Reference · R3
Governing equations
FSAP solves conservation of mass, momentum, and energy on the network graph using a sparse Jacobian. Closure correlations are cited and swappable per branch.
- Friction — Darcy-Weisbach with Colebrook-White
- Two-phase ΔP — Lockhart-Martinelli, Friedel
- Boiling — Chen, Shah
- Forced convection — Dittus-Boelter, Gnielinski
- Heat exchangers — effectiveness-NTU
- Compressible flow — isentropic / Fanno relations at restrictions
- Transient — Backward-Euler integration