THERMAL SCIENCE

International Scientific Journal

Fengying Long

,

Yulong Duan

,

Yunbing Bu

,

Hailin Jia

,

Shuwei Yu

,

Jun Huang

PROMOTING OF FOAM COPPER WITH CHAOTIC DISTRIBUTED PORES ON THE DEFLAGRATION OF PREMIXED HYDROGEN-AIR FLAME IN THE TUBE

ABSTRACT
The deflagration flame of stoichiometric hydrogen-air mixtures is studied in this paper. Combined with the foam copper structure, the deflagration characteristic is analyzed in this paper. The experimental results show that the foam copper can improve the flow instability at the flame front and the degree of turbulence in the propagation process, the flame propagates more rapidly in turbulence state, and the number of stages of flame morphology during the propagation process in-creases. The classic “tulip” flame can be transformed into a distorted “tulip” flame and a fractal “tulip” flame before it collapses. When the flame passes through the foam copper, the flame front velocity increases as the number of structural layers increases. The flame front velocity propagates at supersonic speed through the accumulation of three layers of foam copper. The instability of overpressure in the propagation process will cause oscillation. More layers of the structure, the oscillation frequency, and the amplitude of the overpressure are increased significantly. Foam copper structure has a reverse action on over-pressure. When the overpressure value is low in the early stage, the structure promotes the propagation, but the overpressure value is large in the later stage, the structure has a blocking effect.
KEYWORDS
foam copper, promote deflagration, instability, turbulence, overpressure oscillation
PAPER SUBMITTED: 2022-04-05
PAPER REVISED: 2022-04-28
PAPER ACCEPTED: 2022-05-06
PUBLISHED ONLINE: 2022-07-09
DOI REFERENCE: https://doi.org/10.2298/TSCI220405101L
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2022, VOLUME 26, ISSUE Issue 6, PAGES [5199 - 5209]
REFERENCES
  1. Sánchez, A. L., et al., The chemistry involved in the third explosion limit of H2-O2 mixtures, Combustion and Flame, 161(2014), 1, pp. 111-117. doi.org/10.1016/j.combustflame.2013.07.013
  2. Ciccarelli G., Dorofeev S., Flame acceleration and transition to detonation in ducts, Progress in Energy and Combustion Science, 34(2008), 4, pp. 499-550. doi.org/10.1016/j.pecs.2007.11.002
  3. Najim Y. M., et al., On premixed flame propagation in a curved constant volume channel, Combustion and Flame, 162(2015), 10, pp. 3980-3990. doi.org/10.1016/j.combustflame.2015.07.037
  4. Dorofeev S. B., Evaluation of safety distances related to unconfined hydrogen explosions, International Journal of Hydrogen Energy, 32(2007), 13,2118-2124. doi.org/10.1016/j.ijhydene.2007.04.003
  5. Sun Z. Y., Experimental studies on the explosion indices in turbulent stoichiometric H2/CH4/air mixtures, International Journal of Hydrogen Energy, 44(2019), 1, pp.469-476. doi.org/10.1016/j.ijhydene.2018.02.094
  6. McGarry J. P., Ahmed K.A., Flame-turbulence interaction of laminar premixed deflagrated flames, Combustion and Flame, 176(2017), pp. 439-450. doi.org/10.1016/j.combustflame.2016.11.002
  7. Ahmed I., Swaminathan N., Simulation of turbulent explosion of hydrogen-air mixtures, International Journal of Hydrogen Energy, 39(2014), 17, pp. 9562-9572. doi.org/10.1016/j.ijhydene.2014.03.246
  8. Xiao H. H., et al., Effects of pressure waves on the stability of flames propagating in tubes, Proceedings of the Combustion Institute, 36(2017), 1, 1577-1583. doi.org/10.1016/j.proci.2016.06.126
