Abstract
In the present study, time-dependent numerical analysis of methane-air
counterflow diffusion flame into a selected macro/micro open channel is
investigated. The flame is simulated by multi and single-step reaction
approaches into an open channel with a constant distance of 15 mm
between air and the fuel inlet, and a hydraulic distance at the order of
0.1 mm. To solve the unsteady problem, a coupled pressure-velocity
implicit division method is considered. The results show an acceptable
agreement between numerical and experimental data that confirm the
accuracy of the model. The results also revealed that the variation of
the residence time to the inlet velocity is more sensitive than the
inlet temperature. It is also found that at the larger inlet velocities,
the flame is stabilized at a smaller value of hydraulic distance. This
is a result of increasing the possibility of reactions between species.
The generation rates of CO2, CO and H2O species are found to be nearly constant at t > 0.009s while for NO and NO2 species the rates remain unchanged at t > 0.013s and t > 0.016s, respectively.
Original language | English |
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Article number | 100603 |
Pages (from-to) | 1-10 |
Number of pages | 10 |
Journal | Case Studies in Thermal Engineering |
Volume | 18 |
DOIs | |
Publication status | Published - Apr 2020 |
Bibliographical note
Copyright the Author(s) 2020. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.Keywords
- Counterflow diffusion flame
- Detailed mechanisms
- Time-dependent model
- Micro/macro open channel