Fluid and Particle Coarsening of Drag Force for Discrete-Parcel Approach

摘要: Abstract Fine-grid Euler–Lagrange simulations of gas-fluidization uniformly sized particles have been performed in three-dimensional periodic domains. Snapshots obtained from these systematically coarse-grained to extract filter size dependent corrections the drag law that should be employed coarse Euler–Euler (EE) simulations. Correction Coarse Multi-Phase Particle-in-Cell (MP-PIC) model is examined through a two-step process: separating coarsening fluid and particle phases. It found correction almost entirely due cells, with having only weak effect. shown for EE MP-PIC are comparable. As result, models developed can serve as good estimate simulations, vice versa.