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RISS 인기검색어
- 검색키워드
- 저자 : 권순익(Soonik Kwon) (검색결과 21 건)
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권순익(Soonik Kwon),김상진(Sangjin Kim) 한국자동차공학회 2003 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
The thickness of flame and preheat zone from burning velocity which was computed, using premix code of Chemkin program for ethanol-air mixture. Also the thickness was measured from temperature profile which is also obtained from premix code for the equivalence ratio of 0.6 to 1.6. The computations were carried out for the laminar flame thickness and burning velocity under the unburned gas pressure 0.5bar-30bar and temperature of 300K-700K at <br/> Φ1.0. Comparison of the results showed no difference between these two methods. The flame thickness was decreased by increasing the pressure and temperature, but, the affect of pressure is more significant than the effect of temperature on the flame thickness. The thickness of preheat zone was about 68.5% of the flame thickness, and the ratio of measured flame thickness in calculated flame thickness is about 61.5%. The flame thickness was predicted by using the following equations.<br/>
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권순익(Soonik Kwon),김상진(Sangjin Kim) 한국자동차공학회 2004 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
The laminar burning velocity were measured using a spherical combustion bomb with central ignition.<br/> Mixtures with equivalence ratio between 0.6 and 1.2, were tested. The computations: were carried out for the burning velocity using premix code of Chemkin program under the unburned gas pressure 0.5bar-30bar and temperature of 300K-700K at φ1.0, The results showed little difference between these two methods. The burning velocity was decreased by increasing the pressure and increased by increasing the temperature. The burning velocity was predicted by using the following equations.<br/> S_L(m/s)=S_st(T/300)^1.85(P)^-0.45 (0.5bar□P≤30bar, 300K□T≤ 700K)
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권순익(Soonik Kwon),김상진(Sangjin Kim) 한국자동차공학회 2005 한국자동차공학회 춘 추계 학술대회 논문집 Vol.2005 No.11_1
Flame speed of methane mixtures of water vapor and air have been measured to study the process of flame propagation using schlieren photographs. The quantity of water vapor contained were changed 5% and 10% of total mixtures, and equivalence ratio of mixtures between 0.8 and 1.2 were tested under the ambient temperature 323K and 373K. The results showed that the burning velocity was decreased by increasing the water vapor contents due to the interruption of flame development. And, the effect of ambient temperature was less significant by increasing the water contents on the burning velocity.
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