Modares Mechanical Engineering

Modares Mechanical Engineering

Investigation of radiative heat transfer effect on the SM1 flame structure with steady flamelet method

Authors
Farhad Fasihi 1
Sahar Noori 2
Masoud Eidi Attarzadeh 3
1 Aerospace engineering, Aerospace faculty, Amirkabir University of Technology, Tehran, Iran
2 Aerospace Engineering department, Aerospace Engineering faculty, Amirkabir University of Technology, Tehran, Iran
3 Aerospace Engineering, Aerospace Engineering Faculty, Amirkabir University of Technology, Tehran, Iran
Abstract
Abstract Thermal radiation plays a key role in the heat transfer between the flame and its surroundings. It is essential to provide a reliable method for measurement of flame radiation in the combustion study. Also, it is challenging to measure the radiation flux from the flame in the chamber due to the effect of the walls. The radiation emitted from the walls and the reflection of the flame radiation from the walls interferes with the measurement of the flame radiation. High temperature or high reflection walls can increase the error in the measurement of flame radiation. In this paper, various parameters affecting the flame radiation have been investigated. These studies are based on the wall incident radiation and the wall radiation heat flux. To calculate the flame radiation, a theoretical method is presented which is compared with the CFD simulation results to confirm its correctness. To simulate the flame SM1 of the University of Sydney, a steady flamelet combustion model has been used with the k-ε modified turbulence model. Due to the low optical thickness of the model, the DO radiation model is used to simulate CFD. The CFD results are in good agreement with theoretical results, and the estimation of flame emission are accurately acceptable. The results show that the flame radiation differs from the wall radiation by more than 25%, when the wall radiation coefficient will be smaller than 0.8 or the wall temperature will be more than 330k.
Keywords
Flame radiation
Radiative heat flux
Wall incident radiation
SM1 Burner
DO radiation model

Subjects

[1] C Tien, S Lee. Flame radiation. Prog Energy Combust Sci 1982;8:pp.41–59.
[2] R Viskanta, M Mengüç. "Radiation heat transfer in combustion systems.", Progress in Energy and Combustion Science 1987.
[3] K Zhou, N Liu, L Zhang, K Satoh. "Thermal radiation from fire whirls: revised solid flame model.", Fire Technol 2014;50:pp.1573–87.
[4] ES Oran, JP Boris. "Detailed modelling of combustion systems."Prog Energy Combust Sci 1981;7:1–72.
[5] P Nakod, G Krishnamoorthy, M Sami, S Orsino. "A comparative evaluation of gray and non-gray radiation modeling strategies in oxy-coal combustion simulations.", Appl Therm Eng 2013;54:pp.422–32.
[6] AA Bhuiyan, J Naser. "Numerical modelling of oxy fuel combustion, the effect of radiative and convective heat transfer and burnout.", Fuel 2015;139:pp.268–84.
[7] F Xia, Z Yang, A Adeosun, BM Kumfer, RL Axelbaum. "Staged, pressurized oxy-combustion: computational fluid dynamic simulations z boilers. ", The 8th international symposium on coal combustion Beijing,China; 2015.
[8] J Zhang, T Ito, S Ito, D Riechelmann, T Fujimori. "Numerical investigation of oxycoal combustion in a large-scale furnace: non-gray effect of gas and role of particle radiation.", Fuel 2015;139:pp.87–93.
[9] D Woycenko, W Van de Kamp, P Roberts. "Combustion of pulverized coal in a mixture of oxygen and recycled flue gas. ", Summary of the APG research program, IFRF Doc, in, F98/Y/4. Ijmuiden, The Netherlands: International Flame Research Foundation (IFRF); 1995.
[10] B Kashir, S Tabejamaat, and N Jalalatian. "A numerical study on combustion characteristics of blended methane-hydrogen bluff-body stabilized swirl diffusion flames.", International Journal of Hydrogen Energy 40.18 (2015):pp. 6243-6258.
[11] F Fasihi,S Noori, M Eidi Attar Zade. "Study Of Jet Velocity Effect On SM1 Flame Configuration With Steady Flamelet.", the 16th international conference of Iranian Aerospace Society (Feb2017) (in Persian فارسی).
[12] P.A.M. Kalt, Y.M. Al-Abdeli, A.R Masri, and R.S. Barlow, "Swirling Turbulent Non-premixed Flames of Methane: Flowfield and Compositional Structure", Proc. Combust. Inst. 29:pp.1913-1919,(2002). www.sydney.edu.au/engineering/aeromech/thermofluids/swirl.htm
[13] N. Peters, "Laminar Diffusion Flamelet Models in Non-premixed Turbulent Combustion", Energy Combust Sci, 3, 1984, pp. 319-339.
[14] F Chitgarha1, M Davazdah Emami and M Farshchi, "Simulation of a CH4/H2 Diffusion Flame using Unsteady and Steady Flamelet Combustion Models" Fuel and Combustion Scientific Research Journal, Vol. 8, NO. 2, Tehran, Iran, (2015).(in persian فارسی)
[15] Robert Siegle; John.R Howel; "Thermal Radiation Heat Transfer", Lewis research Center ,Government printing Office,Washington, NASA SP- 164, Vol.3,1971
[16] FP Incropera. Fundamentals of heat and mass transfer. John Wiley & Sons;2011.
[17] Zhiwei Yang, Adewale Adeosun, Benjamin M. Kumfer, Richard L. Axelbaum, "An approach to estimating flame radiation in combustion chambers containing suspended-particles",Fuel,2017.
https://doi.org/10.1016/j.fuel.2017.02.083
[18] http://web.aeromech.usyd.edu.au/thermofluids/swirl.php
Modares Mechanical Engineering
Volume 18, Issue 7
November 2018
Pages 20-29