Combustion in Micro Channel Investigating the Effect of Wall Thermal Conductivity of Micro-Channels on Flame Stability

Zafar Namazian; Heidar Hashemi; Jafar Namazian

doi:doi:10.11648/j.ijsts.20150301.13

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Combustion in Micro Channel Investigating the Effect of Wall Thermal Conductivity of Micro-Channels on Flame Stability

Zafar Namazian, Heidar Hashemi, Jafar Namazian

Received: 13 October 2014 Accepted: 30 December 2014 Published: 23 January 2015

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Abstract

In this work, the computational fluid dynamics is used to model a micro torch. This is to investigate the effect of wall conductivity for different operating conditions on combustion characteristics as well as flame stability. The effect of convective heat transfer coefficient on the flame stability, out of the burner, is also studied. The results show that the wall conductivity and the convective heat transfer coefficient are very important to determine heat transfer to upstream. Finally, it is observed that if intermediate conductivity value of a wall is used, it can produce more stable combustion flame. In contrary, in very low and high conductivity, the flame becomes unstable. If the convective heat transfer coefficient of the outer fluid increases, flame becomes unstable again.

DOI	10.11648/j.ijsts.20150301.13
Published in	International Journal of Science, Technology and Society (Volume 3, Issue 1, January 2015)
Page(s)	24-27
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2024. Published by Science Publishing Group

Keywords

Flame Stability, Micro Channel, Thermal Conductivity, Combustion

References

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[2]	Aghalayam, P. and D. Vlachos, "The roles of thermal and chemical quenching in NOx and fuel emissions: Combustion of surface-stabilized hydrogen/air mixtures," AI Ch. E. Journal, vol. 44, (1998), pp. 2025-2034.
[3]	Mujeebu, M. A., M. Abdullah, M. Bakar, A. Mohamad, R. Muhad, and M. Abdullah, "Combustion in porous media and its applications–a comprehensive survey," Journal of environmental management, vol. 90, (2009), pp. 2287-2312.
[4]	Hashemi, H., A. M. Shaharoun, and I. Sudin, "A case-based reasoning approach for design of machining fixture," The International Journal of Advanced Manufacturing Technology, 2014), pp. 1-12.
[5]	Dunn-Rankin, D., E. M. Leal, and D. C. Walther, "Personal power systems," Progress in Energy and Combustion Science, vol. 31, (2005), pp. 422-465.
[6]	Fernandez-Pello, A. C., "Micropower generation using combustion: issues and approaches," Proceedings of the Combustion Institute, vol. 29, (2002), pp. 883-899.
[7]	Kang, K., Y. S. Meng, J. Breger, C. P. Grey, and G. Ceder, "Electrodes with high power and high capacity for rechargeable lithium batteries," Science, vol. 311, (2006), pp. 977-980.
[8]	Hashemi, H., A. Mohamed Shaharoun, S. Izman, and D. Kurniawan, "Recent Developments on Computer Aided Fixture Design: Case Based Reasoning Approaches," Advances in Mechanical Engineering, vol. 2014, (2014), p. 15.
[9]	Davy, H., "Some researches on flame," Philosophical Transactions of the Royal Society of London, vol. 107, (1817), pp. 45-76.
[10]	Saiki, Y. and Y. Suzuki, "Effect of wall surface reaction on a methane-air premixed flame in narrow channels with different wall materials," Proceedings of the Combustion Institute, vol. 34, (2013), pp. 3395-3402.
[11]	Sun, W., S. H. Won, T. Ombrello, C. Carter, and Y. Ju, "Direct ignition and< i> S-curve transition by< i> in situ nano-second pulsed discharge in methane/oxygen/helium counterflow flame," Proceedings of the Combustion Institute, vol. 34, (2013), pp. 847-855.
[12]	Vlachos, D. G., L. D. Schmidt, and R. Aris, "Ignition and extinction of flames near surfaces: Combustion of CH4 in air," AIChE journal, vol. 40, (1994), pp. 1005-1017.
[13]	Linan, A. and F. A. Williams, "Fundamental aspects of combustion," 1993),
[14]	Masel, R. I. and M. A. Shannon, "Microcombustor having submillimeter critical dimensions," ed: Google Patents, 2001.
[15]	Chen, J., L. Yan, and W. Song, "Numerical simulation of micro-scale catalytic combustion characteristics with detailed chemical kinetic reaction mechanisms of hydrogen/air," Reaction Kinetics, Mechanisms and Catalysis, 2014), pp. 1-19.
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APA Style

