Experiment and simulation of the recirculation flow in a CVD reactor for monolithic materials

S. C. Gong, R. G. Liu, F. C. Chou, A. S.T. Chiang

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

The length of the recirculation zone (reattachment length) of a central jet flowing into an enlarged chamber is studied both experimentally and theoretically. Unlike conventional studies of flow over a backward-facing step or abrupt circular channel expansion flows, the expansion ratio in this study is much greater than 2. This is the condition observed in the CVD reactor for producing bulk monolithic materials. A correlation equation is found to predict the length of the recirculation zone when the expansion ratio is greater than 2. This correlation equation has been confirmed by the present experimental data with an expansion ratio of 15.3 and agrees with the existing data for an expansion ratio of 2.6.

Original languageEnglish
Pages (from-to)45-51
Number of pages7
JournalExperimental Thermal and Fluid Science
Volume12
Issue number1
DOIs
StatePublished - Jan 1996

Keywords

  • CVD reactor
  • Flow visualization
  • High expansion ratio
  • Reattachment length

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