Abstract
Thermosolutal convection in heat-salt stratification system is numerically simulated by using a turbulence closure model. The density field considered here is a simple double-diffusive system composed of linear salinity gradient heated from below. Development of multi-layers structure, merging processes of neighboring convective layers, profiles of the turbulent second order terms and other characteristic convective motions are successfully reproduced. The present analysis enables us to predict and examine not only mean density fields but also turbulent structures which have not been discussed in preceding studies so far.