Numerical modeling and analysis of early shock wave interactions with a dense particle cloud

J. D. Regele, J. Rabinovitch, T. Colonius, G. Blanquart

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Scopus citations

Abstract

Dense compressible multiphase flows exist in variable phase turbines, explosions, and fluidized beds, where the particle volume fraction is in the range 0.001 < αd < 0.5. A simple model problem that can be used to study modeling issues related to these types of flows is a shock wave impacting a particle cloud. In order to characterize the initial shock-particle interactions when there is little particle movement, a two-dimensional (2-D) model problem is created where the particles are frozen in place. Qualitative comparison with experimental data indicates that the 2-D model captures the essential flow physics. Volume-averaging of the 2-D data is used to reduce the data to one dimension, and x-t diagrams are used to characterize the flow behavior. An equivalent one-dimensional (1-D) model problem is developed for direct comparison with the 2-D model. While the 1-D model characterizes the overall steady-state flow behavior well, it fails to capture aspects of the unsteady behavior. As might be expected, it is found that neglecting the unclosed fluctuation terms inherent in the volume-averaged equations is not appropriate for dense gas-particle flows.

Original languageEnglish
Title of host publication42nd AIAA Fluid Dynamics Conference and Exhibit 2012
DOIs
StatePublished - 2012
Event42nd AIAA Fluid Dynamics Conference and Exhibit 2012 - New Orleans, LA, United States
Duration: 25 Jun 201228 Jun 2012

Publication series

Name42nd AIAA Fluid Dynamics Conference and Exhibit 2012

Conference

Conference42nd AIAA Fluid Dynamics Conference and Exhibit 2012
Country/TerritoryUnited States
CityNew Orleans, LA
Period25/06/1228/06/12

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