Abstract
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.
| Translated title of the contribution | Effects of Number of Carbon Atoms in Molecule of Liquid Fuels on Characteristic of Micro-Scale Jet Flames |
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| Original language | Chinese (Traditional) |
| Pages (from-to) | 574-582 |
| Number of pages | 9 |
| Journal | Tuijin Jishu/Journal of Propulsion Technology |
| Volume | 40 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 1 Mar 2019 |