
In this paper, the response surface theory is used to analyze the locally similar laminar boundary layer with mass ejection and chemical reaction. It derives some mass transfer, heat transfer relationships in the Le_f ≠ 1 case. As an application of the reaction surface theory, the oxidation-sublimation coupling process of the surface material has been studied. The transition mechanism and transition conditions from rate control to diffusion control of the oxidation and sublimation processes have been clarified. It is revealed that the rate sublimation is located in the oxidation diffusion control zone In this phenomenon, the stagnation of graphite stagnation was calculated and compared with the experimental data, the two quantitatively consistent.