Zafar Namazian, Heidar Hashemi, Jafar Namazian. (2015). Combustion in Micro Channel Investigating the Effect of Wall Thermal Conductivity of Micro-Channels on Flame Stability. International Journal of Science, Technology and Society, 3(1), 24-27. https://doi.org/10.11648/j.ijsts.20150301.13

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ACS Style

Zafar Namazian; Heidar Hashemi; Jafar Namazian. Combustion in Micro Channel Investigating the Effect of Wall Thermal Conductivity of Micro-Channels on Flame Stability. Int. J. Sci. Technol. Soc. 2015, 3(1), 24-27. doi: 10.11648/j.ijsts.20150301.13

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AMA Style

Zafar Namazian, Heidar Hashemi, Jafar Namazian. Combustion in Micro Channel Investigating the Effect of Wall Thermal Conductivity of Micro-Channels on Flame Stability. Int J Sci Technol Soc. 2015;3(1):24-27. doi: 10.11648/j.ijsts.20150301.13

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@article{10.11648/j.ijsts.20150301.13,
  author = {Zafar Namazian and Heidar Hashemi and Jafar Namazian},
  title = {Combustion in Micro Channel Investigating the Effect of Wall Thermal Conductivity of Micro-Channels on Flame Stability},
  journal = {International Journal of Science, Technology and Society},
  volume = {3},
  number = {1},
  pages = {24-27},
  doi = {10.11648/j.ijsts.20150301.13},
  url = {https://doi.org/10.11648/j.ijsts.20150301.13},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijsts.20150301.13},
  abstract = {In this work, the computational fluid dynamics is used to model a micro torch. This is to investigate the effect of wall conductivity for different operating conditions on combustion characteristics as well as flame stability. The effect of convective heat transfer coefficient on the flame stability, out of the burner, is also studied. The results show that the wall conductivity and the convective heat transfer coefficient are very important to determine heat transfer to upstream. Finally, it is observed that if intermediate conductivity value of a wall is used, it can produce more stable combustion flame. In contrary, in very low and high conductivity, the flame becomes unstable. If the convective heat transfer coefficient of the outer fluid increases, flame becomes unstable again.},
 year = {2015}
}

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TY  - JOUR
T1  - Combustion in Micro Channel Investigating the Effect of Wall Thermal Conductivity of Micro-Channels on Flame Stability
AU  - Zafar Namazian
AU  - Heidar Hashemi
AU  - Jafar Namazian
Y1  - 2015/01/23
PY  - 2015
N1  - https://doi.org/10.11648/j.ijsts.20150301.13
DO  - 10.11648/j.ijsts.20150301.13
T2  - International Journal of Science, Technology and Society
JF  - International Journal of Science, Technology and Society
JO  - International Journal of Science, Technology and Society
SP  - 24
EP  - 27
PB  - Science Publishing Group
SN  - 2330-7420
UR  - https://doi.org/10.11648/j.ijsts.20150301.13
AB  - In this work, the computational fluid dynamics is used to model a micro torch. This is to investigate the effect of wall conductivity for different operating conditions on combustion characteristics as well as flame stability. The effect of convective heat transfer coefficient on the flame stability, out of the burner, is also studied. The results show that the wall conductivity and the convective heat transfer coefficient are very important to determine heat transfer to upstream. Finally, it is observed that if intermediate conductivity value of a wall is used, it can produce more stable combustion flame. In contrary, in very low and high conductivity, the flame becomes unstable. If the convective heat transfer coefficient of the outer fluid increases, flame becomes unstable again.
VL  - 3
IS  - 1
ER  -

