.TAeZoSysPro.HeatTransfer.Functions.FreeConvection.horizontal_cylinder_ASHRAE

Information

The following Churchill and Chu correlation is applicable for an horizontal cylinder in rest environment (no forced convection).
The formula is picked from the ASHRAE guide chapter 3 table 10 equation T10.10

The correlation is given for a Rayleigh number 10⁹ < Ra < 10¹³.

Where :

• Nu is the Nusselt number
• Ra is the Rayleigh number
• Pr is the Prandtl number

Interface

function horizontal_cylinder_ASHRAE
  extends Modelica.Icons.Function;
  input Modelica.SIunits.PrandtlNumber Pr;
  input Modelica.SIunits.RayleighNumber Ra;
  output Modelica.SIunits.NusseltNumber Nu;
end horizontal_cylinder_ASHRAE;