超臨界零囲気中での単一燃料液滴の蒸発過程の数値計算

概要

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Numerical calculation was performed to examine the evaporation process of a single fuel droplet which is immersed in an otherwise quiescent, inert gas at high pressures. The conditions under which the droplet experiences the transition from the sub-to-supercritical evaporation regime were identified in terms of the initial parameters such as ambient gas pressure and temperature and droplet temperature. Consistent with the past experimental results no singular behavior is observed in the droplet temperature change at the instant of transition. The core which is characterized by high fuel concentration behaves like a liquid droplet and can be distinguished from the other parts by a sharp but continuous change at its boundary. Once the core is about to disappear, the concentration as well as the central temperature changes rapidly to assume the gaseous state.
一般社団法人日本機械学会の論文
1991-03-25