modelBoundaryVLE_pTxi
Extends from TransiEnt.Basics.Icons.BoundaryVLE.
Information
Purpose of model
This model is a boundary for a vapor-liquid-equilibrium defining the pressure, the mass composition and the temperature. 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 pressure, 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: pressure in [Pa]
RealInput: temperature in [K]
RealInput: mass fraction in [kg/kg]
FluidPortIn
Validation
Tested in check model "TransiEnt.Components.Boundaries.FluidFlow.Check.TestBoundaryVLE_pTxi"
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_p | false | True, if pressure defined by variable input |
| Boolean | variable_T | false | True, if spc. enthalpy defined by variable input |
| Boolean | variable_xi | false | True, if composition defined by variable input |
Connectors
| Type | Name | Default | Description |
|---|---|---|---|
| TransiEnt.Basics.Interfaces.General.PressureIn | p | p_in | Variable absolute pressure |
| 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 |
| Basics.Interfaces.Thermal.FluidPortIn | fluidPortIn | ||
| ClaRa.Basics.Interfaces.EyeOut | eye |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| TransiEnt.SimCenter | simCenter | ||
| ClaRa.Components.BoundaryConditions.BoundaryVLE_pTxi | boundaryConditions | Click book icon to change boundary conditions |