The Blast Wave Produced by Bursting Spheres With Simultaneous or Delayed Explosion or Implosion of The Contents

This dissertation consists of a systematic study to determine the structure of blast waves generated by a variety of non-ideal energy sources. The energy sources considered included bursting spheres, centrally initiated spherical explosions, edge initiated spherical implosions and combinations of the above with and without ignition delays. Although the combustion process was modeled after methane combustion, the technique for generalizing to other fuels was presented. The Oppenheim CLOUD computer program with appropriate energy source terms was used to perform all the calculations. The bursting sphere energy density was systematically varied with the energy density of methane being included in the energy densities considered. This enabled the comparison between the blast waves generated by a bursting sphere and other energy sources. The effective normal burning velocity for the explosion and implosion cases was varied to include a range of velocities from very low flame velocities up to detonation causing velocities. Flame acceleration processes were also carefully simulated. Details of the blast structure for all the cases considered was provided.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Aeronautical and Astronautical Engineering

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2014

Author dc:creator

• Shimpi, Shirish Ambadas

• Engineering, Aerospace

Language dc:language

eng

Identifier

(UMI)AAI8017983

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/67473