Other
Scientific paper
Dec 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982izssr......124s&link_type=abstract
Akademiia Nauk SSSR, Izvestiia, Mekhanika Zhidkosti i Gaza, Nov.-Dec. 1982, p. 124-130. In Russian.
Other
Aerial Explosions, Earth Atmosphere, Meteorite Collisions, Spectral Emission, Tungusk Meteorite, Absorptivity, Gray Gas, Inhomogeneity, Radiative Transfer, Shock Wave Propagation
Scientific paper
An explosion simulating that of the Tunguska event is investigated with allowance for the spectral dependence of the absorption coefficients. Gas-dynamic calculations are carried out by the method of Godunov (1976) using a moving nonuniform grid and an isolated shock wave, and the results are compared with those obtained previously using a gray-gas model. It is found that the allowance for the spectral dependence of the absorption coefficients leads to a significant reduction in the amount of luminescent energy, compared with the gray-gas case. However, as in the gray-gas case, the two-dimensional effects remain rather weak, and other flow characteristics are little affected by allowing for the spectral nature of radiation.
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