modelAlphas
Specify Heat Transfer Coefficient
Extends from TRANSFORM.HeatAndMassTransfer.ClosureRelations.HeatTransfer.Models.PartialSinglePhase (Base model).
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Internal Interface | |||
| Integer | nHT (from PartialHeatTransfer) | 1 | Number of heat transfer segments |
| Integer | flagIdeal (from PartialHeatTransfer) | 0 | Flag for models to handle ideal heat transfer |
| Advanced | |||
| SI.ReynoldsNumber | Re_lam (from PartialHeatTransfer) | 2300 | Laminar transition Reynolds number |
| SI.ReynoldsNumber | Re_turb (from PartialHeatTransfer) | 4000 | Turbulent transition Reynolds number |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| Medium.ThermodynamicState[nHT] | states (from PartialHeatTransfer) | Thermodynamic state of fluid | |
| SI.Temperature[nHT] | Ts_wall (from PartialHeatTransfer) | Wall temperature | |
| SI.Temperature[nHT] | Ts_fluid (from PartialHeatTransfer) | Fluid temperature | |
| SI.Velocity[nHT] | vs (from PartialHeatTransfer) | Fluid Velocity | |
| SI.Diameter[nHT] | dimensions (from PartialHeatTransfer) | Characteristic dimension (e.g. hydraulic diameter) | |
| SI.Area[nHT] | crossAreas (from PartialHeatTransfer) | Cross sectional flow area | |
| SI.Length[nHT] | dlengths (from PartialHeatTransfer) | Characteristic length of heat transfer segment | |
| SI.Height[nHT] | roughnesses (from PartialHeatTransfer) | Average height of surface asperities | |
| SI.Temperature[nHT] | Ts_film (from PartialHeatTransfer) | 0.5*(Ts_wall + Ts_fluid) | Film temperature |
| Medium.ThermodynamicState[nHT] | states_film (from PartialHeatTransfer) | Medium.setState_pTX(Medium.pressure(states), Ts_film, Medium.X_default) | Film state |
| SI.MassFlowRate[nHT] | m_flows (from PartialHeatTransfer) | Fluid mass flow rate | |
| SI.Velocity[nHT] | vs_film (from PartialHeatTransfer) | Velocity with properties evaluated at film temperature | |
| SI.ReynoldsNumber[nHT] | Res (from PartialHeatTransfer) | Reynolds number | |
| SI.ReynoldsNumber[nHT] | Res_film (from PartialHeatTransfer) | Reynolds number with properties evaluated at film temperature | |
| SI.PrandtlNumber[nHT] | Prs (from PartialHeatTransfer) | Prandtl number | |
| SI.PrandtlNumber[nHT] | Prs_film (from PartialHeatTransfer) | Prandtl number with properties evaluated at film temperature | |
| SI.Length[nHT] | xs (from PartialHeatTransfer) | Position of local heat transfer calculation | |
| SI.CoefficientOfHeatTransfer[nHT] | alphas (from PartialHeatTransfer) | Coefficient of heat transfer | |
| SI.NusseltNumber[nHT] | Nus (from PartialHeatTransfer) | Nusselt number | |
| TRANSFORM.Media.BaseProperties1Phase | mediums (from PartialSinglePhase) | Bulk fluid properties | |
| TRANSFORM.Media.BaseProperties1Phase | mediums_film (from PartialSinglePhase) | Film fluid properties | |
| SI.CoefficientOfHeatTransfer | alpha0 | 0 | Coefficient of heat transfer |
| SI.CoefficientOfHeatTransfer[nHT] | alphas0 | fill(alpha0, nHT) | if non-uniform then set |