-
|
Hello! I have been working on a project where I want to simulate a fire in a house consisting out of three rooms. I have added a t^2 fire to one room with a time to peak and decay time of 1 s and a steady burning period if 8000 s. While testing I also made the peak HRR 10000 KW. My problem is that even though I have set the steady burning period to 8000s the fire only actually burns for roughly 30 s and after that the temperatures rapidly decreases when I run the simulation. I have been banging my head against the wall and can't figure out what I'm doing wrong. I have making a new file redoing everything but with the same results. Can anybody here see what's wrong? 
|
Beta Was this translation helpful? Give feedback.
Replies: 2 comments
-
|
Fires require oxygen to burn. A 10 MW fire wil require ~0.75 kg O2/s to burn. You have ~130 m^3 of compartment volume which means you start with ~37 kg of oxygen. You have no vents to the exterior for more oxygen to enter. |
Beta Was this translation helpful? Give feedback.
-
|
Well that's embarrassing. Don't know how I forgot about something as basic as the fire needing air. Adding some ventilation fixed it. Thanks for the help |
Beta Was this translation helpful? Give feedback.
Fires require oxygen to burn. A 10 MW fire wil require ~0.75 kg O2/s to burn. You have ~130 m^3 of compartment volume which means you start with ~37 kg of oxygen. You have no vents to the exterior for more oxygen to enter.