Phys. Rev. A 37, 200–206 (1988)Pattern selection in thermal convection: Experimental results in an annulusReceived 8 May 1987; published in the issue dated January 1988 Thermal convection is experimentally studied in an annular cell with free-free boundary conditions: A silicon oil floating on mercury and in contact with air. Surface tension forces are comparable to buoyancy forces in driving the convection. The transition to a cellular pattern of rolls is via a forward bifurcation. Above the onset there is a broad band of stable roll patterns differing in their wavelength. Inserting a radial wall in the cell reduces considerably the band of stable patterns and modulates their wavelength. © 1988 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.37.200
DOI:
10.1103/PhysRevA.37.200
PACS:
47.20.Dr
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