scholarly journals Laboratory observations of double-diffusive convection using high-frequency broadband acoustics

2008 ◽  
Vol 46 (2) ◽  
pp. 355-364 ◽  
Author(s):  
Tetjana Ross ◽  
Andone Lavery
Keyword(s):  
High Frequency ◽  
Double Diffusive Convection ◽  
Diffusive Convection ◽  
Double Diffusive

The Onset of Double-Diffusive Convection in a Two-Layer System With a Viscoelastic Fluid-Saturated Porous Medium Under High-Frequency Vibration

2020 ◽  
Vol 143 (1) ◽  
Author(s):  
Moli Zhao ◽  
Huan Zhao ◽  
Shaowei Wang ◽  
Chen Yin
Keyword(s):  
Viscoelastic Fluid ◽  
High Frequency ◽  
Physical Parameters ◽  
Neutral Stability ◽  
Double Diffusive Convection ◽  
Layer System ◽  
High Frequency Vibration ◽  
Diffusive Convection ◽  
Wave Numbers ◽  
Double Diffusive

Abstract The effect of high frequency vibration in the gravity field on the double-diffusive convection in a two-layer system with a viscoelastic fluid-saturated porous layer is studied. The averaging method is employed to split the unknown functions into a periodic rapidly varying part and a slower mean part. Then, the governing equation of perturbations is numerically solved by the Chebyshev tau method and QZ decomposition method. The influence of physical parameters on the stability of system is investigated. It is shown that the neutral stability curves are bimodal under high frequency vibration. The parameter of the high frequency vibration mainly stabilizes the pure fluid layer for greater wave numbers and has a weak impact on the whole system for smaller wave numbers.

DOUBLE-DIFFUSIVE CONVECTION IN LIQUID FREON

1998 ◽  
Author(s):  
Pierre Dupont ◽  
O. Gorieu ◽  
Hassan Peerhossaini ◽  
M. Kestoras
Keyword(s):  
Double Diffusive Convection ◽  
Diffusive Convection ◽  
Double Diffusive
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