DNS results (Nusselt number) for: The effect of rotation on double diffusive convection: Perspectives from linear stability analysis ...

• Main Authors: Liang, Yu, Carpenter, Jeffrey, Timmermans, Mary-Louise
• Format: Dataset
• Language: English
• Published: Dryad 2021
• Subjects: FOS Physical sciences; Arctic; Arctic Ocean
• Online Access: https://dx.doi.org/10.5061/dryad.8sf7m0cmp; https://datadryad.org/stash/dataset/doi:10.5061/dryad.8sf7m0cmp

Diffusive convection can occur when two constituents of a stratified fluid have opposing effects on its stratification and different molecular diffusivities. This form of convection arises for the particular temperature and salinity stratification in the Arctic Ocean and is relevant to heat fluxes. Previous studies have suggested that planetary rotation may influence diffusive-convective heat fluxes, although the precise physical mechanisms and regime of rotational influence are not well understood. A linear stability analysis of a temperature and salinity interface bounded by two mixed layers is performed here to understand the stability properties of a diffusive-convective system, and in particular the transition from non-rotating to rotationally-controlled heat transfer. Rotation is shown to stabilize diffusive convection by increasing the critical Rayleigh number to initiate instability. In the rotationally-controlled regime, a -4/3 power law is found between the critical Rayleigh number and the Ekman ... : The dataset contains simulation results from DNS. Time series of the Nusselt number are stored in .txt files. ...