skip to main content

SciTech ConnectSciTech Connect

Title: Verification of sub-grid filtered drag models for gas-particle fluidized beds with immersed cylinder arrays

The accuracy of coarse-grid multiphase CFD simulations of fluidized beds may be improved via the inclusion of filtered constitutive models. In our previous study (Sarkar et al., Chem. Eng. Sci., 104, 399-412), we developed such a set of filtered drag relationships for beds with immersed arrays of cooling tubes. Verification of these filtered drag models is addressed in this work. Predictions from coarse-grid simulations with the sub-grid filtered corrections are compared against accurate, highly-resolved simulations of full-scale turbulent and bubbling fluidized beds. The filtered drag models offer a computationally efficient yet accurate alternative for obtaining macroscopic predictions, but the spatial resolution of meso-scale clustering heterogeneities is sacrificed.
 [1] ;  [1] ;  [2]
  1. Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
  2. Princeton Univ., NJ (United States)
Publication Date:
OSTI Identifier:
Report Number(s):
Journal ID: ISSN 0009-2509; AA9010100
DOE Contract Number:
Resource Type:
Journal Article
Resource Relation:
Journal Name: Chemical Engineering Science; Journal Volume: 114
Research Org:
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
Sponsoring Org:
Country of Publication:
United States
42 ENGINEERING Computational fluid dynamics (CFD); Cylinder arrays; Filtered models; Fluidization; Multiphase flow; Scale-up