The
butanol isomers n-butanol and isobutanol as
well as ethanol are among the biofuels most likely to be used for
engine combustion and are likely to become more relevant as surrogate
fuels or blend components in the future. To use the potentials of
alternative fuels, the combustion mechanisms and, thus, burning behavior
should be known. A key parameter for flame kinetic studies and combustion
simulation is the laminar burning velocity. However, reproducible
measurements of flame speeds of gasified liquid fuels are difficult.
To reduce the scattering of experimental results to acceptable levels,
there is a common research interest of several European institutes
using so-called heat flux burners. In this work, a self-designed liquid
fuel evaporation system has been combined with a precise droplet generator,
which allows for measurements of adiabatic laminar burning velocity
at elevated gas temperatures. The one-dimensional (1D) flame appears
very stable, even close to its flammability limits. The boundary conditions
are chosen to model exhaust gas recirculation (EGR) with different
temperatures and compositions of the mixtures. The measurement data
are compared to the corresponding results of other research groups,
and the uncertainty of the burning velocity is estimated.
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