Direct numerical simulations of a single drop in bag mode break-up

Secondary break-up consist on the decomposition of droplets, ligaments and rims into smaller droplets forming a spray. This phenomenon is driven by interface deformation given by the growth of hy- drodynamic instabilities, depending on Reynolds andWeber numbers. Bag mode break-up takes place at mode...

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Detalles Bibliográficos
Autores principales: Pairetti, César I., Márquez Damián, Santiago, Nigro, Norberto M., Zaleski, Stéphane
Formato: Objeto de conferencia Resumen
Lenguaje:Inglés
Publicado: 2017
Materias:
Ingeniería
Atomization
Drops
Break-up
Basilisk
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/103809
https://cimec.org.ar/ojs/index.php/mc/article/view/5327
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-103809
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ingeniería
Atomization
Drops
Break-up
Basilisk
spellingShingle Ingeniería
Atomization
Drops
Break-up
Basilisk
Pairetti, César I.
Márquez Damián, Santiago
Nigro, Norberto M.
Zaleski, Stéphane
Direct numerical simulations of a single drop in bag mode break-up
topic_facet Ingeniería
Atomization
Drops
Break-up
Basilisk
description Secondary break-up consist on the decomposition of droplets, ligaments and rims into smaller droplets forming a spray. This phenomenon is driven by interface deformation given by the growth of hy- drodynamic instabilities, depending on Reynolds andWeber numbers. Bag mode break-up takes place at moderate gas Weber numbers, at which the drops turns into a film and inflates. Film thickness decreases until a hole forms and expands, giving place to decomposition in smaller droplets. This mechanism is present in several break-up processes and is of great interest to understand the underlying physics of liquid atomization. In this work, we present the Direct Numerical Simulations (DNS) results of a single liquid droplet submerged in an air stream in bag mode regime. Navier-Stokes equations for the two-phase flow are solved using a Volume of Fluid with a Piecewise Linear Interface Capturing (PLIC) formulation and geometrical advection schemes on the volume fraction and momentum equations, programmed in the Basilisk suite. The deformation of the drop into a film and the posterior evolution of its thickness is studied until the formation of a hole and the results are compared with experimental data.
format Objeto de conferencia
Resumen
author Pairetti, César I.
Márquez Damián, Santiago
Nigro, Norberto M.
Zaleski, Stéphane
author_facet Pairetti, César I.
Márquez Damián, Santiago
Nigro, Norberto M.
Zaleski, Stéphane
author_sort Pairetti, César I.
title Direct numerical simulations of a single drop in bag mode break-up
title_short Direct numerical simulations of a single drop in bag mode break-up
title_full Direct numerical simulations of a single drop in bag mode break-up
title_fullStr Direct numerical simulations of a single drop in bag mode break-up
title_full_unstemmed Direct numerical simulations of a single drop in bag mode break-up
title_sort direct numerical simulations of a single drop in bag mode break-up
publishDate 2017
url http://sedici.unlp.edu.ar/handle/10915/103809
https://cimec.org.ar/ojs/index.php/mc/article/view/5327
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AT marquezdamiansantiago directnumericalsimulationsofasingledropinbagmodebreakup
AT nigronorbertom directnumericalsimulationsofasingledropinbagmodebreakup
AT zaleskistephane directnumericalsimulationsofasingledropinbagmodebreakup
bdutipo_str Repositorios
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