modelPressureLossBasePackedBed
Base model for pressure loss in packed beds
Extends from ClaRa.Basics.Icons.Delta_p.
Information
1. Purpose of model
basic model for pressure loss in packed beds
2. Level of detail, physical effects considered, and physical insight
(Description)
3. Limits of validity
(Description)
4. Interfaces
(none)
5. Nomenclature
(no elements)
6. Governing Equations
(no equations)
7. Remarks for Usage
(none)
8. Validation
(no validation or testing necessary)
9. References
(none)
10. Version History
Model created by Michael von der Heyde (heyde@tuhh.de) for the FES research project, March 2021
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| SI.Pressure | Delta_p_smooth | iCom.Delta_p_nom/iCom.N_cv*0.2 | |Small Mass Flows|For pressure losses below this value the square root of the quadratic pressure loss model is regularised |
| ClaRa.Basics.Units.Length[iCom.N_cv] | Delta_x | geo.Delta_x | |
| ClaRa.Basics.Units.Length[iCom.N_cv + 1] | Delta_x_FM | geo.Delta_x_FM | flowModel grid |
| ClaRa.Basics.Units.MassFlowRate | m_flow_nom | iCom.m_flow_nom | Nominal mass flow rate |
| ClaRa.Basics.Units.PressureDifference | Delta_p_nom | iCom.Delta_p_nom | Nominal pressure loss wrt. all parallel tubes |
| ClaRa.Basics.Units.Area | A_cross_bed_FM | geo.A_cross_bed_FM | Cross Area of Packed Bed |
| Boolean | frictionAtInlet | ||
| Boolean | frictionAtOutlet | ||
| Boolean | useHomotopy |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| TILMedia.Gas_ph[iCom.N_cv] | fluid | ||
| TILMedia.Gas_ph | fluidInlet | ||
| TILMedia.Gas_ph | fluidOutlet | ||
| TransiEnt.Storage.Heat.PackedBedStorage_L4.Basics.Records.IComPackedBedControlVolume_L4 | iCom | ||
| TransiEnt.Storage.Heat.PackedBedStorage_L4.Basics.PackedBedGeometry.PackedBedGeometry_N_cv | geo | ||
| ClaRa.Basics.Units.PressureDifference[iCom.N_cv + 1] | Delta_p | Pressure difference | |
| ClaRa.Basics.Units.MassFlowRate[iCom.N_cv + 1] | m_flow | Massflow in FlowModel cells | |
| SI.PressureDifference[geo.N_cv + 1] | dp_pb_V | Part of Pressure Difference caused by Viscosity | |
| SI.PressureDifference[geo.N_cv + 1] | dp_pb_I | Part of Pressure Difference caused by Inertia | |
| SI.DensityMassSpecific[iCom.N_cv + 1] | rho_FM | Density in FlowModel cells | |
| SI.Velocity[geo.N_cv + 1] | v_FM | Superficial Velocity at cell boundary | |
| SI.DynamicViscosity[geo.N_cv + 1] | eta_FM | Dynamic Viscosity at cell boundary | |
| Real[geo.N_cv + 1] | Re | Reynolds Number |