Conclusions
- Fuel consumption, heat release, and rise in temperature occur in a narrow region.
- NO and N2O concentration increases with temperature. Thus, NO is concentrated in high temperature regions post-flame and can be reduced by controlling the rate of temperature rise.
- CO profile changes drastically from lean to rich compositions and its concentration remains high even in the post-flame region for rich mixtures.
- Burning velocity first increases from lean to stoichiometric becomes maximum at Φ ~ 1.1 and decreases continuously thereafter. Moreover, computed burning velocity matches well with the experimental data.
- Heat release rate also follows the same trend; starts low from lean, increases for stoichiometric, and reduces for rich flame.
- Numerical experimentation complements the physical experiments. One cannot rely on either of them while studying a certain problem.
© Virtual Combustion and Atomization Lab, IIT Kanpur