modelRocha
correlation from Rocha
Extends from ThermalSeparation.Holdup.StructuredPackedColumn.BaseHoldup.
Information
The correlation was taken from [1].
References:
[1] Rocha, Bravo, Fair: Distillation Columns Containing Structured Packings: A Comprehensive Model for Their Performance 1. Hydraulic Models, Ind. Eng. Chem. Res., 1993, 32, 641-651
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Integer | n (from BaseHoldup) | ||
| Boolean | hu_stat_const | true | true, if a constant value for static holdup is to be used |
| Real | hu_stat_user | 0.02 | |
| Real | scf_stat | 0.01 | surface correction factor, depending on package surface |
| Real | frickel_dyn | 1 | factor to correct the dynamic holdup |
| Boolean | use_rho_l_nom | true | |
| Boolean | use_rho_v_nom | true | |
| Boolean | use_sigma_nom | true | |
| Boolean | use_eta_nom | true | |
| SI.Density | rho_l_nom | 1100 | |
| SI.Density | rho_v_nom | 1.2 | |
| Real | sigma_nom | 0.072 | |
| SI.DynamicViscosity | eta_nom | 1e-3 |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| MediumLiquid.ThermodynamicProperties[n] | propsLiq (from BaseHoldup) | ||
| MediumVapour.ThermodynamicProperties[n] | propsVap (from BaseHoldup) | ||
| SI.Pressure[n + 1] | p_v (from BaseHoldup) | ||
| Real[n] | eps_liq (from BaseHoldup) | ||
| Real[n] | hu_stat (from BaseHoldup) | ||
| SI.VolumeFlowRate[n] | Vdot (from BaseHoldup) | ||
| Real[n] | hu_dyn (from BaseHoldup) | ||
| Geometry | geometry (from BaseHoldup) | ||
| SI.Density[n] | rho_l | if use_rho_l_nom then fill(rho_l_nom, n) else rho | |
| SI.Density[n] | rho_v2 | if use_rho_v_nom then fill(rho_v_nom, n) else rho_v | |
| Real[n] | sigma_l | if use_sigma_nom then fill(sigma_nom, n) else sigma | |
| SI.DynamicViscosity[n] | eta_l | if use_eta_nom then fill(eta_nom, n) else eta |