Akademik Veri Yönetim Sistemi
Advances in Computational Heat and Mass Transfer, Ali Cemal Benim,Rachid Bennacer,Abdulmajeed A. Mohamad,Paweł Ocłoń,Sang-Ho Suh,Jan Taler, Editör, Springer-Verlag , Zürich, ss.192-204, 2024
Ethylene is an important mixed product of natural gas and oil, as it
has small molecules and a simple gas-phase mechanism that can be extended to
large-molecule fuels. In our experimental studies, the radiative intensity of laminar co-flow ethylene flames was measured under air combustion conditions in
the infrared wavelength range 2.5–5 µm. These combustion experiments were
repeated several times using a burner with and without a covering of insulating
material (silica aerogel). The radiative intensity of the flame was measured over
the entire laminar flame height (5–9 cm). The flow rates (φ) of pure ethylene considered in this work were 140, 160, 180, and 194 mL/min. Based on the measured
radiative intensities, the CO2 volume fraction and temperature distributions in the
flames were investigated using particle swarm optimisation (PSO) modelling. The
two-dimensional temperature distributions and CO2 volume fractions of the flames
(194 mL/min) were also modelled using the CoFlame code for comparison. As
the flow rate of ethylene increased, the radiative intensity of CO2 also increased,
and the peak values of the CO2 intensity were in the range 4200–4350 nm. The
errors for the results calculated with PSO were less than 1% for the volume fractions of CO2 studied here. As the flame temperature decreased with increasing
flame height, the radiative intensity of CO2 also decreased. This study enables a
fundamental understanding of the structural effects of a pure ethylene flame with
a gas volume fraction of CO2 in non-premixed air combustion systems.