Cratering of a comet nucleus by meteoroids

Computer Science

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

2

Scientific paper

The two-dimensional axisymmetric hydrocode model of free particles is applied to the calculation of response of a comet nucleus to a meteorite impact. The nucleus is assumed to be spherical with a radius of 1 km. It is composed of a porous granular mixture of water ice and of mineral. Initial temperature is 50 K. Porosity is Ψ = 0.6 and the mean density is ρ = 400 kg m-3. Impactor radius is equal to 1 m and its mean density is equal to that of the nucleus. Impact velocity is 10 km s-1. A normal impact is considered. Particular forms for the equations of state (EOS) for the real medium (water ice and rock) as well as for an artificial medium of very low-density (40 kg m-3) filling up the voids are used. The cohesion is included in the constitutive model of the constituents. Numerical modelling provides the time dependent fields of pressure, density, temperature, and particle velocity in the vicinity of an impact point. The evolution of the field of temperature correlated with the function for kinetics of amorphous to crystalline phase transition permits discussion of the impact-induced crystallization of presumably initially amorphous ice.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Cratering of a comet nucleus by meteoroids does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Cratering of a comet nucleus by meteoroids, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cratering of a comet nucleus by meteoroids will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-1184724

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.