๐จ Steam Turbine Wilson Loss & Baumann Sizer
Size multi-stage steam turbines: Baumann wetness efficiency degradation, Wilson condensation line, exhaust dryness fraction, and LP blade erosion risk.
โก Fortran 90 Engine
Double Precision (IEEE 754)
โ ISO / ASME Validated
Turbomachinery
๐ Solver Telemetry
โ ACTIVE
๐๏ธ Views
22
โก Solves
20
๐พ Downloads
257
๐ฆ Fortran Code
5.2 KB
๐
Released
Jun 2026
โฑ๏ธ Latency
< 1 ms
๐ Mollier h-s Diagram & LP Turbine Moisture Expansion
Real-time visual simulation: Superheat expansion crossing Wilson line into the two-phase moisture zone๐ Configuration & Presets
๐ฅ CCGT LP Condensing
โ๏ธ Nuclear PWR Saturated LP
๐ฟ Biomass CHP Backpressure
๐ Geothermal Wet Flash
Baumann Wetness Rule & Wilson Condensation:
โข Baumann Rule: ฮทwet = ฮทdry ยท [1 โ ฮฑ ยท (y2 / 2)]
โข Moisture Content: y2 = 1 โ x2 [%]
โข Specific Work: ฮh = (h1 โ h2s) ยท ฮทwet ยท Reheat [kJ/kg]
โข Turbine Power: Pturb = แน ยท ฮh [MW].
โข Baumann Rule: ฮทwet = ฮทdry ยท [1 โ ฮฑ ยท (y2 / 2)]
โข Moisture Content: y2 = 1 โ x2 [%]
โข Specific Work: ฮh = (h1 โ h2s) ยท ฮทwet ยท Reheat [kJ/kg]
โข Turbine Power: Pturb = แน ยท ฮh [MW].
๐ Performance Results
Configure inputs and click Compute to view results.
๐ Calculation Methodology & Steam Turbine Standards
Wilson Line & Homogeneous Nucleation
During rapid expansion across the saturation boundary, steam becomes supersaturated and subcooled until reaching the Wilson line ($y \approx 4\%$), triggering spontaneous fog droplet condensation.
Baumann Wetness Rule & Blade Erosion
Liquid water droplets collide with high-speed LP blade leading edges, causing aerodynamic drag (Baumann loss ~1% per 1% moisture) and mechanical pitting erosion if moisture exceeds 12%.
Key Engineering Assumptions
- IAPWS-IF97 steam property formulations.
- Baumann wetness factor $\alpha \approx 0.85 - 1.05$.
- Widely used in thermal power plants, nuclear LP turbines, and geothermal expanders.