Artificial tektites: an experimental technique for capturing the shapes of spinning drops.
Artificial tektites: an experimental technique for capturing the shapes of spinning drops.
复制标题
DOI：
10.1038/srep07660
复制
发表时间：
2015-01-07
影响因子：
4.6
通讯作者：
Hill RJ
中科院分区：
文献类型：
--
作者：
Baldwin KA;Butler SL;Hill RJ
确定由表面张力束缚的旋转液滴的形状是研究旋转和带电液滴的平衡形状的典型问题，该问题将原子核的稳定性模型与天文尺度的引力束缚质量的形状结合起来。高度变形的液滴的形状和它们的稳定性必须进行数值计算。尽管随着越来越复杂的计算技术的使用和计算能力的提高，此类模型的准确性有所提高，但仍然缺乏直接的实验验证。在这里，我们提出了一个实验技术，使这些形状的蜡模型使用抗磁悬浮。蜡模型类似于飞溅状的玻璃陨石，玻璃状的石头是由小行星撞击后喷出的熔融岩石形成的。正如我们在这里观察到的，许多玻璃陨石在凝固前由于飞行中的旋转而呈细长或“哑铃”形状。我们的蜡“人造玻璃陨石”的尺寸测量显示出良好的协议与平衡形状计算我们的数值模型，并与以前的模型。这些蜡模型提供了第一个直接的实验验证的数值模型的平衡形状的旋转液滴，重要的基础物理和玻璃陨石形成的研究。
Determining the shapes of a rotating liquid droplet bound by surface tension is an archetypal problem in the study of the equilibrium shapes of a spinning and charged droplet, a problem that unites models of the stability of the atomic nucleus with the shapes of astronomical-scale, gravitationally-bound masses. The shapes of highly deformed droplets and their stability must be calculated numerically. Although the accuracy of such models has increased with the use of progressively more sophisticated computational techniques and increases in computing power, direct experimental verification is still lacking. Here we present an experimental technique for making wax models of these shapes using diamagnetic levitation. The wax models resemble splash-form tektites, glassy stones formed from molten rock ejected from asteroid impacts. Many tektites have elongated or ‘dumb-bell' shapes due to their rotation mid-flight before solidification, just as we observe here. Measurements of the dimensions of our wax ‘artificial tektites' show good agreement with equilibrium shapes calculated by our numerical model, and with previous models. These wax models provide the first direct experimental validation for numerical models of the equilibrium shapes of spinning droplets, of importance to fundamental physics and also to studies of tektite formation.
登录
查看更多内容
影响因子：
--
作者：
HACHISU, I;ERIGUCHI, Y
通讯作者：
ERIGUCHI, Y
影响因子：
2.1
作者：
Heine, Claus-Justus
通讯作者：
Heine, Claus-Justus
影响因子：
2.8
作者：
Beaugnon, E;Fabregue, D;Tournier, R
通讯作者：
Tournier, R
影响因子：
2.2
作者：
Elkins-Tanton, LT;Aussillous, P;Bush, JWM
通讯作者：
Bush, JWM
影响因子：
3
作者：
COHEN, S;PLASIL, F;SWIATECKI, WJ
通讯作者：
SWIATECKI, WJ