Journal
EXPERIMENTAL HEAT TRANSFER
Volume 30, Issue 6, Pages 489-499Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/08916152.2017.1305468
Keywords
airflow speed; combustion efficiency; flame length; heat transfer; pool fire
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Funding
- National Natural Science Foundation of China [51408181, 51574210]
- Fundamental Research Funds for the Central Universities [JZ2016HGBZ0766, JZ2017HGTB0208]
- Opening Foundation of State Key Laboratory of Fire Science, University of Science and Technology of China [HZ2017-KF01]
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In this paper, the effect of airflow speed on flame length of liquid pool fires has been experimentally studied based on a small-scale wind tunnel, where the airflow speed was varied from 0 to 2.93 m/s during the tests. Different sizes of the pool with 2, 3, 4, 6, 8, and 10 cm diameter were considered. The experimental results show that with increase of Ri(-1), the non-dimensional flame length of alcohol pool fire firstly increases and then decreases after Ri(1) exceeds 8.0, while the non-dimensional flame length of n-heptane pool fire increases with increase of Ri(-1). It was also found that the flame length response to the airflow speed correlates to heat release rate of the fire, which was seriously influenced by combustion efficiency. A model was also developed for predicting flame length of a pool fire influenced by airflow with Ri(-1)<30.
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