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A comparison of ensemble- and volume-averaged bubbly flow models

Bryngelson, Spencer H. and Colonius, Tim (2019) A comparison of ensemble- and volume-averaged bubbly flow models. In: 10th International Conference on Multiphase Flow, 19-24 May 2019, Rio de Janeiro, Brazil.

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We compare volume- and ensemble-averaged bubbly flow models. Volume-averaging is a deterministic process for which bubbles are represented in a Lagrangian framework as advected particles, each sampled from a distribution of equilibrium bubble sizes. Ensemble-averaging instead uses mixture-averaged equations in an Eulerian reference frame for the associated bubble properties, each represented by bins of the equilibrium distribution. In both cases, bubbles are modeled as spherical with dynamics governed by the Keller-Miksis equation. Computationally, there are tradeoffs between these two approaches. Here, we simulate an acoustically excited dilute bubble screen and compare the computational efficiency of the two approaches.

Item Type:Conference or Workshop Item (Paper)
Bryngelson, Spencer H.0000-0003-1750-7265
Colonius, Tim0000-0003-0326-3909
Additional Information:The authors would like to thank Kevin Schmidmayer for fruitful discussions. This work was supported in part by the Office of Naval Research under grant N0014-17-1-2676.
Funding AgencyGrant Number
Office of Naval Research (ONR)N0014-17-1-2676
Subject Keywords:Bubble dynamics, cavitation, multiphase flow modeling, compressible flow
Record Number:CaltechAUTHORS:20190709-092059850
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:96961
Deposited By: Melissa Ray
Deposited On:10 Jul 2019 22:30
Last Modified:03 Oct 2019 21:27

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