ExpansionContraction
Sudden Expansion / Contraction
Library
Components/Lines
Description
The component ExpansionContraction is a model of a cross section enlargement (diffusor) or a cross section reduction (nozzle). It depends on the flow direction.
The component computes the loss number zeta
according to the following equations:
Borda-Carnot Equation
Formulas are taken from E. Truckenbrodt, Fluidmechanik, Band 1: Grundlagen und elementare Strömungsvorgänge dichtebeständiger Fluide, 4. Auflage, 2008.
Parameters
| Name | Label | Description | Data Type | Valid Values |
|---|---|---|---|---|
mo_D1 | D1 | Diameter 1 | Scalar | |
mo_D2 | D2 | Diameter 2 | Scalar | |
mo_deadVolume | deadVolume | Dead volume at ports | Scalar |
| Name | Label | Description | Data Type | Valid Values |
|---|---|---|---|---|
mo_forwardFluidProperties | forwardFluidProperties | Forward fluid properties between ports | Scalar | true |
| Name | Label | Description | Data Type | Valid Values |
|---|---|---|---|---|
mo_volumeFlowA | volumeFlowA | volumeFlowA | Structure | |
mo_volumeFlowA/fixed | fixed | Cell of scalars | true | |
mo_volumeFlowA/start | start | Cell of scalars | ||
mo_volumeFlowB | volumeFlowB | volumeFlowB | Structure | |
mo_volumeFlowB/fixed | fixed | Cell of scalars | true | |
mo_volumeFlowB/start | start | Cell of scalars | ||
mo_pA | pA | pA | Structure | |
mo_pA/fixed | fixed | Cell of scalars | true | |
mo_pA/start | start | Cell of scalars | ||
mo_pB | pB | pB | Structure | |
mo_pB/fixed | fixed | Cell of scalars | true | |
mo_pB/start | start | Cell of scalars |
Ports
| Name | Type | Description | IO Type | Number |
|---|---|---|---|---|
fluidPortA | implicit | Hydraulic port A | input | 1 |
fluidPortB | implicit | Hydraulic port B | input | 2 |