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Title: Periodic Boundary Motion in Thermal Turbulence

Abstract

A free-floating plate is introduced in a Benard convection cell with an open surface. It partially covers the cell and distorts the local heat flux, inducing a coherent flow that in turn moves the plate. Remarkably, the plate can be driven to a periodic motion even under the action of a turbulent fluid. The period of the oscillation depends on the coverage ratio, and on the Rayleigh number of the convective system. The plate oscillatory behavior observed in this experiment may be related to a geological model, in which continents drift in a quasiperiodic fashion. (c) 2000 The American Physical Society.

Authors:
 [1];  [2];  [1]
  1. Center for studies in Physics and Biology, Rockefeller University, New York, New York 10021 (United States)
  2. (United States)
Publication Date:
OSTI Identifier:
20216437
Resource Type:
Journal Article
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 84; Journal Issue: 19; Other Information: PBD: 8 May 2000; Journal ID: ISSN 0031-9007
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; CONVECTIVE INSTABILITIES; TURBULENCE; HEAT FLUX; BOUNDARY CONDITIONS; GEOLOGIC MODELS; EXPERIMENTAL DATA

Citation Formats

Zhang, Jun, Applied Mathematics Laboratory, Courant Institute, New York University, New York, New York 10012, and Libchaber, Albert. Periodic Boundary Motion in Thermal Turbulence. United States: N. p., 2000. Web. doi:10.1103/PhysRevLett.84.4361.
Zhang, Jun, Applied Mathematics Laboratory, Courant Institute, New York University, New York, New York 10012, & Libchaber, Albert. Periodic Boundary Motion in Thermal Turbulence. United States. doi:10.1103/PhysRevLett.84.4361.
Zhang, Jun, Applied Mathematics Laboratory, Courant Institute, New York University, New York, New York 10012, and Libchaber, Albert. Mon . "Periodic Boundary Motion in Thermal Turbulence". United States. doi:10.1103/PhysRevLett.84.4361.
@article{osti_20216437,
title = {Periodic Boundary Motion in Thermal Turbulence},
author = {Zhang, Jun and Applied Mathematics Laboratory, Courant Institute, New York University, New York, New York 10012 and Libchaber, Albert},
abstractNote = {A free-floating plate is introduced in a Benard convection cell with an open surface. It partially covers the cell and distorts the local heat flux, inducing a coherent flow that in turn moves the plate. Remarkably, the plate can be driven to a periodic motion even under the action of a turbulent fluid. The period of the oscillation depends on the coverage ratio, and on the Rayleigh number of the convective system. The plate oscillatory behavior observed in this experiment may be related to a geological model, in which continents drift in a quasiperiodic fashion. (c) 2000 The American Physical Society.},
doi = {10.1103/PhysRevLett.84.4361},
journal = {Physical Review Letters},
issn = {0031-9007},
number = 19,
volume = 84,
place = {United States},
year = {2000},
month = {5}
}