The Effect of Time-Periodic Heating on the Stability of a Horizontal Double-Diffusive Fluid Layer

Shinichiro Yanase

doi:10.1143/JPSJ.55.1130

The Effect of Time-Periodic Heating on the Stability of a Horizontal Double-Diffusive Fluid Layer

Shinichiro Yanase

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4 Citations (Scopus)

Abstract

The effect of the time-periodic temperature oscillation upon the stability of a horizontal fluid layer in the presence of a stable salinity gradient is studied theoretically using the Galerkin method. The results of numerical calculation show that the critical Rayleigh number Ra_c becomes minimum at a certain positive value of the saline Rayleigh number Rs. The destabilizing effect of the salinity stratification is found to be due to the coupling of the oscillating basic temperature field with the salinity disturbance.

Original language	English
Pages (from-to)	1130-1138
Number of pages	9
Journal	journal of the physical society of japan
Volume	55
Issue number	4
DOIs	https://doi.org/10.1143/JPSJ.55.1130
Publication status	Published - Apr 1986

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1143/JPSJ.55.1130

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abstract = "The effect of the time-periodic temperature oscillation upon the stability of a horizontal fluid layer in the presence of a stable salinity gradient is studied theoretically using the Galerkin method. The results of numerical calculation show that the critical Rayleigh number Rac becomes minimum at a certain positive value of the saline Rayleigh number Rs. The destabilizing effect of the salinity stratification is found to be due to the coupling of the oscillating basic temperature field with the salinity disturbance.",

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AB - The effect of the time-periodic temperature oscillation upon the stability of a horizontal fluid layer in the presence of a stable salinity gradient is studied theoretically using the Galerkin method. The results of numerical calculation show that the critical Rayleigh number Rac becomes minimum at a certain positive value of the saline Rayleigh number Rs. The destabilizing effect of the salinity stratification is found to be due to the coupling of the oscillating basic temperature field with the salinity disturbance.

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The Effect of Time-Periodic Heating on the Stability of a Horizontal Double-Diffusive Fluid Layer

Abstract

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