pressure in a constant volume chamber

- November 13, 2019 at 9:04 am
  
  kedy4ect
  Subscriber
  
  I am simulating a fuel spray in a constant volume combustion chamber using species transport. However, I have noticed that the pressure in the combustion chamber keeps rising even the fuel has not ignited. Is there a way to measure the pressure with respect to the combustion. In other words, I would like to measure the combustion pressure.
  
  Thanks a lot
  
  Best Regards
- November 13, 2019 at 9:12 am
  
  Rob
  Ansys Employee
  
  If it's constant volume and you're adding material the pressure has to go up?
- November 13, 2019 at 9:14 am
  
  kedy4ect
  Subscriber
  
  From the experimental data, the pressure of the constant volume remains almost constant until combustion occurs. However, what I am getting now is that the pressure is increasing from the start of the simulation.
- November 13, 2019 at 11:52 am
  
  Rob
  Ansys Employee
  
  OK, so does mass escape from the experiment? What's different (think through properties & models)?

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