Flame behavior inside constant diameter cylindrical meso­scale combustor with different backward facing step size

Authors

DOI:

https://doi.org/10.15587/1729-4061.2020.197988

Keywords:

Cylindrical Meso-Scale Combustor, Backward Facing Step, Flame Behavior, Flame Mode, Flame Mode Map

Abstract

This research observes the behavior of the flame stability in a cylindrical meso-scale combustor at various backward facing step sizes. The backward facing step was varied by changing the size of the combustor inlet diameter while the size of the combustor outlet diameter was kept constant, keeping a constant contact area. Butane gas (C4H10) was used as fuel with air as the oxidizing agent. The results show that generally, the flame mode and area of the flame mode map are obtained for the conditions of the stable flame at combustor rim, stable flame in combustor, stable flame near the step, oscillating flame, oscillating spinning flame, spinning flame, flashback, and no ignition. Flame mode and flame mode map distribution depend on reactant flow velocity behavior, jet flow generating shear stress, vortex flow regulating wall-thermal interaction, and average flow generated by varying the backward facing step size at various equivalence ratio and reactant velocity in the test range. Jet flow destructs flame stability to be extinct due to strong shear stress. Vortex flow spins the flame while the transition from jet to vortex flow oscillates the spinning flame. Weak vortex at average flow plays an important role in wall-thermal interaction that keeps flame very stable. Decreasing the backward facing step size tends to widen the flame stability region, but the combustion process causes the flame to be flashed back. By setting the reactant velocity at a small backward facing step size to the condition where the weak vortex flow exists, flashback conditions could be avoided keeping the flame very stable. Stable flame tends to be performed around stoichiometric to the lean mixture and in the low to medium reactant flow velocity. At high reactant flow velocities, the flames tend to be unstable. However, at low to medium reactant flow velocity, the flame tends to be stable in the combustor

Supporting Agencies

  • Acknowledgments are addressed to The Directorate of Research and Community Service
  • Directorate General of Research and Development Strengthening
  • Ministry of Education and Culture of the Republic of Indonesia
  • Department of Mechanical Engineering
  • Brawij

Author Biographies

Andi Sanata, Brawijaya University Jl. Mayjen Haryono, 167, Malang, Indonesia, 65145

Doctoral Student in Mechanical Engineering

Department of Mechanical Engineering

Lilis Yuliati, Brawijaya University Jl. Mayjen Haryono, 167, Malang, Indonesia, 65145

Doctorate in Mechanical Engineering

Department of Mechanical Engineering

Mega Nur Sasongko, Brawijaya University Jl. Mayjen Haryono, 167, Malang, Indonesia, 65145

Doctorate in Mechanical Engineering

Department of Mechanical Engineering

I Nyoman Gede Wardana, Brawijaya University Jl. Mayjen Haryono, 167, Malang, Indonesia, 65145

