| Medium.ThermodynamicState[nHT] | states | | Thermodynamic state of fluid |
| SI.Velocity[nHT] | vs | | Fluid Velocity |
| SI.Diameter[nHT] | dimensions | | Characteristic dimension (e.g. hydraulic diameter) |
| SI.Area[nHT] | crossAreas | | Cross sectional flow area |
| SI.Length[nHT] | dlengths | | Characteristic length of heat transfer segment |
| SI.Height[nHT] | roughnesses | | Average height of surface asperities |
| SI.Area[nHT,nSurfaces] | surfaceAreas | | Surface area for heat transfer |
| Units.NonDim | CF | 1.0 | Correction Factor: Q = CF*alpha*A*dT |
| Units.NonDim[nHT,nSurfaces] | CFs | fill(CF, nHT, nSurfaces) | if non-uniform then set |
| Medium.ThermodynamicState[nHT,nSurfaces] | states_wall | Medium.setState_pTX(transpose({Medium.pressure(states) for i in 1:nSurfaces}), Ts_wall, Medium.X_default) | |
| SI.Temperature[nHT] | Ts_fluid | Medium.temperature(states) | Fluid temperature |
| SI.Temperature[nHT,nSurfaces] | Ts_wall | heatPorts.T | Wall temperature |
| SI.MassFlowRate[nHT] | m_flows | | Fluid mass flow rate |
| SI.ReynoldsNumber[nHT] | Res | | Reynolds number |
| SI.PrandtlNumber[nHT] | Prs | | Prandtl number |
| SI.CoefficientOfHeatTransfer[nHT,nSurfaces] | alphas | | Coefficient of heat transfer |
| SI.NusseltNumber[nHT,nSurfaces] | Nus | | Nusselt number |
| SI.HeatFlowRate[nHT,nSurfaces] | Q_flows | heatPorts.Q_flow/nParallel | Heat flow rate |