Numerical calculation of the particle–fluid–particle stress in random arrays of fixed particles
Min Wang, Yunchao Yang, Duan Zhang, S. Balachandar
Abstract
The phase interaction force in a multiphase flow is decomposed into a particle-mean field force and a divergence of a Particle-Fluid-Particle (PFP) stress. The particle mean field force is mainly accounted for through drag models, while the PFP stress arising from the interparticle interactions is seldom reported. Using the nearest particle statistics, the PFP stress is calculated from particle-resolved simulations. The PFP stress represents the macroscopic effect of the drafting-kissing-tumbling mechanism.
Topics & Concepts
Particle (ecology)DragStress (linguistics)MechanicsForce field (fiction)Statistical physicsPhysicsClassical mechanicsMaterials scienceGeologyOceanographyQuantum mechanicsPhilosophyLinguisticsGranular flow and fluidized bedsParticle Dynamics in Fluid FlowsLattice Boltzmann Simulation Studies