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water injection and evaporation

  • Thread starter Thread starter FiliSimo
  • Start date Start date

FiliSimo

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Hello everyone, I am a mechanical engineering student who is currently working on cfd to realize the master thesis. I should shape the injection of a jet of water inside a system open to regimen of which I know temperature and pressure and see if actually the water that injects can evaporate before leaving the system. being the first simulation I do of this type I am finding myself quite in difficulty because my knowledge of fluent is limited to much simpler cases. My approach was as follows:
  • choice of a non stationary simulation
  • activation of the energy model
  • activation of the k-epsilon turbulence model (2 eq.)
  • activation of the species-species transport model
  • activation dpm model
My doubts are basically linked to the last two models. the species transport model I activated it because the flow in which water inject is constituted by a gas mixture of which I know the composition and in which there is also water vapour. I activated the dpm because I want to simulate an injection. from the dpm window then I went directly to injection and defined a cone injection with the correct (hope) data. in the creation of the injection I chose as liquid water material and as evaporating species h2o <l> after setting as a particle type droplet. at this point I set as bc a mass flow inlet for the input mouth and a pressure outlet for the output one and initialized the solution referring to the input mouth.
I did this I launched the simulation.
Can you tell me if my method of proceeding is correct or not? at the end of simulation I would like to see how the injected flow evolves over time (as it moves, as it vaporizes, if it vaporizes everything) but I can't see anything through the particle tracking.

Thank you very much in advance

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