Hexagonal Structure in Intermediate Aspect Ratio BéNard-Marangoni convection

In the present work, an isolated hexagonal structure is studied for the intermediate aspect ratio Benard–Marangoni convection. Experimental and numerical results are contrasted, providing an alternative interpretation of the hexagon: Numerical results show that the hexagonal pattern can be reproduced by the overlapping of only two proper modes, which are numerical solutions of a linear analysis for the cylindrical problem with realistic boundary conditions. Experimental and numerical streamlines are compared. In bulk, this 3D structure gives rise to 2D streamlines, forming warped figures.

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