Absorption efficiencies for large spherical particles: a new approximation

An analytical study of radiation effects on the premixed laminar flames of aluminium dust clouds

“…The following are the quantities that may be computed from the Mie theory C sca = cross-section for removal of incident energy from forward beam by scattering (58) C abs = cross-section for removal of incident energy by true absorption (59) The above-mentioned cross-section depends not only on the particle size but also on the material of the particle body and state of the radiation (i.e. wavelength, polarization, and coherence [49]).…”

“…On the other hand, because of the weighting by the square of the particle volume, the distribution and magnitude of the scattered radiation may be representative of a few large particles, in some cases present in amounts of only a few particles per thousand smaller ones [57]. For a large particle size, the absorption efficiency can be obtained from the following formula [58]…”

Analytical algorithm to determine the spherical particle size distribution from spectral absorption measurements

“…This constraint implies that the reflection and refraction are negligible as a ray passes through a particle, and so can bring the convenience in mathematical treatment, but will result in a loss of accuracy. The existing methods for calculating absorption based on modification to ADT [22][23][24][25][26] generally can not be applied to the analytical inversion.…”