Details

Autor(en) / Beteiligte

• Zhao, Moli
• Zhao, Huan
• Wang, Shaowei
• Yin, Chen

Titel

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

Ist Teil von

• Journal of heat transfer, 2021-01, Vol.143 (1)

Ort / Verlag

ASME

Erscheinungsjahr

2021

Quelle

ASME_美国机械工程师学会现刊

Beschreibungen/Notizen

• 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.