modelConstant_Nus
Constant Nusselt number
Extends from TRANSFORM.Fluid.Pipes_Obsolete.ClosureModels.HeatTransfer.Models.PartialHeatTransfer_setQ_flows (Base model required to allow for models that set Q_flows state rather than temperature state).
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| SI.Acceleration | g (from PartialHeatTransfer_setT) | Modelica.Constants.g_n | Gravitational acceleration |
| Internal Interface › Geometry | |||
| Real | nParallel (from PartialHeatTransfer_setT) | Number of parallel heat transfer segments | |
| Integer | nHT (from PartialHeatTransfer_setT) | geometry.nNodes | Number of serial heat transfer segments |
| Internal Interface › Inputs | |||
| Boolean | use_Dimensions (from PartialHeatTransfer_setT) | geometry.use_Dimensions | = true to specify characteristic dimension |
| Internal Interface › Nominal Conditions: | |||
| SI.MassFlowRate | m_flow_nominal (from PartialHeatTransfer_setT) | 1 | Mass flow rate |
| SI.Pressure | p_nominal (from PartialHeatTransfer_setT) | Medium.p_default | Pressure |
| Boolean | use_T_nominal (from PartialHeatTransfer_setT) | true | = true then use temperature else enthalpy |
| SI.Temperature | T_nominal (from PartialHeatTransfer_setT) | if use_T_nominal then Medium.T_default else Medium.temperature_phX(p_nominal, h_nominal, X_nominal) | Temperature |
| SI.SpecificEnthalpy | h_nominal (from PartialHeatTransfer_setT) | if use_T_nominal then Medium.specificEnthalpy_pTX(p_nominal, T_nominal, X_nominal) else Medium.h_default | Specific Enthalpy |
| Medium.MassFraction[Medium.nX] | X_nominal (from PartialHeatTransfer_setT) | Medium.X_default | Mass fractions m_i/m |
| Heat Transfer Model: | |||
| SI.NusseltNumber | Nu0 | 7.54 | Constant Nusselt number |
| Boolean | use_DefaultDimension | true | =false to set characteristic dimension (alpha = Nu*lambda/dimension0) |
| SI.Length | dimension0 | 0 | Characteristic dimension |
| Boolean | use_LambdaState | true | =false to set thermal conductivity (alpha = Nu*lambda0/dimension) |
| SI.ThermalConductivity | lambda0 | 0 | Thermal conductivity |
Connectors
| Type | Name | Default | Description |
|---|---|---|---|
| HeatAndMassTransfer.Interfaces.HeatPort_Flow | heatPorts (from PartialHeatTransfer_setT) |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| Medium.ThermodynamicState | states (from PartialHeatTransfer_setT) | Thermodynamic state of fluid | |
| SI.MassFlowRate | m_flows (from PartialHeatTransfer_setT) | Mass flow rate | |
| Geometry | geometry (from PartialHeatTransfer_setT) | ||
| SI.Length | lengths (from PartialHeatTransfer_setT) | geometry.dlengths | Characteristic length of heat transfer segment |
| SI.Diameter | dimensions (from PartialHeatTransfer_setT) | geometry.dimensions | Characteristic dimension (e.g. hydraulic diameter) |
| SI.Area | crossAreas (from PartialHeatTransfer_setT) | geometry.crossAreas | Cross sectional area |
| SI.Length | perimeters (from PartialHeatTransfer_setT) | geometry.perimeters | Wetted perimeter |
| SI.Area | surfaceAreas (from PartialHeatTransfer_setT) | geometry.surfaceAreas_23 | Heat transfer area |
| SI.Temperature | Ts_fluid (from PartialHeatTransfer_setT) | Medium.temperature(states) | Fluid temperature |
| SI.Temperature | Ts_wall (from PartialHeatTransfer_setT) | heatPorts.T | Wall temperature |
| SI.Temperature | Ts_film (from PartialHeatTransfer_setT) | 0.5*(Ts_wall + Ts_fluid) | Film temperature |
| Medium.ThermodynamicState | states_film (from PartialHeatTransfer_setT) | Medium.setState_pTX(states.p, Ts_film, Medium.X_default) | Film state |
| SI.CoefficientOfHeatTransfer | alphas (from PartialHeatTransfer_setT) | Coefficient of heat transfer | |
| SI.HeatFlowRate | Q_flows (from PartialHeatTransfer_setT) | heatPorts.Q_flow | Heat flow rate |
| Media.BaseProperties1Phase | mediums1 (from PartialHeatTransfer_setT) | Bulk fluid properties | |
| Media.BaseProperties1Phase | mediums1_film (from PartialHeatTransfer_setT) | Film fluid properties | |
| SI.Length | Dims | Characteristic length | |
| SI.ThermalConductivity | lambdas | Thermal conductivity | |
| SI.NusseltNumber | Nus | Nusselt number |