Numerical simulation on flow characteristics of large-scale submarine mudflow

Gas hydrate (GH) is widely distributed in the world according to geological survey. Most of GH located ocean. After dissociation, strength gas bearing sediments (GHBS) decreases accompanying rise pore pressure, which can cause marine landslide. Landslide may transform into mudflows during movement on seabed. The massive submarine mudflow result serious deformation (or even damage of) pipelines, dumping offshore platforms, and tsunamis. In this paper, flow characteristics large-scale are investigated based Euler-Euler multiphase model combining with kinetic theory granular (KTGF). controlling dimensionless parameters, such as initial depositional form relative depth, given. hydroplaning frontal detachment mass captured. front velocity mudflow, free surface elevations at sea level analyzed. numerical results show that has a significant impact level. should be taken consideration design pipelines platforms GH-distributed area duo its great destructive power.