NUMERICAL SIMULATION OF EXPLOSIVE
VOLCANIC ERUPTION IN THE INITIAL STAGE

N. A. Kudryashov,a G. S. Romanov,b
and A. F. Shevyakova

UDC 519.6

In an approximation of the two-dimensional dynamics of 
a monodisperse collisionless gas suspension, the initial stage of 
explosive volcanic eruption is modeled. Plots of the amplitude of 
a shock wave versus the distance in the initial stage are constructed. 
The general picture of change in the dust concentration near a volcano 
crater is given. The dependence of the height of a gas-dust column 
on the explosion energy and the dynamics of ash ejection on volcanic 
eruption are investigated.

aMoscow Engineering Physics Institute (Technical 
University), Moscow, Russia; bA. V. Luikov Heat and Mass Transfer 
Institute, National Academy of Sciences of Belarus, Minsk, Belarus. 
Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 75, No. 3, pp. 
3-8, May-June, 2002. Original article submitted October 15, 2001.

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