convection
; diffusion
; energy conservation
; experiment
; heat flux
; heat transfer
; interface
; mixed layer
; parameterization
; power law
; salinity
; temperature
; thermal power
英文摘要:
A laboratory experiment of two-layer diffusive convection (DC) within a rectangular cell is reported. The run-down evolution of two mixed layers and their interface is exhibited by the temperature and salinity structures, where the interface thicknesses of temperature and salinity increase with time as hT~t0.42 and hS~t0.43. Heat flux across the interface is respectively evaluated in terms of the heat energy conservation and the assumption of conductive interface. Both of them give the consistent heat flux values. When the 4/3 scaling between heat flux F and temperature difference across the interface ΔT holds (F~C(Rρ), where C(Rρ) is function of density ratio Rρ), previous heat flux parameterizations are found to have low coefficient of determination (r2≤0.5) with our heat flux data within 1.6.
State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China
Recommended Citation:
Guo S.-X.,Cen X.-R.,Zhou S.-Q.. New Parametrization for Heat Transport Through Diffusive Convection Interface[J]. Journal of Geophysical Research: Oceans,2018-01-01,123(2)