Modeling cohesionless and cohesive soils erosion near oil platforms of gravity type

This paper presents numerical simulation results of the flow effect on the cohesionless and cohesive soils erosion at the base of the gravity-type offshore platform model. Movement of the medium in which erosion occurs is described by Navier-Stokes equations. The medium is considered to be a two-component fluid in the case of the cohesive soil erosion, one component being more viscous and dense and simulating the soaked soil behavior. The medium is considered to be homogeneous for the cohesionless soil, the erosion occurring by the transport of solid particles. The results of calculations for three-dimensional problems are presented.