Abstract
The thickness of laminar flame and preheat zone was computed from equation with burning velocity and the temperature profile, which is obtained by using premix code of Chemkin program for ethanol-air mixture The computations were carried out under the unburned gas pressure 0.5bar-30bar and temperature of 300K-700K at φ 1.0 A difference flame thickness showed between temperature profile and equation with burning velocity The ratio of flame thickness derived from the equation was about 45~65% of the temperature profile, and the thickness of preheat zone was about 67.1 % of the flame thickness The flame thickness was decreased by increasing the pressure and temperature, but the effect of pressure is more significant than the effect of temperature on the flame thickness The flame thickness was predicted by using the following equation<br/> X(㎜) = Xst(T/300)-0.65(P)-0.68 (0,5bar≤P≤30bar, 300K≤T≤700K)
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