The Motion of Disrupted Meteoroid in the Earth's Atmosphere - 3D Simulations

Details The Motion of Disrupted Meteoroid in the Earth's Atmosphere - 3D Simulations The Motion of Disrupted Meteoroid in the Earth's Atmosphere - 3D Simulations

Mar 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996lpi....27...43a&link_type=abstract

Lunar and Planetary Science, volume 27, page 43

Computer Science

Atmospheres, Fragmentation, Meteoroids, Numerical Simulations, Shock Wave

Scientific paper

The problem of fragments interaction just after disruption of meteoroid is a fundamental item in modern meteoritics. There are some different approaches in consideration of this process. The first one is a single-body model (Zahnle, 1992; Chyba et al., 1993) treating a cloud of small fragments and vapor as a continuum. The second approach, so-called "sand bag", implies a body to be a debris cloud, composed of 10^2-10^4 particles (Teterev and Nemchinov,1993). An alternative method is the direct numerical simulation of the real flow around several large fragments. We have used rather simple and effective 3D hydrocode based upon FLIC-method to demonstrate different effects on the motion of meteoroid and radiation flux for some typical configurations. In stationary regime we have calculated the forces exerted on the body. To diminish the number of variables we have used the dimensionless parameters: drag C(sub)d, lift C(sub)l and moment C(sub)m.

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