  9. Xiao H. H., et al., Premixed flame propagation in hydrogen explosions, Renewable and Sustainable Energy Reviews, 81(2018), 2, pp. 1988-2001. doi.org/10.1016/j.rser.2017.06.008
  10. Wei H. Q., et al., Different combustion modes caused by flame-shock interactions in a confined chamber with a perforated plate, Combustion and Flame, 178(2017), pp. 277-285. doi.org/10.1016/j.combustflame.2017.01.011
  11. Wei H. Q., et al., Effects of the equivalence ratio on turbulent flame-shock interactions in a confined space, Combustion and Flame, 186(2017), 247-262. doi.org/10.1016/j.combustflame.2017.08.009
  12. Wang L.Q., et al., A comparative study of the explosion behaviors of H2 and C2H4 with air, N2O and O2, Fire Safety Journal, 119(2021), pp.103260. doi.org/10.1016/j.firesaf.2020.103260
  13. Duan Q. L., et al., Experimental study of shock wave propagation and its influence on the spontaneous ignition during high-pressure hydrogen release through a tube, International Journal of Hydrogen Energy, 44(2019), 40, pp. 22598-22607. doi.org/10.1016/j.ijhydene.2019.06.166
  14. Ciccarelli G., Explosion propagation in inert porous media, Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 370(2012), pp. 647-667. doi.org/10.1098/rsta.2011.0346
  15. Ciccarelli G., et al., Effect of orifice plate spacing on detonation propagation, Journal of Loss Prevention in the Process, 49(2017), pp. 739-44. doi.org/10.1016/j.jlp.2017.03.014
  16. Golovastov S. V., et al., Influence of porous walls on flame front perturbations in hydrogen-air mixtures, International Journal of Hydrogen Energy, 46(2021), 2, pp. 2783-2795. doi.org/10.1016/j.ijhydene.2020.10.028
  17. Song X., et al., The explosion-suppression performance of mesh aluminum alloys and spherical nonmetallic materials on hydrogen-air mixtures, International Journal of Hydrogen Energy, 45(2020), 56, pp. 32686-32701. doi.org/10.1016/j.ijhydene.2020.08.197
  18. Johansen C., Ciccarelli G., Combustion in a horizontal channel partially filled with a porous media, Shock Waves, 18(2008), pp. 97-106. doi.org/10.1007/s00193-008-0151-0
  19. Liu F. S., et al., Experimental study on induced accelerated combustion of premixed hydrogen-air in a confined environment, International Journal of Hydrogen Energy, 44(2019), 59, pp.31593-31609. doi.org/10.1016/j.ijhydene.2019.10.078
  20. Jin K. Q., et al., Effect of single-layer wire mesh on premixed methane/air flame dynamics in a closed pipe, International Journal of Hydrogen Energy, 45(2020), 56, pp. 32664-32675. doi.org/10.1016/j.ijhydene.2020.08.159
  21. Duan Y. L., et al., Experimental study on methane explosion characteristics with different types of porous media, Journal of Loss Prevention in the Process Industries, 69(2021) ,pp. 104370. doi.org/10.1016/j.jlp.2020.104370
  22. Li Q., et al., Effect of orifice plates spaces on flame propagation in a square cross-section channel, International Journal of Hydrogen Energy, 44(2019),40, pp. 22537-22546. doi.org/10.1016/j.ijhydene.2018.11.220
  23. Jin K. Q., et al., Experimental study on the influence of multi-layer wire mesh on dynamics of premixed hydrogen-air flame propagation in a closed duct, International Journal of Hydrogen Energy, 42(2017), 21, pp. 14809-14820. doi.org/10.1016/j.ijhydene.2017.03.232
  24. Babkin V. S., et al., Propagation of premixed gaseous explosion flames in porous media, Combustion and Flame, 87(1991), 2, pp. 182-90. doi.org/10.1016/0010-2180(91)90168-B
  25. Duan Y. L., et al., Experimental Study on Explosion of Premixed Methane-air with Different Porosity and Distance from Ignition Position, Combustion Science and Technology, 193(2020), 12, pp. 2070-2084. doi.org/10.1080/00102202.2020.1727900
