Reverse undercompressive shock structures in driven thin film flow.
Reverse undercompressive shock structures in driven thin film flow.
复制标题
驱动薄膜流中反转欠压冲击结构。
DOI：
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发表时间：
2002
影响因子：
8.6
通讯作者：
R. Behringer
中科院分区：
文献类型：
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作者：
Jeanman Sur;A. Bertozzi;R. Behringer
我们展示了一种新结构的实验和计算证据：一个欠压缩和反向欠压缩冲击排水膜驱动的表面张力梯度对重力。反向欠压激波对横向扰动是不稳定的，而超前欠压激波是稳定的。取决于夹断膜的厚度，由弯月面控制，无论是拖尾稀疏波或压缩冲击从反向欠压缩冲击分离。
We show experimental and computational evidence of a new structure: an undercompressive and reverse undercompressive shock for draining films driven by a surface tension gradient against gravity. The reverse undercompressive shock is unstable to transverse perturbations while the leading undercompressive shock is stable. Depending on the pinch-off film thickness, as controlled by the meniscus, either a trailing rarefaction wave or a compressive shock separates from the reverse undercompressive shock.