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Author Information

Zafar Namazian

Faculty of Engineering, Department of Mechanical Engineering, Yasouj Branch, Islamic Azad University, Yasouj, Iran
Heidar Hashemi

Department of Mechanical Engineering, College of Engineering, Yasouj University, Yasouj, Iran
Jafar Namazian

Faculty of Engineering, Department of Mechanical Engineering, Yasouj Branch, Islamic Azad University, Yasouj, Iran

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APA Style

Zafar Namazian, Heidar Hashemi, Jafar Namazian. (2015). Combustion in Micro Channel Investigating the Effect of Wall Thermal Conductivity of Micro-Channels on Flame Stability. International Journal of Science, Technology and Society, 3(1), 24-27. https://doi.org/10.11648/j.ijsts.20150301.13

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ACS Style

Zafar Namazian; Heidar Hashemi; Jafar Namazian. Combustion in Micro Channel Investigating the Effect of Wall Thermal Conductivity of Micro-Channels on Flame Stability. Int. J. Sci. Technol. Soc. 2015, 3(1), 24-27. doi: 10.11648/j.ijsts.20150301.13

Copy | Download

AMA Style

Zafar Namazian, Heidar Hashemi, Jafar Namazian. Combustion in Micro Channel Investigating the Effect of Wall Thermal Conductivity of Micro-Channels on Flame Stability. Int J Sci Technol Soc. 2015;3(1):24-27. doi: 10.11648/j.ijsts.20150301.13

Copy | Download

@article{10.11648/j.ijsts.20150301.13,
  author = {Zafar Namazian and Heidar Hashemi and Jafar Namazian},
  title = {Combustion in Micro Channel Investigating the Effect of Wall Thermal Conductivity of Micro-Channels on Flame Stability},
  journal = {International Journal of Science, Technology and Society},
  volume = {3},
  number = {1},
  pages = {24-27},
  doi = {10.11648/j.ijsts.20150301.13},
  url = {https://doi.org/10.11648/j.ijsts.20150301.13},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijsts.20150301.13},
  abstract = {In this work, the computational fluid dynamics is used to model a micro torch. This is to investigate the effect of wall conductivity for different operating conditions on combustion characteristics as well as flame stability. The effect of convective heat transfer coefficient on the flame stability, out of the burner, is also studied. The results show that the wall conductivity and the convective heat transfer coefficient are very important to determine heat transfer to upstream. Finally, it is observed that if intermediate conductivity value of a wall is used, it can produce more stable combustion flame. In contrary, in very low and high conductivity, the flame becomes unstable. If the convective heat transfer coefficient of the outer fluid increases, flame becomes unstable again.},
 year = {2015}
}

Copy | Download

TY  - JOUR
T1  - Combustion in Micro Channel Investigating the Effect of Wall Thermal Conductivity of Micro-Channels on Flame Stability
AU  - Zafar Namazian
AU  - Heidar Hashemi
AU  - Jafar Namazian
Y1  - 2015/01/23
PY  - 2015
N1  - https://doi.org/10.11648/j.ijsts.20150301.13
DO  - 10.11648/j.ijsts.20150301.13
T2  - International Journal of Science, Technology and Society
JF  - International Journal of Science, Technology and Society
JO  - International Journal of Science, Technology and Society
SP  - 24
EP  - 27
PB  - Science Publishing Group
SN  - 2330-7420
UR  - https://doi.org/10.11648/j.ijsts.20150301.13
AB  - In this work, the computational fluid dynamics is used to model a micro torch. This is to investigate the effect of wall conductivity for different operating conditions on combustion characteristics as well as flame stability. The effect of convective heat transfer coefficient on the flame stability, out of the burner, is also studied. The results show that the wall conductivity and the convective heat transfer coefficient are very important to determine heat transfer to upstream. Finally, it is observed that if intermediate conductivity value of a wall is used, it can produce more stable combustion flame. In contrary, in very low and high conductivity, the flame becomes unstable. If the convective heat transfer coefficient of the outer fluid increases, flame becomes unstable again.
VL  - 3
IS  - 1
ER  -

Copy | Download