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Numerical Modeling and Analysis of Early Shock Wave Interactions with a Dense Particle Cloud

Regele, J. D. and Rabinovitch, J. and Colonius, T. and Blanquart, G. (2012) Numerical Modeling and Analysis of Early Shock Wave Interactions with a Dense Particle Cloud. In: 42nd AIAA Fluid Dynamics Conference and Exhibit, 25-28 June 2012, New Orleans, LA.

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Dense compressible multiphase flows exist in variable phase turbines, explosions, and fluidized beds, where the particle volume fraction is in the range 0.001 < α_d < 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.

Item Type:Conference or Workshop Item (Paper)
Related URLs:
URLURL TypeDescription Paper Paper
Rabinovitch, J.0000-0002-1914-7964
Colonius, T.0000-0003-0326-3909
Blanquart, G.0000-0002-5074-9728
Additional Information:© 2012 by Jonathan Regele. Published by the American Institute of Aeronautics and Astronautics, Inc., with permission. Published Online: 6 Sep 2012. The authors would like to thank Karen Oren for her contribution to this work.
Subject Keywords:Fluid Dynamics
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Other Numbering System NameOther Numbering System ID
AIAA Paper2012-3161
Record Number:CaltechAUTHORS:20190712-112323497
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:97128
Deposited By: Melissa Ray
Deposited On:16 Jul 2019 16:42
Last Modified:16 Nov 2021 17:26

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