Convection From a Slender Cylender in a Ventilated Room

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Abstrakt

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.
OriginalsprogEngelsk
TitelROOMVENT '90, International Conference on Engineering Aero- and Thermodynamics of Ventilated Rooms, Oslo, June 1990
Antal sider20
UdgivelsesstedOslo
ForlagOtto Falch Hurtigtrykk
Publikationsdato1990
Artikelnummer34
KapitelB2
StatusUdgivet - 1990
BegivenhedRoomvent´90: engineering Aero-And Thermodynamics of Ventilated Room - Oslo, Norge
Varighed: 13 jun. 199015 jun. 1990
Konferencens nummer: 2

Konference

KonferenceRoomvent´90
Nummer2
LandNorge
ByOslo
Periode13/06/199015/06/1990

Emneord

  • Natural Convection
  • Displacement Ventilation
  • Concentration Distribution

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