Regular and chaotic flow patterns upon impulsive spin-up of a Rayleigh-Benard convection cell Metadata

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Title

  • Main Title Regular and chaotic flow patterns upon impulsive spin-up of a Rayleigh-Benard convection cell

Creator

  • Author: Vorobieff, P.
    Creator Type: Personal
  • Author: Ecke, R.E.
    Creator Type: Personal

Contributor

  • Sponsor: United States. Department of Energy. Assistant Secretary for Human Resources and Administration.
    Contributor Type: Organization
    Contributor Info: USDOE Assistant Secretary for Human Resources and Administration, Washington, DC (United States)

Publisher

  • Name: Los Alamos National Laboratory
    Place of Publication: New Mexico
    Additional Info: Los Alamos National Lab., NM (United States)

Date

  • Creation: 1997-10-01

Language

  • English

Description

  • Content Description: A cylindrical, completely enclosed Rayleigh-Benard convection cell with radius-to-height ratio {Gamma}={1/2} is subjected to impulsive spin-up about its vertical axis. The authors study produces TLC (thermochromic liquid crystal) temperature measurements and PIV (particle image velocimetry) velocity reconstruction of the transient state between the two regimes of turbulent convection corresponding to the cell at rest and in steady rotation. The most persistent transient feature emerging is a sharply defined ringlike pattern characterized by a decrease in temperature and high azimuthal shear. The latter leads to formation of Kelvin-Helmholz vortices. Initially azimuthally regular, the pattern of these vortices loses its regularity and thus completes the transition to rotating convection state.
  • Physical Description: 7 p.

Subject

  • Keyword: Turbulent Flow
  • Keyword: Forced Convection
  • Keyword: Fluids
  • Keyword: Natural Convection
  • Keyword: Rotation
  • STI Subject Categories: 42 Engineering Not Included In Other Categories

Source

  • Conference: 4. experimental chaos conference, Boca Raton, FL (United States), 6-8 Aug 1997

Collection

  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI

Institution

  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Article

Format

  • Text

Identifier

  • Other: DE98000268
  • Report No.: LA-UR--97-3463
  • Report No.: CONF-970851--
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 538032
  • Archival Resource Key: ark:/67531/metadc690279

Note

  • Display Note: OSTI as DE98000268
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