🌀 Centrifugal Compressor Stage Sizer
Size centrifugal compressor stages: polytropic head (Schulz/ASME PTC 10), impeller tip Mach number, shaft power demand, discharge temperature, and surge margin.
⚡ Fortran 90 Engine
Double Precision (IEEE 754)
✓ ISO / ASME Validated
📊 Solver Telemetry
● ACTIVE
👁️ Consultations
38
⚡ Calculs faits
30
💾 Téléchargements
167
📦 Code Fortran
5.2 KB
📅 Mise en service
Jun 2026
⏱️ Latence
< 1 ms
🌀 High-Speed Centrifugal Impeller & Diffuser Volute
Real-time visual simulation: Axial gas entry into eye, centrifugal acceleration, and radial diffuser discharge📝 Configuration & Presets
ASME PTC 10 & Schulz Polytropic Formulation:
• Polytropic Exponent: (n−1)/n = (k−1) / (k · ηp)
• Polytropic Head: Hp = Zavg · R · T1 · [n/(n−1)] · [(P2/P1)(n-1)/n − 1] [kJ/kg]
• Tip Speed: U2 = π · D2 · (N/60) [m/s] | Tip Mach: Mu2 = U2 / a1
• Shaft Power: Pshaft = (ṁ · Hp) / (ηp · ηmech) [kW / MW].
• Polytropic Exponent: (n−1)/n = (k−1) / (k · ηp)
• Polytropic Head: Hp = Zavg · R · T1 · [n/(n−1)] · [(P2/P1)(n-1)/n − 1] [kJ/kg]
• Tip Speed: U2 = π · D2 · (N/60) [m/s] | Tip Mach: Mu2 = U2 / a1
• Shaft Power: Pshaft = (ṁ · Hp) / (ηp · ηmech) [kW / MW].
📊 Performance Results
Configure inputs and click Compute to view results.
📘 Calculation Methodology & Centrifugal Compressor Standards
Polytropic Head (Schulz & ASME PTC 10)
Because gas density and compressibility change along the compression path, the polytropic exponent $n$ accounts for internal irreversible losses, giving exact aerodynamic head and shaft power predictions.
Tip Mach Number & Aerodynamic Limits
When the blade tip Mach number $M_{u2}$ approaches or exceeds unity ($>1.0$), shock waves at the diffuser inlet cause separation and narrowing of the stable operating range.
Key Engineering Assumptions
- API 617 & ASME PTC 10 compressor performance standard.
- Backward-curved impeller vanes ($\beta_{2b} \approx 45^\circ - 60^\circ$) for wide stable range.
- Widely used in natural gas pipeline boosters, ethylene plants, and refinery hydrogen compressors.