TY - JOUR
T1 - 液体燃料碳原子数对微尺度扩散火焰特性的影响
AU - Mei, Kai
AU - Li, Jun Wei
AU - Wang, Ning Fei
N1 - Publisher Copyright:
© 2019, Editorial Department of Journal of Propulsion Technology. All right reserved.
PY - 2019/3/1
Y1 - 2019/3/1
N2 - In order to get characteristics of the micro-scale diffusion flame of liquid fuels, n-pentane, n-heptane, n-octane, n-decane, n-dodecane were studied experimentally. The following results are obtained. (1) The diffusion flame shapes are different, including spherical shape, ellipsoidal shape, slender shape, agminated shape and explosive shape depending on the flow rate; the more carbon contained in the fuel, the smaller the combustion limit is. (2) The flame height is proportional to Reynolds number, and the fuel containing more carbon has smaller ratio of flame height and Reynolds number. Roper's model for estimating diffusion flame height applies to liquid alkane as well. The error between the experiment value and the model is within 25%. (3) The temperature of tube wall decreases as the flow rate increase, and the temperature of flame increases instead. The flame temperature depends on the shapes of these flame. The temperature of tube wall and flame temperature of different fuel decrease with the increase of carbon content.
AB - In order to get characteristics of the micro-scale diffusion flame of liquid fuels, n-pentane, n-heptane, n-octane, n-decane, n-dodecane were studied experimentally. The following results are obtained. (1) The diffusion flame shapes are different, including spherical shape, ellipsoidal shape, slender shape, agminated shape and explosive shape depending on the flow rate; the more carbon contained in the fuel, the smaller the combustion limit is. (2) The flame height is proportional to Reynolds number, and the fuel containing more carbon has smaller ratio of flame height and Reynolds number. Roper's model for estimating diffusion flame height applies to liquid alkane as well. The error between the experiment value and the model is within 25%. (3) The temperature of tube wall decreases as the flow rate increase, and the temperature of flame increases instead. The flame temperature depends on the shapes of these flame. The temperature of tube wall and flame temperature of different fuel decrease with the increase of carbon content.
KW - Alkane
KW - Combustion limit
KW - Flame height
KW - Micro-scale
KW - Tube wall-temperature
UR - http://www.scopus.com/inward/record.url?scp=85067193929&partnerID=8YFLogxK
U2 - 10.13675/j.cnki.tjjs.180098
DO - 10.13675/j.cnki.tjjs.180098
M3 - 文章
AN - SCOPUS:85067193929
SN - 1001-4055
VL - 40
SP - 574
EP - 582
JO - Tuijin Jishu/Journal of Propulsion Technology
JF - Tuijin Jishu/Journal of Propulsion Technology
IS - 3
ER -