Professor in Mechanical Engineering

Department of Mechanical Engineering

References

  1. Xu, B., Ju, Y. (2007). Experimental study of spinning combustion in a mesoscale divergent channel. Proceedings of the Combustion Institute, 31 (2), 3285–3292. doi: https://doi.org/10.1016/j.proci.2006.07.241
  2. Ju, Y., Maruta, K. (2011). Microscale combustion: Technology development and fundamental research. Progress in Energy and Combustion Science, 37 (6), 669–715. doi: https://doi.org/10.1016/j.pecs.2011.03.001
  3. Chou, S. K., Yang, W. M., Chua, K. J., Li, J., Zhang, K. L. (2011). Development of micro power generators – A review. Applied Energy, 88 (1), 1–16. doi: https://doi.org/10.1016/j.apenergy.2010.07.010
  4. Mikami, M., Maeda, Y., Matsui, K., Seo, T., Yuliati, L. (2013). Combustion of gaseous and liquid fuels in meso-scale tubes with wire mesh. Proceedings of the Combustion Institute, 34 (2), 3387–3394. doi: https://doi.org/10.1016/j.proci.2012.05.064
  5. Wan, J., Shang, C., Zhao, H. (2018). Anchoring mechanisms of methane/air premixed flame in a mesoscale diverging combustor with cylindrical flame holder. Fuel, 232, 591–599. doi: https://doi.org/10.1016/j.fuel.2018.06.027
  6. Yang, W. M., Chou, S. K., Shu, C., Li, Z. W., Xue, H. (2002). Combustion in micro-cylindrical combustors with and without a backward facing step. Applied Thermal Engineering, 22 (16), 1777–1787. doi: https://doi.org/10.1016/s1359-4311(02)00113-8
  7. Maruta, K., Kataoka, T., Kim, N. I., Minaev, S., Fursenko, R. (2005). Characteristics of combustion in a narrow channel with a temperature gradient. Proceedings of the Combustion Institute, 30 (2), 2429–2436. doi: https://doi.org/10.1016/j.proci.2004.08.245
  8. Akram, M., Kumar, S. (2011). Experimental studies on dynamics of methane–air premixed flame in meso-scale diverging channels. Combustion and Flame, 158 (5), 915–924. doi: https://doi.org/10.1016/j.combustflame.2011.02.011
  9. Deshpande, A. A., Kumar, S. (2013). On the formation of spinning flames and combustion completeness for premixed fuel–air mixtures in stepped tube microcombustors. Applied Thermal Engineering, 51 (1-2), 91–101. doi: https://doi.org/10.1016/j.applthermaleng.2012.09.013
  10. Di Stazio, A., Chauveau, C., Dayma, G., Dagaut, P. (2016). Combustion in micro-channels with a controlled temperature gradient. Experimental Thermal and Fluid Science, 73, 79–86. doi: https://doi.org/10.1016/j.expthermflusci.2015.09.020
  11. Alipoor, A., Mazaheri, K. (2016). Combustion characteristics and flame bifurcation in repetitive extinction-ignition dynamics for premixed hydrogen-air combustion in a heated micro channel. Energy, 109, 650–663. doi: https://doi.org/10.1016/j.energy.2016.05.042
  12. Taywade, U. W., Deshpande, A. A., Kumar, S. (2013). Thermal performance of a micro combustor with heat recirculation. Fuel Processing Technology, 109, 179–188. doi: https://doi.org/10.1016/j.fuproc.2012.11.002
  13. Pan, J. F., Wu, D., Liu, Y. X., Zhang, H. F., Tang, A. K., Xue, H. (2015). Hydrogen/oxygen premixed combustion characteristics in micro porous media combustor. Applied Energy, 160, 802–807. doi: https://doi.org/10.1016/j.apenergy.2014.12.049
  14. Pan, J., Zhang, R., Lu, Q., Zha, Z., Bani, S. (2017). Experimental study on premixed methane-air catalytic combustion in rectangular micro channel. Applied Thermal Engineering, 117, 1–7. doi: https://doi.org/10.1016/j.applthermaleng.2017.02.008
  15. Li, Z. W., Chou, S. K., Shu, C., Xue, H., Yang, W. M. (2005). Characteristics of premixed flame in microcombustors with different diameters. Applied Thermal Engineering, 25 (2-3), 271–281. doi: https://doi.org/10.1016/j.applthermaleng.2004.06.007
  16. Xue, H., Yang, W., Chou, S. K., Shu, C., Li, Z. (2005). Microthermophotovoltaics power system for portable mems devices. Microscale Thermophysical Engineering, 9 (1), 85–97. doi: https://doi.org/10.1080/10893950590913431
  17. Baigmohammadi, M., Tabejamaat, S., Farsiani, Y. (2015). Experimental study of the effects of geometrical parameters, Reynolds number, and equivalence ratio on methane–oxygen premixed flame dynamics in non-adiabatic cylinderical meso-scale reactors with the backward facing step. Chemical Engineering Science, 132, 215–233. doi: https://doi.org/10.1016/j.ces.2015.04.008
  18. Sanata, A., Wardana, I. N. G., Yuliati, L., Sasongko, M. N. (2019). Effect of backward facing step on combustion stability in a constant contact area cylindrical meso­scale combustor. Eastern-European Journal of Enterprise Technologies, 1 (8 (97)), 51–59. doi: https://doi.org/10.15587/1729-4061.2019.149217

Downloads

Published

2020-04-30

How to Cite

Sanata, A., Yuliati, L., Sasongko, M. N., & Wardana, I. N. G. (2020). Flame behavior inside constant diameter cylindrical meso­scale combustor with different backward facing step size. Eastern-European Journal of Enterprise Technologies, 2(8 (104), 44–51. https://doi.org/10.15587/1729-4061.2020.197988

Issue

Vol. 2 No. 8 (104) (2020): Energy-saving technologies and equipment

Section

Energy-saving technologies and equipment

License

Copyright (c) 2020 Andi Sanata, Lilis Yuliati, Mega Nur Sasongko, I Nyoman Gede Wardana

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

The consolidation and conditions for the transfer of copyright (identification of authorship) is carried out in the License Agreement. In particular, the authors reserve the right to the authorship of their manuscript and transfer the first publication of this work to the journal under the terms of the Creative Commons CC BY license. At the same time, they have the right to conclude on their own additional agreements concerning the non-exclusive distribution of the work in the form in which it was published by this journal, but provided that the link to the first publication of the article in this journal is preserved.

A license agreement is a document in which the author warrants that he/she owns all copyright for the work (manuscript, article, etc.).
The authors, signing the License Agreement with TECHNOLOGY CENTER PC, have all rights to the further use of their work, provided that they link to our edition in which the work was published.
According to the terms of the License Agreement, the Publisher TECHNOLOGY CENTER PC does not take away your copyrights and receives permission from the authors to use and dissemination of the publication through the world's scientific resources (own electronic resources, scientometric databases, repositories, libraries, etc.).
In the absence of a signed License Agreement or in the absence of this agreement of identifiers allowing to identify the identity of the author, the editors have no right to work with the manuscript.
It is important to remember that there is another type of agreement between authors and publishers – when copyright is transferred from the authors to the publisher. In this case, the authors lose ownership of their work and may not use it in any way.