Abstract

The Influence of Solid-Phase Wall Boundary Condition in Terms of Specularity Coefficient and Particle-Wall Restitution Coefficient on the Flow Behavior of Spouted Beds Was Investigated using Two-Fluid Model Approach in the Computational Fluid Dynamics Software FLUENT 6.3. Parametric Studies of Specularity Coefficient and Particle-Wall Restitution Coefficient Were Performed to Evaluate their Effects on the Flow Hydrodynamics in Terms of Fountain Height, Spout Diameter, Pressure Drop, Local Voidage and Particles Velocity. the Numerical Predictions Were Compared with Available Experimental Data in the Literatures to Obtain the Suitable Values of Specularity Coefficient and Particle-Wall Restitution Coefficient for Spouted Beds. the Simulated Results Show that the Solid-Phase Wall Boundary Condition Plays an Important Role in CFD Modeling of Spouted Beds. the Specularity Coefficient Has a Pronounced Effect on the Spouting Behavior and a Small Specularity Coefficient (0.05) Can Give Good Predictions, While the Particle-Wall Restitution Coefficient is Not Critical for the Holistic Flow Characteristics. © 2011 Elsevier Ltd.

Department(s)

Chemical and Biochemical Engineering

Comments

China University of Petroleum, Beijing, Grant None

Keywords and Phrases

Boundary condition; Hydrodynamics; Numerical simulation; Particle-wall restitution coefficient; Specularity coefficient; Spouted beds

International Standard Serial Number (ISSN)

0009-2509

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2023 Elsevier, All rights reserved.

Publication Date

13 Feb 2012

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