Compressible Flows Workbench

Helpful tools for modeling steady, non-reacting, single-phase, 1D flows where Mach number may surpass $M>0.3$ (significant compressibility effects).

Features

• Flow functions
  • Isentropic
  • Normal shock
  • Fanno
  • Rayleigh
• Simple handling of units (e.g. units conversion)
• Automatic determination of friction factor $f(\varepsilon/D, Re_D)$ via Colebrook's equation
• Default properties of common gases

Validity domain

• 1D flow modeling (gradients)
• Steady (no temporal variation) or quasi-steady (succession of states each in thermodynamic equilibrium) regimes
• Any Mach number $M \in [0, +\infty[$
• Negligible effects of
  • chemical reactions (including ionization, typical for $M>5$)
  • phase changes
  • gravitational potential changes
• Medium
  • Mono, bi- and some triatomic gases
  • any specific heat capacity and heat capacity ratio $(c_p, \gamma)$

Extra: Interactive Visualization of Flow Functions

• Isentropic
• Normal Shock
• Fanno
• Rayleigh