Akademik Veri Yönetim Sistemi
INTERNATIONAL SCIENTIFIC COMPILATION RESEARCH CONGRESS-V, Ankara, Türkiye, 1 - 03 Mart 2026, ss.327-328, (Özet Bildiri)
Emissions resulting from combustion processes and the instability to ensure flame stability
create significant problems in terms of both the efficiency of combustion systems and
environmental impacts. Limiting environmentally harmful emissions such as NOx and CO
has become one of the fundamental design criteria in energy production systems, industrial
burners, and heating applications today. In addition, maintaining flame stability is necessary
while aiming for low emissions. Experimental and numerical studies aimed at improving
these problems have become a key focus of combustion research today. In this study, methane gas combustion, previously investigated experimentally in a Bunsen
type premixed burner with a 6 mm outlet diameter, was numerically modeled using ANSYS
Fluent software and validated with experimental data. Throughout the experiments, a thermal
power of 0.6 kW and an equivalence ratio of Φ=1 were kept constant, thus creating a reliable
reference data set for validating the numerical model. Following the validation study,
comprehensive numerical analyses were performed for different outlet diameters (4, 5, 7 and
8 mm) to reveal the effect of burner outlet diameter on combustion behavior. In this context,
fundamental combustion characteristics such as flame length, flame stability, and temperature
distribution have been examined in detail. Furthermore, the effects of burner diameter
variation on NOx and CO emission formation mechanisms have been evaluated. The aim of
this study is to contribute to the literature on the design and optimization of premixed
combustion systems with methane combustion, and to guide engineering applications for the
development of low-emission and high-efficiency combustion systems.