.TRANSFORM.HeatAndMassTransfer.ClosureRelations.HeatTransfer.Functions.TwoPhase.NucleateBoiling.alpha_Chen_TubeFlow

Information

Chen's correlation for the computation of the heat transfer coefficient in two-phase flows.

Interface

function alpha_Chen_TubeFlow
  import TRANSFORM;
  input SI.Length D "Characteristic dimension (e.g., hydraulic diameter)";
  input TRANSFORM.Units.MassFlux G "Mass flux";
  input TRANSFORM.Units.NonDim x(min = 0.0, max = 1.0) "Absolute Steam quality";
  input SI.Density rho_fsat "Saturated liquid density";
  input SI.DynamicViscosity mu_fsat "Liquid dynamic viscosity";
  input SI.ThermalConductivity lambda_fsat "Liquid thermal conductivity";
  input SI.SpecificHeatCapacity cp_fsat "Liquid constant pressure heat capacity";
  input SI.SurfaceTension sigma "Surface Tension";
  input SI.Density rho_gsat "Vapour density";
  input SI.DynamicViscosity mu_gsat "Vapour dynamic viscosity";
  input SI.SpecificEnthalpy h_fg "Latent heat of vaporization";
  input SI.TemperatureDifference Delta_Tsat "Saturation temperature difference (Twall-Tsat)";
  input SI.PressureDifference Delta_psat "Saturation pressure difference (psat(Twall)-psat(Tsat))";
  output SI.CoefficientOfHeatTransfer alpha "Two-phase total heat transfer coefficient";
  output Real X_tt_inv "Inverse of the Martenelli Parameter";
  output Real F "Correction factor for two-phase impact on liquid-phase convection";
  output Real S "Nucleare boiling suppresion factor";
  output Real Re_tp "Two-phase Reynolds number";
end alpha_Chen_TubeFlow;