  26. Sun J. H., et al., The comparative experimental study of the porous materials suppressing the gas explosion, Procedia Engineering, 26(2011), pp. 954-960. doi.org/10.1016/j.proeng.2011.11.2262
  27. Banhart J., Manufacture, characterisation and application of cellular metals and metal foams, Progress in Materials Science, 46(2001), 6, pp. 559-632. doi.org/10.1016/S0079-6425(00)00002-5
  28. Yu M. G., et al., Experimental study on explosion characteristics of syngas with different ignition positions and hydrogen fraction, International Journal of Hydrogen Energy, 44(2019), 29, pp. 15553-15564. doi.org/10.1016/j.ijhydene.2019.04.046
  29. Yang X. F., et al., A comparative investigation of premixed flame propagation behavior of syngas-air mixtures in closed and half-open ducts, Energy, 178(2019), pp. 436-446. doi.org/10.1016/j.energy.2019.04.135
  30. Wan S. J., et al., Effect of side vent size on a methane/air explosion in an end-vented duct containing an obstacle, Experimental Thermal and Fluid Science, 101(2019), pp. 141-150. doi.org/10.1016/j.expthermflusci.2018.10.004
  31. Duan Y. L., et al., Characteristics of gas explosion to diffusion combustion under porous materials (in Chinese), Explosion and Shock Waves, 40(2020), 9, pp. 113-212. doi.org/10.11883/bzycj-2020-0009
  32. Yu M. G., et al., Synergistic inhibition of gas explosion by ultrafine water mist-porous materials (in Chinese), Journal of China Coal Society, 44(2019), 5, pp. 1562-1569. doi.org/10.13225/j.cnki.jccs.2018.0795
  33. Wang T., et al., The explosion enhancement of methane-air mixtures by ethylene in a confined chamber, Energy, 214(2021), pp. 119042. doi.org/10.1016/j.energy.2020.119042
  34. Clanet C., Searby G., On the "Tulip flame" phenomenon, Combustion and Flame, 105(1996), 1-2, pp. 225-38. doi.org/10.1016/0010-2180(95)00195-6
  35. Qin Y., Chen X. W., Flame propagation of premixed hydrogen-air explosion in a closed duct with obstacles, International Journal of Hydrogen Energy, 46(2021), 2, pp. 2684-701. doi.org/10.1016/j.ijhydene.2020.10.097
  36. Xiao H. H., et al., Experimental study on the behaviors and shape changes of premixed hydrogen-air flames propagating in horizontal duct, International Journal of Hydrogen Energy, 36(2011), 10, pp. 6325-36. doi.org/10.1016/j.ijhydene.2011.02.049
  37. Zheng K., et al., Effects of hydrogen addition on methane-air deflagration in obstructed chamber, Experimental Thermal and Fluid Science, 80(2017), pp. 270-80. doi.org/10.1016/j.expthermflusci.2016.08.025
  38. Xiao H. H., et al., Formation and evolution of distorted tulip flames, Combustion and Flame, 162(2015), 11, pp. 4084-101. doi.org/10.1016/j.combustflame.2015.08.020
  39. Shen X. B., et al., Experimental study on the characteristic stages of premixed hydrogen-air flame propagation in a horizontal rectangular closed duct, International Journal of Hydrogen Energy, 37(2012), 16, pp. 12028-12038. doi.org/10.1016/j.ijhydene.2012.05.084
  40. Xiao H. H., et al., Experimental and numerical study of premixed hydrogen/air flame propagating in a combustion chamber, Journal of Hazardous Materials, 268(2014), pp. 132-139. doi.org/10.1016/j.jhazmat.2013.12.060
  41. Wang C., et al., Experimental investigation on explosion flame propagation of H2-O2 in a small scale pipeline, Journal of Loss Prevention in the Process Industries, 49(2017), 612-619. doi.org/10.1016/j.jlp.2017.06.004
PDF VERSION [DOWNLOAD]
Promoting of foam copper with chaotic distributed pores on the deflagration of premixed hydrogen-air flame in the tube

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence