modelNominalLinear
linear pressure drop with nominal values
Extends from ThermalSeparation.PressureLoss.RandomPackedColumn.BasicPressureLossPacked (basic pressure loss model for a plate column).
Information
Pressure loss model of the form:
delta_p = K*Vdot, where K is constant. K is determined from the nominal volume flow rate and the nominal pressure drop of the column.
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Integer | n (from BasicPressureLoss) | 8 | |
| SI.Pressure | deltaP_nom | 0.05e5 | nominal pressure drop |
| SI.VolumeFlowRate | Vdot_nom | 0.4 | nominal volume flow rate |
| Real | K | (deltaP_nom/Vdot_nom)/n | |
| Use of nominal values | |||
| Boolean | rho_const (from BasicPressureLoss) | false | rho is set constant (rho = rho_nom) for calculation of k |
| SI.Density | rho_l_nom (from BasicPressureLoss) | 1000 | |
| SI.Density | rho_v_nom (from BasicPressureLoss) | 1 | |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| MediumLiquid.ThermodynamicProperties[n] | propsLiq (from BasicPressureLoss) | ||
| MediumVapour.ThermodynamicProperties[n] | propsVap (from BasicPressureLoss) | ||
| SI.VolumeFlowRate[n] | Vdot_l (from BasicPressureLoss) | ||
| SI.Pressure[n + 1] | p (from BasicPressureLoss) | ||
| SI.VolumeFlowRate | Vdot_in (from BasicPressureLoss) | ||
| Real[n] | eps_liq (from BasicPressureLoss) | ||
| SI.VolumeFlowRate[n] | Vdot (from BasicPressureLoss) | ||
| SI.Pressure | p_v_in (from BasicPressureLoss) | ||
| HomotopyMethod | homotopyMethod (from BasicPressureLoss) | ||
| Geometry | geometry (from BasicPressureLossPacked) | ||
| Real[n] | hu_dyn (from BasicPressureLossPacked) | dynamic holdup | |
| SI.ReynoldsNumber[n] | Re | ||
| SI.WeberNumber[n] | We | ||
| SI.FroudeNumber[n] | Fr | ||
| SI.Velocity[n] | w_eff_l | effective liquid velocity | |
| SI.Velocity[n] | w_sup_l | Vdot_l/geometry.A | superficial liquid velocity |
| SI.Velocity[n] | w_sup_v | Vdot/geometry.A | |
| Real[n] | Ft | ||
| SI.DynamicViscosity[n] | eta_v | propsVap.eta | |
| SI.DynamicViscosity[n] | eta_l | propsLiq.eta | |
| Real | sin_theta | Modelica.Math.sin(geometry.theta*2*Modelica.Constants.pi/360) |
Revisions
Documentation last revised: 18.7.2011