Multiscale Simulation with a Two‐Way Coupled Lattice Boltzmann Method and Discrete Element Method. Issue 9 (10th August 2017)

• Record Type: Journal Article
• Authors: Maier, Marie-Luise; Henn, Thomas; Thaeter, Gudrun; Nirschl, Hermann; Krause, Mathias J.
• Other Names: Nirschl Hermann guestEditor.
• Is Part Of: Chemical engineering & technology. Volume 40:Issue 9(2017)
• Page Start: 1591
• Page End: 1598
• Publication Date: 2017-08-10
• Subjects: Discrete element method -- Lattice Boltzmann method -- Multiscale simulation -- Point particle -- Two‐way coupling; Chemical engineering -- Periodicals; Chemical processes -- Periodicals; 660.05
• DOI: 10.1002/ceat.201600547
• Languages: English
• ISSNs: 0930-7516

Abstract

Abstract: Simulations are helpful to better understand the dynamics and interactions of large numbers of particles and fluid in processes that occur in chemical or process engineering. Depending on whether the suspension is dense, dilute or semi‐dilute, the particles and fluid can be mutually affected. Here, a lattice Boltzmann method for the fluid is combined with a discrete element method for the particles which were treated as point particles. Both are two‐way coupled by drag forces, based on momentum exchange. Single‐particle sedimentation is chosen as a first validation example for one‐ and two‐way coupling. For dense suspensions, contact forces are necessary and a scenario for two colliding particles is verified before the simulation of a multiparticle block is performed. Abstract : Simulations are a valuable tool to better understand how particles behave in fluids in chemical and process engineering. Particle concentration can differ widely within the simulation domain. A lattice Boltzmann method is two‐way coupled with a discrete element method for the particles treated as point particles. Two‐way coupling is validated in the case of single‐particle sedimentation.