Calculation of turbulent mixing layer flow subjected to strong stable stratification have been reported. The eddy viscosity and diffusivity coefficients were computed from a two-equation k-Ε turbulence model. The effect of buoyancy on turbulence can be considered at two levels. The first level is to include the buoyancy terms in governing equations. The second level is to compute the buoyancy influence by the Munk-Anderson formula. The model can be used to predict recirculating flows and complex process.
The prediction of water temperature and salinity in coastal areas is one of the essential tasks in water quality control and management. This paper takes a refined forecasting model of water temperature and salinity in coastal areas as a basic target. Based on the Navier-Stokes equation and k-epsilon turbulence model, taking the characteristics of coastal areas into account, a refined model for water temperature and salinity in coastal areas has been developed to simulate the seasonal variations of water temperature and salinity fields in the Hakata Bay, Japan. The model takes into account the effects of a variety of hydrodynamic and meteorological factors on water temperature and salinity. It predicts daily fluctuations in water temperature and salinity at different depths throughout the year. The model has been calibrated well against the data set of historical water temperature and salinity observations in the Hakata Bay, Japan.
