Measurements on Buoyant Jet Flows from a Ceiling-Mounted Slot Diffuser

Peter V. Nielsen, Åke T. A. Möller

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Ceiling-mounted slot diffusers in ventilated rooms will often generate a flow of the wall jet type. The jet follows the ceiling, entrains air from the occupied zone and generates a recirculating flow in the whole room.

This paper will deal with the flow in the ceiling region. The wall jet flow is especially influenced by diffuser design and surrounding details such as distance to the ceiling and the ceiling structure. The flow is less influenced by other parameters in the room such as length, width, height and furnishings.
Original languageEnglish
Place of PublicationAalborg
PublisherDept. of Building Technology and Structural Engineering, Aalborg University
Number of pages11
Publication statusPublished - 1988
SeriesIndoor Environmental Technology

Bibliographical note

Presented at the 3rd Seminar on "Application of Fluid Mechanics in Environmental Protection-88", Silesian Technical University, Gliwice, Poland

PDF for print: 18 pp.


  • Aircondition
  • Buoyant Jet Flow
  • Ceiling-Mounted Slot Diffuser

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