Modeling of Particle Filtration in a Porous Medium with Changing Flow Direction

In the design and construction of tunnels, dams and other hydraulic engineering structures modeling of the groundwater flow is necessary. Deep bed filtration of suspension in a porous medium is considered. Forward flow of suspension periodically changes to back flow of clean water and vice versa. Partial lifting of retained particles at the moments of flow direction changes is modeled. Numerical analysis of suspended and retained particles concentrations is carried out. It is shown that at periodic change of flow detection the change of concentrations of suspended and retained particles rapidly reaches a periodic mode.