Numerical study of asteroid impact on the earth’s surface with allowance for gravitation and radiation energy transfer

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.[PUBLICATION ABSTRACT]