Unstructured grid simulations of shocks and detonations in two-phase flows

A series of numerical simulations have been made of compressible two-phase flows containing inert particles. An existing conservative, monotonic compressible flow solver with an unstructured, adaptive mesh was used as the basis for code development. This flow solver incorporated the Finite Element Method-Flux Corrected Transport scheme, which has shown excellent predictive capability of various compressible flows which include both strong and weak shocks. Two separate two-phase flow techniques have been added to this solver to allow simulations of both Eulerian-Eulerian treatment and Eulerian-Lagrangian treatment. Both methods were used to study one-dimensional shock wave attenuation in two-phase flow containing gas and particles. The results show good agreement with experiment for both methods. The Lagrangian particle method tracked groups of particles as parcels and implemented a parcel adaptation method to ensure adequate parcel distribution throughout the adaptive mesh. This resulted in very large savings in CPU and memory requirements as compared to a conventional (non-parcel-adaptive) Lagrangian technique. The Eulerian particle method was found to produce cleaner solutions and required about half the memory and CPU time as the Lagrangian particle method.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Aerospace Engineering

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2011

Author dc:creator

• Sivier, Steven Arthur

Contributors dc:contributor

• Loth, Eric

• Engineering, Aerospace
• Engineering, Mechanical

Statement dc:rights

• Copyright 1995 Sivier, Steven Arthur

Language dc:language

eng

Identifier

AAI9543727
(UMI)AAI9543727

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/19616