Sensitivity Analysis and Validation of a Two Fluid Method (TFM) model for a Spouted Bed

Cristina Moliner, Filippo Marchelli (Corresponding Author), Laura Ong, Alfonso Martinez-Felipe, Dominic Van der A, Elisabetta Arato

Research output: Contribution to journalArticle

Abstract

A spouted bed has been simulated through a Computational Fluid Dynamic model using the Two Fluid Method and validated against experimental data. A sensitivity analysis has assessed the influence of the characteristic parameters on the solution. Among them, the accurate selection of the drag law seems to have the strongest influence on the results. In order to extend the capabilities of Ansys Fluent, Di Felice’s drag law was also considered through a User Defined Function. The assessment of the granular phase and its kinetic, collisional and frictional forces, is highly relevant to achieve a correct prediction of the particle velocity profile. The specularity coefficient appears to be more influencing than the restitution coefficient, but both parameters are useful to optimise the model. Overall, the prediction of the particle vertical velocity is accurate whereas the height of the fountain is slightly over-predicted.
Original languageEnglish
Pages (from-to)39-53
Number of pages15
JournalChemical Engineering Science
Volume207
Early online date7 Jun 2019
DOIs
Publication statusE-pub ahead of print - 7 Jun 2019

Fingerprint

Sensitivity analysis
Drag
Fountains
Fluids
Dynamic models
Computational fluid dynamics
Kinetics

Keywords

  • computational fluid dynamics
  • two fluid model
  • multiphase flows
  • granular materials
  • Ansys Fluent
  • Computational fluid dynamics
  • Granular materials
  • Two fluid model
  • Multiphase flows
  • PROFILES
  • FLOW PATTERNS
  • PARTICLE
  • EQUATIONS
  • HYDRODYNAMICS
  • SIMULATION
  • KINETIC-THEORY
  • SOLID FLOW
  • DYNAMICS
  • THERMAL EXPLOITATION

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Chemistry(all)
  • Industrial and Manufacturing Engineering

Cite this

Sensitivity Analysis and Validation of a Two Fluid Method (TFM) model for a Spouted Bed. / Moliner, Cristina; Marchelli, Filippo (Corresponding Author); Ong, Laura; Martinez-Felipe, Alfonso; Van der A, Dominic; Arato, Elisabetta.

In: Chemical Engineering Science, Vol. 207, 02.11.2019, p. 39-53.

Research output: Contribution to journalArticle

Moliner, Cristina ; Marchelli, Filippo ; Ong, Laura ; Martinez-Felipe, Alfonso ; Van der A, Dominic ; Arato, Elisabetta. / Sensitivity Analysis and Validation of a Two Fluid Method (TFM) model for a Spouted Bed. In: Chemical Engineering Science. 2019 ; Vol. 207. pp. 39-53.
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