modelBoundaryVLE_Txim_flow
Extends from TransiEnt.Basics.Icons.BoundaryVLE_flow.
Information
Purpose of model
This model is a boundary for a vapor-liquid-equilibrium defining the temperature, the mass composition and the mass flow rate. It contains a fluid port that is used as an outlet/inlet for the fluid and a fluid model from the TIL media that is used to determin the state variables and fluid properties. The user can chose if the mass flow rate, the temperature or the mass fraction should be constant or set with an input. It is a purely technical component without physical modeling.
Interfaces
RealInput: mass flow rate in [kg/s]
RealInput: temperature in [K]
RealInput: mass fraction in [kg/kg]
FluidPortOut
Validation
Tested in check model "TransiEnt.Components.Boundaries.FluidFlow.Check.TestBoundaryVLE_Txim_flow"
Version History
The model was documented by Jan Westphal (j.westphal@tuhh.de) in August 2025
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Fundamental Definitions | |||
| TILMedia.VLEFluidTypes.BaseVLEFluid | medium | simCenter.fluid1 | Medium to be used |
| Define Variable Boundaries | |||
| Boolean | variable_m_flow | true | True, if mass flow defined by variable input |
| Boolean | variable_T | false | True, if temperature defined by variable input |
| Boolean | variable_xi | false | True, if composition defined by variable input |
| Boolean | changeSign | true | Change sign of mass flow input (True, m_flow<0 leaves boundary) |
Connectors
| Type | Name | Default | Description |
|---|---|---|---|
| Basics.Interfaces.Thermal.FluidPortOut | fluidPortOut | ||
| TransiEnt.Basics.Interfaces.General.MassFlowRateIn | m_flow | m_flow_in | Variable mass flow rate |
| TransiEnt.Basics.Interfaces.General.TemperatureIn | T | T_in | Variable temperature in K |
| TransiEnt.Basics.Interfaces.General.MassFractionIn[medium.nc - 1] | xi | xi_in | Variable mass composition |
| ClaRa.Basics.Interfaces.EyeOut | eye |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| TransiEnt.SimCenter | simCenter | ||
| ClaRa.Components.BoundaryConditions.BoundaryVLE_Txim_flow | boundaryConditions | Click book icon to change boundary conditions | |
| Modelica.Blocks.Math.Gain | sign |