| Medium.ThermodynamicState | state (from PartialHeatTransfer_setT) | | Thermodynamic state of fluid |
| SI.Velocity | v (from PartialHeatTransfer_setT) | | Fluid Velocity |
| SI.Diameter | dimension (from PartialHeatTransfer_setT) | | Characteristic dimension (e.g. hydraulic diameter) |
| SI.Area | crossArea (from PartialHeatTransfer_setT) | | Cross sectional flow area |
| SI.Area | surfaceArea (from PartialHeatTransfer_setT) | | Surface area for heat transfer |
| SI.Temperature | T_fluid (from PartialHeatTransfer_setT) | Medium.temperature(state) | Fluid temperature |
| SI.Temperature | T_wall (from PartialHeatTransfer_setT) | heatPort.T | Wall temperature |
| SI.MassFlowRate | m_flow (from PartialHeatTransfer_setT) | | Fluid mass flow rate |
| SI.ReynoldsNumber | Re (from PartialHeatTransfer_setT) | | Reynolds number |
| SI.PrandtlNumber | Pr (from PartialHeatTransfer_setT) | | Prandtl number |
| SI.CoefficientOfHeatTransfer | alpha (from PartialHeatTransfer_setT) | | Coefficient of heat transfer |
| SI.NusseltNumber | Nu (from PartialHeatTransfer_setT) | | Nusselt number |
| SI.HeatFlowRate | Q_flow (from PartialHeatTransfer_setT) | heatPort.Q_flow/nParallel | Heat flow rate |
| TRANSFORM.Media.BaseProperties2Phase | mediaProps (from PartialTwoPhase) | | Bulk fluid properties |
| SI.CoefficientOfHeatTransfer | alpha_SinglePhaseLiquid_lam | mediaProps.lambda./dimension.*HeatAndMassTransfer.ClosureRelations.HeatTransfer.Functions.SinglePhase.InternalFlow.Nu_DittusBoelter(Re, Pr) | Laminar coefficient of heat transfer - Liquid Phase |
| SI.CoefficientOfHeatTransfer | alpha_SinglePhaseLiquid_turb | mediaProps.lambda./dimension.*HeatAndMassTransfer.ClosureRelations.HeatTransfer.Functions.SinglePhase.InternalFlow.Nu_DittusBoelter(Re, Pr) | Turbulent coefficient of heat transfer - Liquid Phase |
| SI.CoefficientOfHeatTransfer | alpha_TwoPhaseSaturated | mediaProps.lambda./dimension.*HeatAndMassTransfer.ClosureRelations.HeatTransfer.Functions.SinglePhase.InternalFlow.Nu_DittusBoelter(Re, Pr) | Coefficient of heat transfer - Saturated Two Phase |
| SI.CoefficientOfHeatTransfer | alpha_SinglePhaseVapor_lam | mediaProps.lambda./dimension.*HeatAndMassTransfer.ClosureRelations.HeatTransfer.Functions.SinglePhase.InternalFlow.Nu_DittusBoelter(Re, Pr) | Laminar coefficient of heat transfer - Vapor Phase |
| SI.CoefficientOfHeatTransfer | alpha_SinglePhaseVapor_turb | mediaProps.lambda./dimension.*HeatAndMassTransfer.ClosureRelations.HeatTransfer.Functions.SinglePhase.InternalFlow.Nu_DittusBoelter(Re, Pr) | Turbulent coefficient of heat transfer - Vapor Phase |
| SI.Length | L_char | dimension | Characteristic dimension for calculation of Nu |
| SI.ThermalConductivity | lambda | mediaProps.lambda | Thermal conductivity for calculation of Nu |
| Real[3] | HT_width | {0.02, 0.02, 0.02} | Smooth transition width |
| Real[3] | HT_smooth | {0, 0.5, 0.9} | Smooth value for transition between regions with phase transition |
| Real | Var_smooth | mediaProps.alphaV | Variable for smoothing between regions with phase transition |
