Forced Heat Transfer Check
Accessory component to check the heat transfer coefficient of forced convection
The Forced Heat Transfer Check component models the heat transfer coefficient calculation of forced convection.
Before using HeatConvection component, you can check how to calculate the heat transfer coefficient internally.
Average temperature is:
Heat transfer coefficient of forced convection is calculated with:
h=`HeatTransfer.Properties.Fluid.AirForcedlHeatTransferpin, Tin1,Tin2, Vin,Convection Type, true, 1,1,1,1
( h=Nu⋅kX )
And, Nusselt number Nu is calculated with the following equation which is selected by the option.
Default : Use references for Forced = false
If you select this option, the generalized equation is valid.
( Re and Pr and k is calculated from pin and T )
The default value of the experimental parameters are for the flat plate with the laminar flow.
Reference "Tube and Duct" : Use references for Forced = true and Forced Convection type = Tube and Duct
For laminar flow, the constant Nusselt number is used in this option, and for turbulent, Dittus-Boetter's equation  is used.
Reference "Over flat plates (Laminar)" : Use references for Forced = true and Forced Convection type = Over flat plates
Reference "Over a cylinder" : Use references for Forced = true and Forced Convection type = Over a cylinder
This equation is given by Churchill and Bernstein , which is valid for the range 102<Re<107, Re⋅Pr>0.2.
Reference "Over a sphere" : Use references for Forced = true and Forced Convection type = Over a sphere
This equation is developed by Whitaker , which is valid for the range 3.5<Re<8⋅104, 0.7<Pr<380.
For information on the calculation of Fluid properties, see Fluid Properties Check.
 : Dittus, F. W. and L. M. K. Boelter, Univ. Calif. (Berkeley) Pub. Eng. vol. 2, p.443, 1930.
 : Churchill, S. W., and M. Bernstein. "A Correlating Equation for Forced Convection from Gases and Liquids to a Circular Cylinder in Crossflow", J. Heat Transfer, vol.99, pp.300-306, 1977.
 : Whitake, S. "Forced Convection Heat-Transfer Correlations for Flow in Pipes, Past Flat Plates, Single Cylinders, Single Spheres, and Flow in Packed Bids and Tube Bundles", AIChE J., vol.18 p361, 1972.
Averaged temperature between Tin and Tin
Heat transfer coefficient
Viscosity calculated with temperature of solid port
Viscosity calculated with temperature of fluid port
Heat transfer coefficient of Forced convection
Use reference for Forced
If true, all parameters are defined by references.
Forced Convection Type
Tube and Duct
Geometry type of forced convection as references
Gain parameter for Reynolds number in the generalized experimental equation of Forced convection generalized equation.
Exponent parameter for Reynolds number in the generalized experimental equation of Forced convection generalized equation.
Offset parameter for Reynolds number in the generalized experimental equation of Forced convection generalized equation.
Exponent parameter for Prandtl number in the generalized experimental equation of Forced convection generalized equation.
Initial condition of the averaged temperature
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