Математическая модель разлета осколков метеорного тела после разрушения

Математическая модель разлета осколков метеорного тела после разрушения

Инженерный журнал: наука и инновации

# 9·2017 13

Numerically simulated model of meteor body fragments

distribution after destruction

1,2,3

, F.A. Maksimov

1,2

Institute of Computer Aided Design of the Russian Academy of Sciences

(ICAD RAS), Moscow, 123056, Russia

Lomonosov Moscow State University, Moscow, 119992, Russia

Institution of the Russian Academy of Sciences

Dorodnicyn Computing Centre of RAS, Moscow, 119333, Russia

To calculate the flow-around of the meteor body fragments system, we have developed

a simulation technique based on the grid system. This method helps to consider the bo-

dies of various shapes, sizes and masses and also allows for fairly random relative body

position in the flow. It gives an opportunity to implement the algorithm of conjugating

aerodynamic and ballistic analyses. The algorithm was tested through the problem of two

identical circular cylinders dispersion, the cylinders being located on the right line per-

pendicular to the approach flow. The obtained values of the bodies dispersion speed

properly conform to the theoretical estimates. We provide recommendations for applying

the computing technique and describing the dispersion of two circular cylinders of differ-

ent sizes. The article considers the problem of two bodies’ dispersion, the bodies having

the shape of cylinder halves. It is shown that due to the hysteresis effect the bodies must

execute periodic diverging oscillations.

Keywords:

simulation, dynamics, meteor body, destruction, fragments, supersound, flying

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