Prediction of minimum spouting velocity by CFD-TFM: Approach development

Xuejiao Liu, Yingjuan Shao, Wenqi Zhong, John R. Grace, Norman Epstein, Baosheng Jin

Research output: Contribution to journalArticleResearchpeer-review

12 Citations (Scopus)

Abstract

A three-dimensional (3D) Eulerian-Eulerian multiphase model (two-fluid model, TFM) was developed to predict the minimum spouting velocity (ums) of spouted beds, with the aid of UBC experiments in a 152-mm conical-cylindrical vessel. The gas motion was simulated by the k-ε two-equation turbulent model, while the particle phase motion was estimated from the kinetic theory of granular flow. The inlet minimum spouting velocity, ums, was numerically predicted by visual observations and analysis of simulated distributions of the solid volume fraction and particle vector field for decreasing gas flow. The effects of particle diameter, static bed height and fluid inlet diameter on ums were checked, in order to confirm the validity of the present developed method. In addition, numerical predictions are compared with the predicted values from several empirical correlations reported in the open literature. Best congruence is with the popular Mathur-Gishler equation.

Original languageEnglish
Pages (from-to)1800-1808
Number of pages9
JournalCanadian Journal of Chemical Engineering
Volume91
Issue number11
DOIs
Publication statusPublished - Nov 2013
Externally publishedYes

Keywords

  • Spouted bed
  • Gas-solid flow
  • Eulerian multiphase model
  • Minimum spouting velocity

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