对无重力、相对静止热环境中碳氢燃料单液滴的蒸发燃烧过程,建立了非等温液滴蒸发-火焰面燃烧耦合模型.考虑了液滴内导热、液滴表面蒸发、火焰面化学反应以及气相区对流传热传质的瞬态耦合作用.将整个耦合系统分解为液滴、火焰面内气相区、火焰面外气相区三个相对独立的计算域,采用固定计算域法与随动坐标系,结合耦合界面条件,进行数值求解.分析了液滴蒸发燃烧过程中的传热传质特性以及环境压力的影响结果表明,液滴蒸发与燃烧强烈耦合,过程后期的蒸发和火焰面动态特性与初期明显不同.
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