arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 2409.00385physics.flu-dyn
收藏

后退接触线的冻结

Freezing receding contact lines

Rodolphe Grivet, Axel Huerre, Thomas Séon, Laurent Duchemin, Christophe Josserand

AI总结:

本文实验研究Peltier模块从水浴中恒速拉出时后退接触线的冻结过程,发现弯月面高度决定流动性质,并通过数值求解弯月面方程得出水在冰上的接触角约为6度。

摘要:

我们通过实验研究了当Peltier模块以恒定速度从水浴中拉出时接触线的后退过程,同时冰层也在Peltier模块上以恒定速度生长。因此,在本研究使用的所有参数下都达到了稳态,对应于一个动力学稳定的弯月面。我们表明,弯月面的高度提供了流动的大部分性质。对于高拉出速率,它与等效Landau-Levich(LL)膜从水浴中提取的液体量相关,该液体最终随着板向上提升而冻结。对于较小的速度,即在不冻结的情况下不会形成LL膜时,弯月面高度直接与这些条件下水在冰上的接触角相关。通过数值求解考虑水凝固的弯月面方程,我们的结果表明水在冰上的接触角应约为$6^\circ$。

英文摘要:

We investigate experimentally the receding of a contact line when a Peltier module is pulled out of a water bath at constant speed, while a ice layer is also growing at constant speed on the Peltier module. A steady regime is therefore reached for all the parameters used in this studied, corresponding to a dynamical stationnary meniscus. We show that the height of the meniscus provides most of the properties of the flow. For high pulling rate, it is related to the amount of liquid of the equivalent Landau-Levich (LL) film that would be extracted from the bath, which is eventually freezing as the plate is lifted upward. For smaller velocity, so that no LL film would be formed without freezing, the meniscus height is directly linked to the contact angle of water on ice in these conditions. Solving numerically the meniscus equation taking into account the solidifcation of water, our results suggest that the contact angle of water on ice should be around $6^\circ$.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