论文标题
Leidenfrost温度的理论模型
Theoretical model of the Leidenfrost temperature
论文作者
论文摘要
Leidenfrost效应是一种现象，其中一种液体倒在表面上的液体比液体的沸点明显热得多，会产生一层蒸气，可防止液体快速蒸发。一滴水没有进行身体接触，而是在表面上方悬浮。现象发生的温度称为Leidenfrost温度。尚未完全了解和预测，存在比液体的沸点高得多的leidenfrost温度的原因。在这里，我们证明了leidenfrost温度对应于描述非平衡液体蒸气界面蒸发的方程溶液中的分叉。对于水，所获得的leidenfrost温度的理论值和小于液体沸点小的液体体积的值适合文献中发现的实验结果。
The Leidenfrost effect is a phenomenon in which a liquid, poured onto a surface significantly hotter than the liquid's boiling point, produces a layer of vapor that prevents the liquid from rapid evaporation. Rather than making physical contact, a drop of water levitates above the surface. The temperature above which the phenomenon occurs is called the Leidenfrost temperature. The reason for the existence of the Leidenfrost temperature, which is much higher than the boiling point of the liquid, is not fully understood and predicted. Here we prove that the Leidenfrost temperature corresponds to a bifurcation in the solutions of equations describing evaporation of a nonequilibrium liquid-vapor interface. For water, the theoretical values of obtained Leidenfrost temperature, and that of the liquid bulk which is smaller than the boiling point of liquid, fit the experimental results found in the literature.
