Numerical Study of Density-Current Surges

摘要: The marker and cell technique for the calculation of time‐dependent incompressible flows is used to study density‐current surges at density ratios between 1.05 3.0. performed using full two‐fluid approach as well a single‐fluid involving solute transport Boussinesq approximation Navier‐Stokes equation. A comparison these results indicates that reasonably accurate less than 1.3. free surface confined flow calculations are compared effects slope, viscosity, tension on current examined. Complete descriptions given first time techniques including in calculations, an analysis calculational stability properties method included. numerical results, which good agreement with available experimental measurements, provide information about some previously univestigated aspects flows. Of particular importance here variation front velocity height ratio, range, 1.2‐3.0. New analytical treatments initial surge, steady flow, viscosity presented computed results.