• Real-world liquids will boil when the saturation curve is reached by whatever thermo process.
  • Likewise, real-world gasses will condense when the sat curve is reached.
  • Similar changes between solid-liquid (melt/freeze) and solid-gas (sublimate/frost).
• However, the GUNNS liquid & gas fluid types won’t automatically phase change:
  • You can get liquid in a node that is sitting in the gas region of the phase diagram but still liquid & vice-versa.
  • This is unrealistic so it’s up to you to avoid/accept/work around based on your needs.
• Phase in a node is fixed — once it’s initialized with gas, it can’t change to liquid, etc.
  • Gas & liquids must occupy separate nodes dedicated to their phase.
• Certain specialized links can do the phase change on flows between gas & liquid nodes:
  • GunnsFluidCondensingHxSeparator: (gas→liquid)
    • Can also evaporate the pooled liquid (liquid→gas).
  • GunnsFluidSelectiveMembrane: (gas<—>liquid)
  • GunnsFluidPhaseChangeConductor & GunnsFluidPhaseChangeSource: (gas<—>liquid)
  • GunnsFluidSublimator: (liquid→internal solid→gas)
• This limits the types of phase change processes we can model.
  • Someday we’ll have “hi-fi” fluid properties & node/links that can do all phase changes automatically.

Previous Page / Next Page