Journal
COMBUSTION EXPLOSION AND SHOCK WAVES
Volume 43, Issue 4, Pages 414-422Publisher
MAIK NAUKA/INTERPERIODICA/SPRINGER
DOI: 10.1007/s10573-007-0056-8
Keywords
two-phase flame; aluminum; aluminum nanooxide; optical characteristics; luminosity; radiative heat transfer
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The radiative characteristics of the condensed phase in the combustion zone of a laminar diffusion aluminum particle flame were studied by spectral methods. It is shown that the weak dependence of the condensed-phase temperature on the mass concentration of the fuel was due to heat losses, which increased strongly with increasing mass concentration and reached 20% of the total heat release. Strong temperature dependence of the imaginary part of the complex refractive index was obtained, which ultimately limited the flame front temperature. In practice, this should lead to a dependence of the heat losses on the condensed phase temperature stronger than T-4. The dependence of the imaginary part of the complex refractive index on the wavelength was determined experimentally at the combustion temperature.
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