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Numerical Flow Visualization in Basic- and Hyper-Cluster SpheresPacked spherical particle beds have wide applications throughout the process industry and are usually analyzed using an appropriate combination of laminar and turbulent flows with empirically derived coefficients of which the Ergun (1952) relation is probably the best known. The 3-D complexity of the void distribution within the beds has precluded detailed studies of sphere clusters. Numerical modeling and flow vector visualization for the basic tetra- and hexa-sphere clusters and two hyper-sphere clusters are presented at two Reynolds numbers, 400 and 1200. Cutting planes are used to enable visualization of the complex flows generated within the sphere clusters and are discussed herein. The boundary conditions and flow fields for the simple clusters are also compared to the hyper-clusters with larger variations found for hexa-clusters.
Document ID
19970017585
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Hendricks, R. C. (NASA Lewis Research Center Cleveland, OH United States)
Athavale, M. M. (CFD Research Corp. Huntsville, AL United States)
Braun, M. J. (Akron Univ. Akron, OH United States)
Lattime, S. (B and C Engineering Associates, Inc. Akron, OH United States)
Date Acquired
September 6, 2013
Publication Date
February 1, 1997
Subject Category
Aircraft Propulsion And Power
Report/Patent Number
E-10521-1
NASA-TM-107361
NAS 1.15:107361
Meeting Information
Meeting: Flow Visualization and Image Processing
Location: Honolulu, HI
Country: United States
Start Date: February 23, 1997
End Date: February 26, 1997
Sponsors: Pacific Centre of Thermal Fluids Engineering
Accession Number
97N19786
Funding Number(s)
PROJECT: RTOP 233-1B-1B
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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