POOL BOILING OF A NONAZEOTROPIC BINARY MIXTURE UNDER MICROGRAVITY
POOL BOILING OF A NONAZEOTROPIC BINARY MIXTURE UNDER MICROGRAVITY
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DOI：
10.1016/0017-9310(94)90282-8
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发表时间：
1994-11-01
影响因子：
5.2
通讯作者：
NAGASHIMA, A
中科院分区：
文献类型：
--
作者：
ABE, Y;OKA, T;NAGASHIMA, A
用非共沸水-乙醇混合物在490米自由落体的10秒微重力条件下进行了池沸实验。与地面条件相比，微重力条件下沸腾换热增强。对透明玻璃板加热器背面的观察表明，在微重力条件下，乙醇浓度梯度导致乙醇沿着与加热器表面分离但仍靠近加热器表面的扩大蒸气泡表面优先蒸发，从而诱发了马兰戈尼流。
Pool boiling experiments with non-azeotropic water-ethanol mixtures were conducted under 10-second microgravity conditions available from a drop shaft facility with a 490 m free fall. Comparing with the terrestrial condition, the boiling heat transfer was enhanced under microgravity. The observation from the back side of a transparent glass plate heater suggests that the enhancement could be ascribed to the Marangoni flow induced by an ethanol concentration gradient due to preferential evaporation of ethanol along the surface of enlarged vapor bubbles detached from, but still kept close to, the heater surface under microgravity.