TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B · 1991 · 40 citations · 0 references
EngineeringComputational EngineeringPhysicsComputational Fluid DynamicsFluid DynamicsFluid MechanicsFlow BehaviorFlow ModelingFluid-structure InteractionInterfacial HydrodynamicsParticle-laden FlowsPipe FlowContact Force ModelingGranular Flow DynamicsGranular Flow ModelingGranular Flow SimulationHorizontal Pipe FlowNumerical SimulationPlug FlowPlug Flow Behavior
Plug flow of cohesionless granular material in a horizontal pipe was numerically simulated. The movement of each particle in a calculation region, which has periodic boundaries on its inlet and outlet, was solved. Contact force was modeled with springs, dashpots, and a slider. Repulsion force of the spring was given based on the contact theory of homogeneous isotropic elastic objects. The damping coefficient of the dashpot was given so as to make the coefficient of rebound constant. As a result, stable plug flow was observed in the present calculation. It is confirmed that the behavior of the plug and each particle is similar to the experimentally observed behavior.