DOI: 10.1615/ICHMT.2007.RadTransfProc
ISBN Print: 978-1-56700-243-0
ISSN Online: 2642-5629
ISSN Flash Drive: 2642-5661
THERMAL RADIATION OF NONISOTHERMAL PARTICLES IN COMBINED HEAT TRANSFER PROBLEMS
ABSTRAKT
Thermal radiation of large semi-transparent spherical particles is modeled on the basis of differential approximation suggested earlier by the author. This approach is employed to solve transient radiative-conductive problems for nonisothermal particles. Two applied problems for metal oxide particles are considered: the diagnostics of particle temperature in plasma spraying and solidification of core melt droplets during fuel-coolant interaction. It is shown that effect of particle semi-transparency in the near-infrared spectral range may be significant for both thermal radiation intensity and the physical picture of the particle solidification.