BEHAVIOR OF EXTINCTION LIMITS OF LEAN PREMIXED COUNTERFLOW FLAMES AT ELEVATED TEMPERATURES

摘要

The effects of unburned gas temperature (T_u), mole fraction of oxygen (C(O_2)) in a mixture and pressure on the extinction limit of lean CH_4/O_2/N_2 premixed counterflow flames were experimentally and numerically investigated. Increments of extinction stretch rates with an increase in T_u were measured at a range of 300K