functionBiasi_quality
Information
Prediction of the critical heat flux using the EPRI correlation as presented in 1982 EPRI Parametric Study of CHF Data Vol. 1-3
"Outputs"
CHF_EPRI => Critical heat flux predicted by EPRI [kW/m^2]
CHF_EPRI_Avg => Average heat flux based on total heater power [kW/m^2]
L_EPRI => Location of CHF event [m]
x_EPRI_local => quality at location of predicted CHF [-]
"Inputs"
G => mass flux per subchannel [kg/m^2s]
A_heated => total heated area per heater element [m^2]
A_test => flow area per subchannel [m^2]
L_heated => heated length per heater element [m]
x_in => inlet quality [-]
h_fg => latent heat of vaporization [J/kg]
Pr => reduced pressure [-]
K_g => grid spacer pressure loss coefficient [-]. Set default K_g = 1.
cwall toggels cold wall effect correction factor -> 1/0 = on/off
nu toggels nonuniform heat flux effect correction factor -> 1/0 = on/off
toggle_vis => toggle visibility of the convergence plot. 'on'/'off'
Inputs
| Type | Name | Default | Description |
|---|---|---|---|
| SIadd.MassFlux | G | Mass flux | |
| SI.Pressure | p | Pressure | |
| SI.Length | L_B | Length of pipe in two phase region (boiling length) | |
| SI.Length | D_htd | Heated diameter | |
| SI.SpecificEnthalpy | h_lv | Latent heat of vaporization | |
| SI.Length | perimeter | Modelica.Constants.pi*D_htd | Wetted perimeter |
| SI.Length | perimeter_htd | Modelica.Constants.pi*D_htd | Heated perimeter |
| SIadd.NonDim | R_f | 1 | Radial peaking factor |
Outputs
| Type | Name | Default | Description |
|---|---|---|---|
| SI.HeatFlux | x_CHF | Critical heat flux prediction |