Convection From a Slender Cylender in a Ventilated Room

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

Abstract

The equations, based on an integral formulation, for turbulent natural boundary layer flow are solved in both the constant temperature case and in the constant heat flux case. Solutions are found. for convection along both flat plates and cylinders. Theoretical predictions are compared with measurements in the boundary layer flow around a heated vertical slender cylinder in a full-scale test room with displacement ventilation. Both velocity and temperature profiles in the boundary layer flow were recorded.

The room was ventilated by a low velocity diffuser, standing on the floor, from which air with a negative buoyancy was supplied. The vertical distribution of both temperature and contamination in the room was measured as a function of the heat load and the air flow rate. The contaminant distribution showed a clear stratification between clean and contaminated air, while the temperature was increasing uniformly from floor to ceiling. It was found that the convective flow at the heat source as well as the flow at the walls was influencing the level of stratification.
Original languageEnglish
Title of host publicationROOMVENT '90, International Conference on Engineering Aero- and Thermodynamics of Ventilated Rooms, Oslo, June 1990
Number of pages20
Place of PublicationOslo
PublisherOtto Falch Hurtigtrykk
Publication date1990
Article number34
ChapterB2
Publication statusPublished - 1990
EventRoomvent´90: engineering Aero-And Thermodynamics of Ventilated Room - Oslo, Norway
Duration: 13 Jun 199015 Jun 1990
Conference number: 2

Conference

ConferenceRoomvent´90
Number2
CountryNorway
CityOslo
Period13/06/199015/06/1990

Keywords

  • Natural Convection
  • Displacement Ventilation
  • Concentration Distribution

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