The effect of Schmidt number on gravity current flows: The formation of large-scale three-dimensional structures

The Schmidt number, defined as the ratio of scalar to momentum diffusivity, varies by multiple orders magnitude in real-world flows, with large differences diffusivity between temperature, solute, and sediment driven flows. This is especially crucial gravity currents, where flow dynamics may be or sediment, yet effect number on structure currents poorly understood. Existing numerical work has typically assumed a near unity, despite impact development fine-scale structure. few investigations considering high have relied heavily two-dimensional simulations when discussing effects, leaving three-dimensional features unknown. In this paper, direct constant-influx solute-based Reynolds numbers 100?Re?3000 1 are presented, considered cases (Re,Sc)=(100,10), (100,100), (500, 10). These data used establish different properties such density distribution interface stability. It shown that increasing from leads substantial structural changes not seen increased range here. Recommendations made regarding lower assumptions, usually reduce computational cost.