NUMERICAL STUDY OF ASTEROID IMPACT
ON THE EARTH'S SURFACE WITH ALLOWANCE
FOR GRAVITATION AND RADIATION ENERGY TRANSFER

G. S. Romanov and A. S. Smetannikov

UDC 533.6.01

The study presents a procedure for numerical modeling 
and results of gasdynamic calculations of asteroid impact on the surface 
in a two-dimensional axisymmetric formulation for impact velocities 
of ~50 km/sec and asteroid dimensions of ~1 km. The effect of gravity 
and radiation energy transfer are taken into account. Radiation transfer 
is calculated using the equations of radiation diffusion in the multigroup 
approximation with respect to the photon energy (10 spectral groups). 
The equations of radiation diffusion are solved by the method of alternating 
directions.

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