Phys. Rev. Lett. 45, 634–637 (1980)Forced Phase Diffusion in Rayleigh-Bénard ConvectionReceived 21 March 1980; published in the issue dated 25 August 1980 The first experimental evidence of the diffusive character of the phase variable which describes the position of the convective rolls is presented. To produce a phase modulation a small alternating flow in a slightly supercritical fluid layer is injected. With use of this method, the diffusion coefficient D∥ concerning the propagation of phase disturbances parallel to the roll axis is measured. © 1980 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.45.634
DOI:
10.1103/PhysRevLett.45.634
PACS:
47.25.Jn, 47.20.+m
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