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Experimental pub crawl from Rayleigh–Bénard to magnetostrophic convection

Journal Article · · Journal of Fluid Mechanics
DOI:https://doi.org/10.1017/jfm.2022.204· OSTI ID:1924338
 [1];  [2];  [3];  [4];  [3];  [5];  [6];  [3]
  1. Univ. of California, Los Angeles, CA (United States); Argonne National Lab. (ANL), Argonne, IL (United States)
  2. Univ. of California, Los Angeles, CA (United States); Univ. of Rochester, NY (United States)
  3. Univ. of California, Los Angeles, CA (United States)
  4. Univ. of California, Los Angeles, CA (United States); Loyola Marymount Univ., Los Angeles, CA (United States)
  5. Coventry University (United Kingdom). Centre for Fluid and Complex Systems
  6. Univ. Politecnica de Madrid (Spain)
+ Show Author Affiliations
The interplay between convective, rotational and magnetic forces defines the dynamics within the electrically conducting regions of planets and stars. Yet their triadic effects are separated from one another in most studies, arguably due to the richness of each subset. In a single laboratory experiment, we apply a fixed heat flux, two different magnetic field strengths and one rotation rate, allowing us to chart a continuous path through Rayleigh–Bénard convection (RBC), two regimes of magnetoconvection, rotating convection and two regimes of rotating magnetoconvection, before finishing back at RBC. Dynamically rapid transitions are determined to exist between jump rope vortex states, thermoelectrically driven magnetoprecessional modes, mixed wall- and oscillatory-mode rotating convection and a novel magnetostrophic wall mode. Thus, our laboratory ‘pub crawl’ provides a coherent intercomparison of the broadly varying responses arising as a function of the magnetorotational forces imposed on a liquid-metal convection system.
Research Organization:
Argonne National Laboratory (ANL)
Sponsoring Organization:
Engineering and Physical Sciences Research Council (EPSRC); National Science Foundation (NSF)
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1924338
Journal Information:
Journal of Fluid Mechanics, Journal Name: Journal of Fluid Mechanics Vol. 939; ISSN 0022-1120
Publisher:
Cambridge University PressCopyright Statement
Country of Publication:
United States
Language:
English

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Related Subjects

42 ENGINEERING
Bénard convection
magneto convection
rotating flows