Abstract Millimeter-size fuel droplets burning in microgravity show substantial thermal expansion at earlier times in their burning history. Here, we develop a simple model that accounts for thermal expansion of the liquid fuel and compare it against experimental measurements. The results show that excellent agreement with measured droplet-diameter histories throughout the hot-flame period of combustion is obtained when the effect of thermal expansion is included.

中文翻译：

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燃料热膨胀的不稳定液滴燃烧

摘要 在微重力条件下燃烧的毫米级燃料液滴在其燃烧历史的早期表现出显着的热膨胀。在这里，我们开发了一个简单的模型来解释液体燃料的热膨胀，并将其与实验测量值进行比较。结果表明，当包括热膨胀的影响时，在整个燃烧的热火焰期间获​​得了与测得的液滴直径历史的极好一致性。