OATAO - Open Archive Toulouse Archive Ouverte Open Access Week

Modeling and simulation of inertial drop break-up in a turbulent pipe flow downstream of a restriction

Maniero, Riccardo and Masbernat, Olivier and Climent, Eric and Risso, Frédéric Modeling and simulation of inertial drop break-up in a turbulent pipe flow downstream of a restriction. (2012) International Journal of Multiphase Flow, vol. 42 (n° 1). pp. 1-8. ISSN 0301-9322

[img]
Preview
(Document in English)

PDF (Author's version ) - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
963kB

Official URL: http://dx.doi.org/10.1016/j.ijmultiphaseflow.2012.01.006

Abstract

This work deals with the modeling of drop break-up in an inhomogeneous turbulent flow that develops downstream of a concentric restriction in a pipe. The proposed approach consists in coupling Euler–Lagrange simulations of the drop motion to an interface deformation model. First the turbulent flow downstream of the restriction is solved by means of direct numerical simulation. Single drop trajectories are then calculated from the instantaneous force balance acting on the drop within the turbulent field (one-way coupling). Concurrently, the interface deformation is computed assuming the drop to behave as a Rayleigh–Lamb type oscillator forced by the turbulent stress along its trajectory. Criterion for break-up is based upon a critical value of drop eformation. This model has been tested against experimental data. The flow conditions and fluids properties have been chosen to match those experimental investigations. Both turbulent flow statistics and break-up probability calculations are in good agreement with experimental data, strengthening the relevance of this approach for modeling break-up in complex unsteady flow.

Item Type:Article
Additional Information:Thanks to Elsevier editor. The definitive version is available at http://dx.doi.org/10.1016/j.ijmultiphaseflow.2012.01.006
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
Laboratory name:
Statistics:download
Deposited By: Eric CLIMENT
Deposited On:07 Dec 2012 13:40

Repository Staff Only: item control page