@Article{fdmp.2023.026238,
AUTHOR = {Naima Krarraz, Amina Sabeur, Khadidja Safer, Ahmed Ouadha},
TITLE = {Numerical Simulation of Turbulent Diffusion Flames of a Biogas Enriched with Hydrogen},
JOURNAL = {Fluid Dynamics \& Materials Processing},
VOLUME = {20},
YEAR = {2024},
NUMBER = {1},
PAGES = {79--96},
URL = {http://www.techscience.com/fdmp/v20n1/54541},
ISSN = {1555-2578},
ABSTRACT = {Any biogas produced by the anaerobic fermentation of organic materials has the advantage of being an environmentally friendly biofuel. Nevertheless, the relatively low calorific value of such gases makes their effective utilization in practical applications relatively difficult. The present study considers the addition of hydrogen as a
potential solution to mitigate this issue. In particular, the properties of turbulent diffusion jet flames and the
related pollutant emissions are investigated numerically for different operating pressures. The related numerical
simulations are conducted by solving the RANS equations in the frame of the Reynolds Stress Model in combination with the flamelet approach. Radiation effects are also taken into account and the combustion kinetics are
described via the GRI-Mech 3.0 reaction model. The considered hydrogen fuel enrichment spans the range from
0% to 50% in terms of volume. Pressure varies between 1 and 10 atm. The results show that both hydrogen addition and pressure increase lead to an improvement in terms of mixing quality and have a significant effect on
flame temperature and height. They also reduce CO<sub>2</sub> emissions but increase NOx production. Prompt NO is
shown to be the predominant NO formation mechanism.},
DOI = {10.32604/fdmp.2023.026238}
}