.Buildings.HeatTransfer.Convection.Functions.HeatFlux.ceiling

Information

This function computes the buoyancy-driven convective heat flux as

q̇ = h ΔT,

where ΔT is the solid temperature minus the fluid temperature and h is the convective heat transfer coefficient for a ceiling, computed as

h=k |ΔT|^0.3333,

where k=1.51 if the fluid is warmer than the ceiling, or k=0.76 otherwise.

Interface

function ceiling
  extends Buildings.HeatTransfer.Convection.Functions.HeatFlux.BaseClasses.PartialHeatFlux;
end ceiling;

Revisions

• July 28, 2014, by Michael Wetter:
  Updated documentation.
• March 10 2010, by Michael Wetter:
  First implementation.