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Fire Dynamics Simulator
https://pages.nist.gov/fds-smv/
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combustion model #11172

Closed nadir0707 closed 1 year ago

nadir0707 commented 1 year ago

hello everyone I have a question about the combustion model used by default, it was stated in the technical reference guide FDS 6.7.6, that FDS uses EDC when it is a diffusion flame and the kinetics are fast compared with the mixing, where the combustion model is based on the mixing-Limited when its mixed reaction and more complicated (CO and soot formation). so my question is : 1) the FDS is not based on mixture fraction in the general approach anymore? 2) in my case :

&REAC FUEL = 'Epoxy' FYI = 'C_1 H_1.3 O_0.2, NFPA Handbook, Babrauskas' SOOT_YIELD = 0.01 CO_YIELD = 0.25 C = 1 H = 1.3 O = 0.2 /

&SURF ID='fire' , HRRPUA=1800 , RAMP_Q='q1'/

since I imposed (soot and co) then the combustion model used based on mixing-Limited or the EDC since the fuel and the air are not mixed? thank you in advance best regards

mcgratta commented 1 year ago

This question should be directed to the Discussion Forum. The Issue Tracker is for bug reports.