School of Mechanical & Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798 Singapore.
Institute of Materials Research and Engineering, A*STAR, 3 Research Link, 117602 Singapore.
Phys Rev E. 2017 Oct;96(4-1):043102. doi: 10.1103/PhysRevE.96.043102. Epub 2017 Oct 3.
The Leidenfrost transition leads a boiling system to the boiling crisis, a state in which the liquid loses contact with the heated surface due to excessive vapor generation. Here, using experiments of liquid droplets boiling on a heated surface, we report a phenomenon, termed oscillating boiling, at the Leidenfrost transition. We show that oscillating boiling results from the competition between two effects: separation of liquid from the heated surface due to localized boiling and rewetting. We argue theoretically that the Leidenfrost transition can be predicted based on its link with the oscillating boiling phenomenon and verify the prediction experimentally for various liquids.
莱顿弗罗斯特转变导致沸腾系统进入沸腾危机状态，此时由于过度的蒸汽生成，液体与加热表面失去接触。在这里，我们通过在加热表面上沸腾的液滴实验，报告了莱顿弗罗斯特转变时出现的一种现象，称为振荡沸腾。我们表明，振荡沸腾是由于两种效应的竞争造成的：局部沸腾导致液体与加热表面分离和再润湿。我们从理论上证明，莱顿弗罗斯特转变可以基于其与振荡沸腾现象的联系进行预测，并通过实验验证了各种液体的预测。
