The Effect of Oscillating Inlet Air on Temperature Distribution and NOx in Turbulent CH4-Air Combustion

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Taheri y.; RAJABI ZARGARABADI M.

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Paper Information

Journal: JOURNAL OF MECHANICAL ENGINEERING Year:2018 | Volume:48 | Issue:1 (82) Page(s): 241-249

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Title

The Effect of Oscillating Inlet Air on Temperature Distribution and NOx in Turbulent CH4-Air Combustion

Author(s)

Taheri y. | RAJABI ZARGARABADI M. | Issue Writer Certificate

Keywords

Turbulence

Probability density function

NOx

Oscillating inlet air

Abstract

In this study a two-dimensional combustion chamber was simulated to investigate the effect of Oscillating inlet air in turbulent Methane-Air diffusion flame. In this study, the velocity of inlet air to combustion chamber was oscillated in form of sinusoidal with amplitude about half of the inlet velocity in steady state and 20 Hz frequencies. The time step in numerical analysis was considered as 1/8 time in per cycle. According to considered frequency, the time step was 0. 00625s and the results was investigated after 100 and 200 complete cycles. The PDF model was used for estimate the Turbulence-combustion interaction and the turbulent behavior of streams is predicted via the standard k− ε model. The modeling of thermal formation of NOx was adopted the extended Zeldovich mechanism. The temperature distribution from PDF model has a better agreement with experimental results than Eddy dissipation model. Also the results show that using of Oscillating inlet air, in addition to increasing temperature, will cause increasing in NOx from the combustion and changing of the frequency to 50 and 100 Hz have an insignificant effects on temperature distributions.

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APA: Copy

Taheri, y., & RAJABI ZARGARABADI, M.. (2018). The Effect of Oscillating Inlet Air on Temperature Distribution and NOx in Turbulent CH4-Air Combustion. JOURNAL OF MECHANICAL ENGINEERING, 48(1 (82) ), 241-249. SID. https://sid.ir/paper/269847/en

Vancouver: Copy

Taheri y., RAJABI ZARGARABADI M.. The Effect of Oscillating Inlet Air on Temperature Distribution and NOx in Turbulent CH4-Air Combustion. JOURNAL OF MECHANICAL ENGINEERING[Internet]. 2018;48(1 (82) ):241-249. Available from: https://sid.ir/paper/269847/en

IEEE: Copy

y. Taheri, and M. RAJABI ZARGARABADI, “The Effect of Oscillating Inlet Air on Temperature Distribution and NOx in Turbulent CH4-Air Combustion,” JOURNAL OF MECHANICAL ENGINEERING, vol. 48, no. 1 (82) , pp. 241–249, 2018, [Online]. Available: https://sid.ir/paper/269847/en

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