.AixLib.Fluid.MassExchangers.MembraneBasedEnthalpyExchangers.BaseClasses.HeatTransfer.PartialDuctHeatTransfer

Information

This model calculates the convective heat transfer coefficient α using the nusselt number correlation for rectangular air ducts by Muzychka and Yovanovich [1] (see function NusseltNumberMuzychka).

The air density, dynamic viscosity, thermal conductivity and Prandtl number are calculated as state variables. The Reynolds number is calculated using the density, dynmaic viscosity, flow velocity and the duct's cross section as characteristic length. The cross section is calculated using the duct's height and width.

The convective heat transfer coefficient is calculated as follows.

α = (Nu λ ) ⁄ √A_{cross-section}

References

[1]: Muzychka, Y. S.; Yovanovich, M. M. : Laminar Forced Convection Heat Transfer in the Combined Entry Region of Non-Circular Ducts ; Transactions of the ASME; Vol. 126; February 2004

Revisions

• August 21, 2018, by Martin Kremer:
  First implementation.