Cartesian grid simulations of gas-solids flow systems with complex geometry

Journal Article · Fri Feb 01 04:00:00 EST 2013 · POWDER TECHNOLOGY

DOI:https://doi.org/10.1016/j.powtec.2012.11.028· OSTI ID:1129876

Dietiker, Jean-Francois; Li, Tingwen; Garg, Rahul; Shahnam, Mehrdad

Complex geometries encountered in many applications of gas–solids flow need special treatment in most legacy multiphase flow solvers with Cartesian numerical grid. This paper briefly outlines the implementation of a cut cell technique in the open-source multiphase flow solver—MFIX for accurate representation of complex geometries. Specifically, applications of the Cartesian cut cell method to different gas–solids fluidization systems including a small scale bubbling fluidized bed with submerged tube bundle and a complete pilot-scale circulating fluidized bed will be presented. In addition to qualitative predictions on the general flow behaviors inside each system, quantitative comparison with the available experimental data will be presented. Furthermore, some results on extending the current cut-cell technique to Lagrangian–Eulerian simulations will be presented.

• Research Organization: National Energy Technology Laboratory - In-house Research; National Energy Technology Laboratory (NETL), Pittsburgh, PA, and Morgantown, WV (United States)
• Sponsoring Organization: USDOE Office of Fossil Energy (FE)
• DOE Contract Number: FE0004000
• OSTI ID: 1129876
• Report Number(s): A-UNIV-PUB-043
• Journal Information: POWDER TECHNOLOGY, Journal Name: POWDER TECHNOLOGY Vol. 235
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
Cartesian grid
Fluidized beds
Gas–solids flow
Hydrodynamics