.TAeZoSysPro.HeatTransfer.Functions.fviewFunction

Information

FviewFunction

This functions computes the view factor (or called form factor) from the input Areas and with the Carrol's method. To summarize, this method allows to calculate the value of the view factor without knowing the detailed geometry (civil work) but just with the knowing of the value of all the areas. The Carroll's method requires the following hypotheses:

The formula of the F_view factor derives to an heuristic relation:

Where :

This heuristic relation is solved iteratively. The convergence criteria (the value of tolerance) is performed on the residuals wich are defined as the norm between the difference vector Fview at iteration N and iteration N-1. The default value for the tolerance is 10-5.

The convergence is theorically guaranteed if the initial value for fview is 1.

Interface

function fviewFunction
  input Real[:] Awall;
  output Real[size(Awall, 1)] Fview;
end fviewFunction;

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