A Numerical Investigation of Transformation Rates from Debris Flows to Turbidity Currents under Shearing Mechanisms

The evolution of a submarine landslide is very complicated process due to slurry–water interactions. Most previous studies have focused on debris flows or turbidity currents independently. Little research has been conducted the processes transformation from into currents. Moreover, underlying mechanical mechanisms these are not well understood. In this study, we aimed better understand by simulating transportation using computational fluid dynamics. numerical models, two-phase mixture module was adopted mimic interactions slurry with ambient water, which validated through dam-break case. Here, rheological behaviors slurries described Herschel–Bulkley model. A formula for rates best fitted case series flows. particular, activation stress expressed dynamic pressure at moment when starts mobilize, as coefficient 6.55 × 10−5 times shear strength. Then, two coefficients in rate 1.61 and 0.26, respectively, based cases flows, considering their different initial thicknesses, levels consistency slope angles. Finally, real-scale flow demonstrate that fully transformed before it deposited. expected outcome, theory, would be applied assess influence area realistic harm subsea environment.