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Magnetically Induced Rotating Rayleigh-Taylor Instability
Published on: March 3, 2017
El control de la capa límite de los sistemas de convección giratoria
Eric M King1, Stephan Stellmach, Jerome Noir
1Department of Earth and Space Sciences, University of California, Los Angeles, California 90095-1567, USA. eric.king@ucla.edu
Nature
|January 17, 2009
Resumen
La rotación de rotación de rotación.
Área de la Ciencia:
- La geofísica es la geofísica.
- La astrofísica es la astrofísica.
- La dinámica de fluidos es la dinámica de fluidos.
Sus antecedentes:
- La convección giratoria turbulenta influye en las características planetarias y estelares como los campos magnéticos y el flujo de calor.
- La comprensión previa sugería que el efecto de la rotación sobre la convección depende de las fuerzas de Coriolis y de la flotabilidad.
Objetivo del estudio:
- Para investigar la transición entre la convección turbulenta rotativamente dominada y la no rotativa.
- Identificar los factores clave que controlan esta transición, desafiando las teorías de equilibrio de fuerzas existentes.
Principales métodos:
- Realizó experimentos de laboratorio.
- Realizó simulaciones numéricas.
- Analizó las transiciones basadas en los espesores de la capa límite.
Principales resultados:
- La transición no se rige por la relación de fuerza global Coriolis-a-buoyancy.
- En cambio, los espesores relativos de las capas límite térmica y Ekman dictan la transición.
Conclusiones:
- Se formula una nueva teoría predictiva para la transición basada en la competencia de la capa límite.
- Esta teoría unifica los resultados experimentales anteriores y se aplica ampliamente a los sistemas de convección natural.
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