.AixLib.Fluid.MassExchangers.MembraneBasedEnthalpyExchangers.BaseClasses.Functions.NusseltNumberMuzychka

Information

This function calculates the Nusselt number for a rectangular duct according to Muzychka and Yovanovich [1].

The dimensionless length zStern as input has to be calculated as follows.

zStern = (s_duct ⁄ √A_{cross-section} ) ⁄ (Re Pr )

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

Interface

function NusseltNumberMuzychka
  input Real Re "Reynolds number";
  input Real Pr "Prandtl number";
  input Real aspRat "aspect ratio between duct height and width";
  input Real zStern "dimensionless length";
  input Boolean uniWalTem "true if uniform wall temperature boundary conditions";
  input Boolean local "true if local nusslet number or false if average shall be calculated";
  input Real gamma "shape parameter (rectangular duct: 0.1)";
  output Real Nu "Nusselt number";
end NusseltNumberMuzychka;

Revisions

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