Convection in a nematic liquid crystal with homeotropic alignment and heated from below

Conference · Sun Dec 31 00:00:00 EST 1995

OSTI ID:175497

Ahlers, G ^[1]

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1. Univ. of California, Santa Barbara, CA (United States)

Experimental results for convection in a thin horizontal layer of a homeotropically aligned nematic liquid crystal heated from below and in a vertical magnetic field are presented. A subcritical Hopf bifurcation leads to the convecting state. There is quantitative agreement between the measured and the predicted bifurcation line as a function of magnetic field. The nonlinear state near the bifurcation is one of spatio-temporal chaos which seems to be the result of a zig-zag instability of the straight-roll state.

• Research Organization: Argonne National Lab. (ANL), Argonne, IL (United States)
• OSTI ID: 175497
• Report Number(s): CONF-9505200-; ON: DE96000983; TRN: 96:003531
• Resource Relation: Conference: 13. symposium on energy engineering sciences, Argonne, IL (United States), 15-17 May 1995; Other Information: PBD: [1995]; Related Information: Is Part Of Thirteenth symposium on energy engineering sciences: Proceedings. Fluid/thermal processes, systems analysis and control; PB: 275 p.
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
42 ENGINEERING NOT INCLUDED IN OTHER CATEGORIES
LIQUID CRYSTALS
FORCED CONVECTION
MAGNETIC FIELDS
HEATING
BIFURCATION
NAVIER-STOKES EQUATIONS