Onset of Surface-Tension-Driven Bénard Convection.
Onset of Surface-Tension-Driven Bénard Convection.
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DOI：
10.1103/physrevlett.75.1938
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发表时间：
1995-07
影响因子：
8.6
通讯作者：
Michael F. Schatz;S. Vanhook;W. D. McCormick;J. Swift;H. Swinney
中科院分区：
文献类型：
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作者：
Michael F. Schatz;S. Vanhook;W. D. McCormick;J. Swift;H. Swinney
阴影图可视化实验揭示了薄液层中亚临界向六边形对流模式的转变，该液层具有自由的上表面并从下方加热。测量的临界马兰戈尼数 (84) 和观察到的滞后 ($3%$) 与理论一致。在一些实验中，观察到不完美的分叉，并将其归因于部分由实验中的横向边界引起的确定性强迫。
Experiments with shadowgraph visualization reveal a subcritical transition to a hexagonal convection pattern in thin liquid layers that have a free upper surface and are heated from below. The measured critical Marangoni number (84) and observation of hysteresis ( $3%$) agree with theory. In some experiments, imperfect bifurcation is observed and is attributed to deterministic forcing caused in part by the lateral boundaries in the experiment.