A COMPARATIVE INVESTIGATION OF A HIGH-VELOCITY IMPACT 
OF COSMIC BODIES UPON WATER AND GROUND

A. S. Smetannikov

UDC 533.6.01

The results of numerical simulation of the dynamics of a high-velocity 
impact upon a water surface are described in the approximation 
of two-dimensional hydrodynamics in cylindrical variables for bodies 
with dimensions, of about 1 km and impact velocities of about 50 km/sec. 
In the calculations a wide-range semiempirical equation of 
the state of water was used, with allowance for cold compression, 
phase transition into vapor, and the processes of dissociation and 
ionization. A comparison is made between calculations of an impact 
upon water and impacts upon different types of ground (gabbroid 
anorthosite, granite), which are described by both analytical equations 
of state and wide-range ones with phase transitions taken into account.

A. V. Luikov Heat and Mass Transfer Institute, National Academy 
of Sciences of Belarus, 15 P. Brovka Str., Minsk, 220072, Belarus. 
Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 80, No. 4, 
pp. 52-58, July-August, 2007. Original article submitted 
November 17, 2006.