Three-dimensional LDA measurements in the impeller region of a turbulently stirred tank

JJ Derksen*, MS Doelman, HEA Van den Akker

*Corresponding author for this work

Research output: Contribution to journalArticle

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Abstract

Three-dimensional, angle-resolved LDA measurements of the turbulent flow field (Re =2.9 x 10(4)) in the vicinity of a Rushton turbine in a baffled mixing tank have been performed. For this goal, a procedure for accurate beam alignment, based on a submerged micro-mirror system, has been developed. Results on the average flow field as well as on the complete set of Reynolds stresses are presented. The anisotropy of the turbulence has been characterized by the invariants of the anisotropy tensor. The trailing vortex structure, which is characteristic for the flow induced by a Rushton turbine, is demonstrated to be associated with strong, anisotropic turbulent activity.

Original languageEnglish
Pages (from-to)522-532
Number of pages11
JournalExperiments in Fluids
Volume27
Issue number6
Publication statusPublished - Nov 1999

Keywords

  • RUSHTON TURBINE
  • FLOW
  • SIMULATION
  • REACTORS
  • STREAM
  • FIELD

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