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Parametric Resonance Convection in a Modulated Gravity Field

[+] Author Affiliations
Gennady F. Putin, Mikhail P. Zavarykin, Alexey V. Zyuzgin

Perm State University

Paper No. IMECE2005-80714, pp. 579-588; 10 pages
  • ASME 2005 International Mechanical Engineering Congress and Exposition
  • Heat Transfer, Part B
  • Orlando, Florida, USA, November 5 – 11, 2005
  • Conference Sponsors: Heat Transfer Division
  • ISBN: 0-7918-4222-3 | eISBN: 0-7918-3769-6
  • Copyright © 2005 by ASME


Experiments were performed to examine the influence of vertical oscillations of inertia field on convection instability and flows patterns in a horizontal fluid layer heated from one wide side and cooled from another one. Two cases are considered: when the fluid layer was heated from below and from above. The temperature sensors were used for measurement of heat transport across the layer. Visualization of flow patterns was provided by stroboscopic lighting and powdered aluminum. The parametric resonance excitation of convection under heating from above, as well as dynamical stabilization of statically unstable states, long-wave mode and parametric resonance under heating from below realized. The earlier unknown instability regions and convection structures are discovered. The results indicate that with the use of an oscillating inertia field it is possible to control the convection stability, intensity of the heat transfer and the structure of convection motions.

Copyright © 2005 by ASME



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