Room Airflows with Low Reynolds Number Effects

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Abstract

The behaviour of room airflows under fully turbulent conditions is well known both in terms of experiments and, numerical calculations by computational fluid dynamics (CFD). For room airflows where turbulence is not fully developed though, i.e. flows at low Reynolds numbers, the existing knowledge is limited.
It has been the objective to investigate the behaviour of a plane isothermal wall jet in a full-scale ventilated room at low Reynolds numbers, i.e. when the flow is not fully turbulent. The results are significantly different from known theory for fully turbulent flows. It was found that the jet constants are a strong function of the Reynolds number up to a level of Reh≈500.

Original languageEnglish
Place of PublicationAalborg
PublisherDept. of Building Technology and Structural Engineering, Aalborg University
Number of pages6
Publication statusPublished - 2000
SeriesIndoor Environmental Engineering
Number107
VolumeR0030
ISSN1395-7953

Bibliographical note

Proceedings of ROOMVENT 2000, 7th International Conference on Air Distribution in Rooms, Reading, United Kingdom, 2000, pp. 541-546

PDF for print: 12 pp.

Keywords

  • Ventilation
  • Room Airflow
  • Low Reynolds Number Effect

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