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Numerical study on the flow behavior of near wall cluster in the circulating fluidized bed

  • Harbin Institute of Technology

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The flow behavior of near wall cluster has an important effect on the heat transfer and attrition of the circulating fluidized beds (CFBs). In this paper, the gas-solid two-phase flow in the riser of CFBs was simulated by means of Large Eddy Simulation (LES) and the direct simulation Monte Carlo (DSMC) method. A extended cluster identification method was used to investigate the cluster properties. The distributions of time-averaged solid concentration and velocity of cluster near the wall region were analyzed. Simulated results showed that the descent velocity of near wall clusters appears to keep constant. The solid concentration of near wall cluster decreases along the height of riser. The simulated results have a reasonable agreement with the previous experimental data.

Original languageEnglish
Title of host publication2009 Asia-Pacific Power and Energy Engineering Conference, APPEEC 2009 - Proceedings
DOIs
StatePublished - 2009
Event2009 Asia-Pacific Power and Energy Engineering Conference, APPEEC 2009 - Wuhan, China
Duration: 27 Mar 200931 Mar 2009

Publication series

NameAsia-Pacific Power and Energy Engineering Conference, APPEEC
ISSN (Print)2157-4839
ISSN (Electronic)2157-4847

Conference

Conference2009 Asia-Pacific Power and Energy Engineering Conference, APPEEC 2009
Country/TerritoryChina
CityWuhan
Period27/03/0931/03/09

Keywords

  • CFBs
  • Cluster
  • DSMC method
  • LES
  • Near wall region

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