Conditional moment methods for polydisperse cavitating flows

dc.contributor.author Bryngelson, Spencer H.
dc.contributor.author Fox, Rodney
dc.contributor.author Colonius, Tim
dc.contributor.department Department of Chemical and Biological Engineering
dc.contributor.other Center for Multiphase Flow Research and Education
dc.date.accessioned 2022-01-05T19:12:17Z
dc.date.available 2022-01-05T19:12:17Z
dc.date.issued 2021
dc.description.abstract The dynamics of cavitation bubbles are important in many flows, but their small sizes and high number densities often preclude direct numerical simulation. We present a computational model that averages their effect on the flow over larger spatiotemporal scales. The model is based on solving a generalized population balance equation (PBE) for nonlinear bubble dynamics and explicitly represents the evolving probability density of bubble radii and radial velocities. Conditional quadrature-based moment methods (QBMMs) are adapted to solve this PBE. A one-way-coupled bubble dynamics problem demonstrates the efficacy of different QBMMs for the evolving bubble statistics. Results show that enforcing hyperbolicity during moment inversion (CHyQMOM) provides comparable model-form accuracy to the traditional conditional method of moments and decreases computational costs by about ten times for a broad range of test cases. The CHyQMOM-based computational model is implemented in MFC, an open-source multi-phase and high-order-accurate flow solver. We assess the effect of the model and its parameters on a two-way coupled bubble screen flow problem.
dc.description.comments This is a pre-print of the article Bryngelson, Spencer H., Rodney O. Fox, and Tim Colonius. "Conditional moment methods for polydisperse cavitating flows." arXiv preprint arXiv:2112.14172 (2021). Copyright 2021 The Authors. Attribution 4.0 International (CC BY 4.0). Posted with permission. </p> <br> Published as Bryngelson, Spencer H., Rodney O. Fox, and Tim Colonius. "Conditional moment methods for polydisperse cavitating flows." Journal of Computational Physics 477 (2023): 111917. https://doi.org/10.1016/j.jcp.2023.111917.
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/nrQBM5Wz
dc.language.iso en_US
dc.publisher arXiv
dc.source.uri https://arxiv.org/abs/2112.14172v1 *
dc.subject.disciplines DegreeDisciplines::Physical Sciences and Mathematics::Physics::Fluid Dynamics
dc.subject.keywords Bubbly flow
dc.subject.keywords cavitation
dc.subject.keywords population balance modeling
dc.subject.keywords quadrature-based moment methods
dc.title Conditional moment methods for polydisperse cavitating flows
dc.type Preprint
dspace.entity.type Publication
relation.isAuthorOfPublication 75da3185-b167-47f1-977f-b54aa85bd649
relation.isAuthorOfPublication 75da3185-b167-47f1-977f-b54aa85bd649
relation.isOrgUnitOfPublication 86545861-382c-4c15-8c52-eb8e9afe6b75
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