Small-scale validation tests for MFIX-Exa CFD-DEM
- NETL
This report describes several bench-scale fluidization experiments that can be used to validate the CFD-DEM method as encapsulated in the MFIX-Exa code. The five cases considered are the cold-flow fluidized beds of Müller et al. [1, 2], Link et al. [3] (spout-fluid), and Goldschmidt et al. [4] (bi-disperse), the hot fluidized bed of Patil et al. [5, 6], and the adsorbing fluidized bed of Li et al. [7] and Janssen [8]. In most cases, MFIX-Exa with “standard” or “typical” CFD-DEM settings, the Gidaspow drag model, and the Gunn heat transfer provide a relatively good prediction of the quantities considered: mean void fraction profiles, mean velocity profiles, fluctuating velocity profiles, mean particle temperature and segregation index. These results, with other verification and validation tests reported elsewhere, contribute to a body of work providing confidence and credibility in CFD predictions from the MFIX-Exa code.
- Research Organization:
- National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV, and Albany, OR (United States)
- Sponsoring Organization:
- USDOE Office of Fossil Energy and Carbon Management (FECM); USDOE Office of Fossil Energy and Carbon Management (FECM), Office of Carbon Management (FE-20)
- OSTI ID:
- 2589328
- Report Number(s):
- DOE/NETL-2025/4951
- Country of Publication:
- United States
- Language:
- English
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