DDT in closed straight pipe
 

Hi,

I have a question. I am investigating gas explosion behavior involving premixed methane-air mixture in a closed straight pipe. I mean no inlet or outlet. I used finite rate/eddy dissipation, k-epsilon model. It was adiabatic wall. I tried to ignite the mixture by patching with high temperature but still got very low pressure profile. Do you have any idea how to overcome this problem?


Thanks for your help. I'd really appreciate.
Have a good day.

I am using OpenFOAM for my CFD simulations, and it is pretty good, so I will suggest you give it a try!
Also, I believe your initial condition is so important, try to set it, same as the experiment you have. Also, you should check your mesh resolutions, most of the times combustion problems are so sensitive to your mesh resolutions, and you need to satisfy a certain amount of points per half reaction length.

Good Luck,
Reza