modelStodolaTurbine
Multistage turbine group using Stodola's ellipse
Information
## Copyright © EDF 2002 - 2026
## ThermoSysPro Version 4.2
This component model is documented in Sect. 10.2 of the ThermoSysPro book.
Parameters
| Type | Name | Default | Description |
|---|
| Real | Cst | 1.e7 | Stodola's ellipse coefficient |
| Real | W_fric | 0.0 | Power losses due to hydrodynamic friction (percent) |
| Real | eta_stato | 1.0 | Efficiency to account for cinetic losses (<= 1) (s.u.) |
| Units.SI.Area | area_nz | 1 | Nozzle area |
| Real | eta_nz | 1.0 | Nozzle efficency (eta_nz < 1 - turbine with nozzle - eta_nz = 1 - turbine without nozzle) |
| Units.SI.MassFlowRate | Qmax | 1 | Maximum mass flow through the turbine |
| Real | eta_is_nom | 0.8 | Nominal isentropic efficiency |
| Real | eta_is_min | 0.35 | Minimum isentropic efficiency |
| Real | a | -1.3889 | x^2 coefficient of the isentropic efficiency characteristics eta_is=f(Q/Qmax) |
| Real | b | 2.6944 | x coefficient of the isentropic efficiency characteristics eta_is=f(Q/Qmax) |
| Real | c | -0.5056 | Constant coefficient of the isentropic efficiency characteristics eta_is=f(Q/Qmax) |
| Units.SI.MassFlowRate | gamma_diff | 1e-4 | Diffusion conductance (active if diffusion=true in neighbouring volumes) |
| Fluid › Fluid properties |
| IF97Region | region_e | IF97Region.All_regions | IF97 region before expansion (active for IF97 water/steam only) |
| IF97Region | region_s | IF97Region.All_regions | IF97 region after expansion (active for IF97 water/steam only) |
| IF97Region | region_ps | IF97Region.All_regions | IF97 region after isentropic expansion (active for IF97 water/steam only) |
Revisions
Authors
Daniel Bouskela
Baligh El Hefni
