Skip to main content Accessibility help
×
Home

Porosity models for pre-planetesimals: modified P-α like models and the effect of dissipated energy

  • Serena E. Arena (a1) and Roland Speith (a2)

Abstract

The outcome of collisions between pre-planetesimals is important in the theory of planetesimal formation by collisional growth and strongly depends on their internal structure. Since pre-planetesimals are highly porous, reaching 90% porosity, they could show the so called anomalous behaviour (decrease of density during shock compression, e.g. Bolkhovitinov & Khvostov 1978). Due to involved sizes (>dm), laboratory experiments are unfeasible therefore numerical simulations equipped with adequate porosity models are necessary.

Here we focus on the P-α model and its variations. We found that they are suitable for applications in the high porosity range only after a modification of the basic equations, that avoids an inconsistency and takes into account the effect of dissipated energy, is performed.

    • Send article to Kindle

      To send this article to your Kindle, first ensure no-reply@cambridge.org is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about sending to your Kindle. Find out more about sending to your Kindle.

      Note you can select to send to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be sent to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.

      Find out more about the Kindle Personal Document Service.

      Porosity models for pre-planetesimals: modified P-α like models and the effect of dissipated energy
      Available formats
      ×

      Send article to Dropbox

      To send this article to your Dropbox account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Dropbox.

      Porosity models for pre-planetesimals: modified P-α like models and the effect of dissipated energy
      Available formats
      ×

      Send article to Google Drive

      To send this article to your Google Drive account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Google Drive.

      Porosity models for pre-planetesimals: modified P-α like models and the effect of dissipated energy
      Available formats
      ×

Copyright

References

Hide All
Bolkhovitinov, L. G. & Khvostov, Y. B., 1978, Nature, 274, 882
Herrmann, W. 1969, Journal of Applied Physics, 40, 2490
Carroll, M. & Holt, A. C., 1972, Journal of Applied Physics, 43, 759
Jutzi, M., Benz, W., & Michel, P., 2008, Icarus, 198, 242
Wünnemann, K., Collins, G. S., & Melosh, H. J., 2006, Icarus, 180, 514
MathJax
MathJax is a JavaScript display engine for mathematics. For more information see http://www.mathjax.org.

Keywords

Porosity models for pre-planetesimals: modified P-α like models and the effect of dissipated energy

  • Serena E. Arena (a1) and Roland Speith (a2)

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed