Flow visualisation in inclined louvered fins

C. T'Joen, A. Jacobi, M. De Paepe

Research output: Contribution to journalArticlepeer-review


In this study the flow within an interrupted fin design, the inclined louvered fin, is investigated experimentally through visualisation. The inclined louvered fin is a hybrid of the offset strip fin and standard louvered fin, aimed at improved performance at low Reynolds numbers for compact heat exchangers. The flow behaviour is studied in six geometrically different configurations over a range of Reynolds numbers and quantified using the concept of 'fin angle alignment factor'. The transition from steady laminar to unsteady flow was studied in detail. The fin geometry had a very large impact on the transitional flow behaviour, especially on vortex shedding.

Original languageEnglish (US)
Pages (from-to)664-674
Number of pages11
JournalExperimental Thermal and Fluid Science
Issue number4
StatePublished - Apr 2009


  • Flow visualisation
  • Inclined louvered fins

ASJC Scopus subject areas

  • General Chemical Engineering
  • Nuclear Energy and Engineering
  • Aerospace Engineering
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes


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