PipeWithoutCapacity
Library
Components/Lines
Description
Pipe model with resistive and inductive properties.
The pressure drop calculation is based on the assumption of quasi-steady friction. For turbulent flow through hydraulically rough pipes, the relative surface roughness (relRoughness) is taken into account. Geodetic pressure offset due to height differences between the pipe ports is considered in the simulation. The height difference deltaH is measured as the vertical distance between port B and port A of the pipe.
The calculated inductance depends on the flow regime (laminar or turbulent). The laminar inductance exceeds the turbulent one by a factor of 4/3.
If the parameter flowInitialization is activated, the initial mass flow rate will be calculated based on the potential difference between the two ports. If the check mark is not set, the initial flow rate will be zero even if a potential difference is present.
Please note: almost in every case it is necessary to add volumes at both ports.
Parameters
| Name | Label | Description | Data Type | Valid Values |
|---|---|---|---|---|
mo_diameter | diameter | inner diameter | Scalar | |
mo_length | length | pipe length | Scalar | |
mo_deltaH | deltaH | height difference | Scalar | |
mo_relRoughness | relRoughness | inner surface relative roughness | Scalar | |
mo_area | area | Scalar | ||
mo_fricConstant | fricConstant | 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_reynoldsNo | reynoldsNo | reynoldsNo | Structure | |
mo_reynoldsNo/fixed | fixed | Cell of scalars | true | |
mo_reynoldsNo/start | start | Cell of scalars | ||
mo_lambda | lambda | lambda | Structure | |
mo_lambda/fixed | fixed | Cell of scalars | true | |
mo_lambda/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 |