• Corpus ID: 202540173

Benchmarking of a preliminary MFiX-Exa code

  title={Benchmarking of a preliminary MFiX-Exa code},
  author={William D. Fullmer and Ann S. Almgren and Michele Rosso and Johannes Blaschke and Jordan Musser},
  journal={arXiv: Fluid Dynamics},
MFiX-Exa is a new code being actively developed at Lawrence Berkeley National Laboratory and the National Energy Technology Laboratory as part of the U.S. Department of Energy's Exascale Computing Project. The starting point for the MFiX-Exa code development was the extraction of basic computational fluid dynamic (CFD) and discrete element method (DEM) capabilities from the existing MFiX-DEM code which was refactored into an AMReX code architecture, herein referred to as the preliminary MFiX… 

MFIX-Exa: A path toward exascale CFD-DEM simulations

The fundamental physics models follow those of the original MFIX, but the combination of new algorithmic approaches and a new software infrastructure will enable MFIX-Exa to leverage future exascale machines to optimize the modeling and design of multiphase chemical reactors.

Performance comparison of CFD-DEM solver MFiX-Exa, on GPUs and CPUs

Weak scaling results indicate superior parallel efficiencies when using GPUs compared to CPUs for the problem sizes studied in this work.



MFIX documentation numerical technique

Bbling fluidized bed simulations conducted with a second order scheme show that the predicted bubble shape is rounded, unlike the (unphysical) pointed shape predicted by the first order upwind scheme.

DEM Predictions of NETL Small Scale Challenge Problem

The Discrete Element Method (DEM) coupled to Computational Fluid Dynamics (CFD) is used to predict dense fluid-particle system in a blind study using the in-house code GenIDLEST (Generalized

An efficient and reliable predictive method for fluidized bed simulation

In past decades, the continuum approach was the only practical technique to simulate large-scale fluidized bed reactors because discrete approaches suffer from the cost of tracking huge numbers of

Numerical Simulation and Experimental Study of the Gas–Solid Flow Behavior Inside a Full-Loop Circulating Fluidized Bed: Evaluation of Different Drag Models

Both experimental and computational studies of the fluidization of high-density polyethylene (HDPE) particles in a small-scale full-loop circulating fluidized bed (CFB) are conducted. Experimental

PEPT and discrete particle simulation study of spout‐fluid bed regimes

The results of a combined experimental and simulation study on the flow regimes that can be encountered during spout-fluid bed operation are reported. A regime map for a three-dimensional (3D)