Abstract
The exploration of microgravity conditions in space is increasing and existing fire extinguishing technology is often inadequate for fire safety in this special environment. As a result, improving the efficiency of portable extinguishers is of growing importance. In this work, a visual study of the effects on methane jet diffusion flames by low frequency sound waves is conducted to assess the extinguishing ability of sound waves. With a small-scale sound wave extinguishing bench, the extinguishing ability of certain frequencies of sound waves are identified, and the response of the flame height is observed and analyzed. Results show that the flame structure changes with disturbance due to low frequency sound waves of 60–100 Hz, and quenches at effective frequencies in the range of 60–90 Hz. In this range, 60 Hz is considered to be the quick extinguishing frequency, while 70–90 Hz is the stable extinguishing frequency range. For a fixed frequency, the flame height decreases with sound pressure level (SPL). The flame height exhibits the greatest sensitivity to the 60 Hz acoustic waves, and the least to the 100 Hz acoustic waves. The flame height decreases almost identically with disturbance by 70–90 Hz acoustic waves.
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Beisner, E., Wiggins, N.D., Yue, K.B.: Acoustic Flame Suppression Mechanics in a Microgravity Environment. Microgravity Sci. Technol. 27, 141–144 (2015)
Blaszczyk, J.: Acoustically disturbed fuel droplet combustion[J]. Fuel 70(9), 1023–1025 (1991)
Dattarajan, S., Lutomirski, A., Lobbia, R., et al.: Acoustic excitation of droplet combustion in microgravity and normal gravity[J]. Combustion and Flame 144(1), 299–317 (2006)
Feng, Z., Zhanbin, L., Shuangfeng, W.: Flame spread and extinction over a thick solid fuel in low-velocity opposed and concurrent flows[J]. Microgravity Sci. Technol. 28(2), 87–94 (2016)
Hansen, C.H., Sehrndt, C.H.: Fundamentals of acoustics[J]. Occupational exposure to noise: Evaluation, prevention and control. World Health Organization (2001)
Hou, S.S., Chung, D.H., Lin, T.H.: Experimental and numerical investigation of jet flow and flames with acoustic modulation[J]. Int. J. Heat Mass Transf. 83, 562–574 (2015)
Hu, L., Wang, Q., Delichatsios, M., et al.: Flame height and lift-off of turbulent buoyant jet diffusion flames in a reduced pressure atmosphere[J]. Fuel 109, 234–240 (2013)
Koshigoe, S., Komatsuzaki, T., Yang, V.: Adaptive control of combustion instability with on-line system identification[J]. J. Propuls. Power 15(3), 383–389 (1999)
McKinney, D.J., Dunn-Rankin, D.: Acoustically driven extinction in a droplet stream flame[J]. Combust. Sci. Technol. 161(1), 27–48 (2007)
Oran, E.S., Gardner, J.H.: Chemical-acoustic interactions in combustion systems[J]. Prog. Energy Combust. Sci. 11(4), 253–276 (1985)
Pramod, B., Ravinder, S.: Effect of oxygen enrichment in propane laminar diffusion flames under microgravity and earth gravity conditions[J]. Microgravity Sci. Technol. 29, 177–190 (2017)
Pratap, S., Andrei, N.L., Jerzy, C.: Effects of flame development and structure on thermo-acoustic oscillations of premixed turbulent flames[J]. The Japan Society of Mechanical Engineers C8–4 (2004)
Shafiq, R.Q., Waqar, A., Robert, P.: Behabiour of a premixed flame subjected to acoustic oscillations[J]. PLoS ONE 8(12), e81659 (2013)
Tyndall, J.: XIV. On sounding and sensitive flames[J]. The London, Edinburgh, and Dublin Philosophical Magazine and Journal of Science 33(221), 92–99 (1867)
Wu, X., Wang, M., Moin, P., Peters, N.: Combustion instability due to the nonlinear interaction between sound and flame. J. Fluid Mech. 497, 23–53 (2001)
Acknowledgments
This study was financially supported by the National Natural Science Foundation of China (Grant No. 51576185, 51606092), National Key Technology R&D Program (No. 2016YFC0802101), Fundamental Research Funds for the Central Universities (No. WK2320000034), and Open Project Program of the State Key Laboratory of Fire Science (Grant No. HZ2016-KF02), University of Science and Technology of China.
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Zong, R., Kang, R., Liu, C. et al. Analysis of Flame Extinguishment and Height in Low Frequency Acoustically Excited Methane Jet Diffusion Flame. Microgravity Sci. Technol. 30, 237–242 (2018). https://doi.org/10.1007/s12217-017-9590-5
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DOI: https://doi.org/10.1007/s12217-017-9590-5