[xtarget]

Hi everybody,

I've used fluent program simulate car park fire.We analysis the critic point of fire. the area of the park is 144000 m^2 and we use some jet fans to canalize the clean air and hot air.

We chose a car to burn; from the car surface applied 15 kg/s CO2 and 600 C degree hot air into the big car park domain. species transport model was used. But my problem is that; there is no reaction here so the 15 kg/s is extra for my domain. the real problem includes reaction (O2 and X material enters the reaction and CO2 and H2O consist at last, basicly)..and doesnt happen this additional mass flow (15 kg/s) it breaks my correct approximation for fans energy so i have to change jet fans (N/m^3) energy.

This occurs incorrect solution. For instance, when i used 15 kg/s CO2 mass flow 5.4 kg/s air is going out from the pressure outlet door whereas the fresh air has come into the domain not go out according to my fans...

what should i do for this extra CO2 mass flow i cant simulate the real reaction model transient. It has take more time. what is the right approximation for Critic time, steady-state analysis..


many thanks to read...