modelMoistureSeparator
Extends from BaseClasses.PartialSimpleVolume.
Information
Model updated to avoid breakdowns in situations where x_abs > eta_sep in previous model.
Model based on the equations m_steam_in + m_steam_out + m_liq = dm/dt = 0 at steady state and m_steam_in*h_steam_in + m_steam_out*h_steam_out + m_liq*h_liq = m*du/dt = 0 at steady state.
Eta_sep is now defined as the fraction of liquid present removed by the moisture separator. Given this definition and h_liq = h_f, the expression for h_steam_out is found based on current moisture separator properties and the mass flow rate of liquid.
The system tends towards equilibrium at x_abs = (h_steam_in - h_f)/(h_g-h_f).
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Advanced › Dynamics | |||
| Dynamics | energyDynamics (from PartialVolume) | Dynamics.DynamicFreeInitial | Formulation of energy balances |
| Dynamics | massDynamics (from PartialVolume) | energyDynamics | Formulation of mass balances |
| Dynamics | substanceDynamics (from PartialVolume) | massDynamics | Formulation of substance balances |
| Dynamics | traceDynamics (from PartialVolume) | massDynamics | Formulation of trace substance balances |
| Initialization › Start Value: Absolute Pressure | |||
| SI.AbsolutePressure | p_start (from PartialVolume) | Medium.p_default | Pressure |
| Initialization › Start Value: Temperature | |||
| Boolean | use_T_start (from PartialVolume) | true | Use T_start if true, otherwise h_start |
| SI.Temperature | T_start (from PartialVolume) | Medium.T_default | Temperature |
| Initialization › Start Value: Specific Enthalpy | |||
| SI.SpecificEnthalpy | h_start (from PartialVolume) | Medium.specificEnthalpy_pTX(p_start, T_start, X_start) | Specific enthalpy |
| Initialization › Start Value: Species Mass Fraction | |||
| SI.MassFraction[Medium.nX] | X_start (from PartialVolume) | Medium.X_default | Mass fraction |
| Initialization › Start Value: Trace Substances | |||
| SIadd.ExtraProperty[Medium.nC] | C_start (from PartialVolume) | fill(0, Medium.nC) | Mass-Specific value |
| Visualization | |||
| Boolean | showName (from PartialVolume) | true | |
| Visualization › Color Coding | |||
| Boolean | showColors (from IconColorMap) | false | Toggle dynamic color display |
| Integer | n_colors (from IconColorMap) | 64 | Number of colors in the colorMap, multiples of 4 is best |
| Advanced › Heat Transfer | |||
| Boolean | use_HeatPort (from PartialSimpleVolume) | false | =true to toggle heat port |
| Advanced › Trace Mass Transfer | |||
| Boolean | use_TraceMassPort (from PartialSimpleVolume) | false | =true to toggle trace mass port |
| SI.MolarMass[Medium.nC] | MMs (from PartialSimpleVolume) | fill(1, Medium.nC) | Trace substances molar mass |
Connectors
| Type | Name | Default | Description |
|---|---|---|---|
| Interfaces.FluidPort_State | port_a (from PartialSimpleVolume) | ||
| Interfaces.FluidPort_State | port_b (from PartialSimpleVolume) | ||
| HeatAndMassTransfer.Interfaces.HeatPort_State | heatPort (from PartialSimpleVolume) | ||
| HeatAndMassTransfer.Interfaces.MolePort_State | traceMassPort (from PartialSimpleVolume) | ||
| Interfaces.FluidPort_Flow | port_Liquid |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| TRANSFORM.Fluid.SystemTF | systemTF (from PartialVolume) | ||
| SI.Volume | V (from PartialVolume) | Volume | |
| Medium.BaseProperties | medium (from PartialVolume) | ||
| SI.Mass | m (from PartialVolume) | Mass | |
| SI.InternalEnergy | U (from PartialVolume) | Internal energy | |
| SI.Mass[Medium.nXi] | mXi (from PartialVolume) | Species mass | |
| SIadd.ExtraPropertyExtrinsic[Medium.nC] | mC (from PartialVolume) | Trace substance extrinsic value | |
| SIadd.ExtraPropertyExtrinsic | mC_scaled (from PartialVolume) | Scaled trace substance for improved numerical stability | |
| SIadd.ExtraProperty[Medium.nC] | C (from PartialVolume) | Trace substance mass-specific value | |
| SI.MassFlowRate | mb (from PartialVolume) | 0 | Mass flow rate source/sinks within volumes |
| SI.HeatFlowRate | Ub (from PartialVolume) | 0 | Energy source/sinks within volumes (e.g., ohmic heating, external convection) |
| SI.MassFlowRate[Medium.nXi] | mXib (from PartialVolume) | zeros(Medium.nXi) | Species mass flow rates source/sinks within volumes |
| SIadd.ExtraPropertyFlowRate[Medium.nC] | mCb (from PartialVolume) | zeros(Medium.nC) | Trace flow rate source/sinks within volumes (e.g., chemical reactions, external convection) |
| Real | val (from IconColorMap) | Color map input variable | |
| Real | val_min (from IconColorMap) | val <= val_min is mapped to colorMap[1,:] | |
| Real | val_max (from IconColorMap) | val >= val_max is mapped to colorMap[end,:] | |
| Real[3] | dynColor (from IconColorMap) | Modelica.Mechanics.MultiBody.Visualizers.Colors.scalarToColor(val, val_min, val_max, colorMapData_) | |
| Geometry | geometry (from PartialSimpleVolume) | ||
| SI.Acceleration | g_n (from PartialSimpleVolume) | Modelica.Constants.g_n | Gravitational acceleration |
| SI.HeatFlowRate | Q_gen (from PartialSimpleVolume) | 0 | Internal heat generation |
| SIadd.ExtraPropertyFlowRate[Medium.nC] | mC_gen (from PartialSimpleVolume) | fill(0, Medium.nC) | Internal trace mass generation |
| SI.Efficiency | eta_sep | 1.0 | Separation efficiency |
| SI.MassFlowRate | m_cond | ||
| SI.MassFraction | x_abs | ||
| SI.Pressure | p_crit | Medium.fluidConstants[1].criticalPressure | |
| SI.SpecificEnthalpy | h_lsat | ||
| SI.SpecificEnthalpy | h_vsat | ||
| SI.SpecificEnthalpy | enthalpy_usedfor_inlet |
Revisions
2020-04 | Daniel Mikkelson (dmmikkel@ncsu.edu, daniel.mikkelson@inl.gov)