Mostrar el registro sencillo del ítem
dc.contributor.author
Fogliatto, Ezequiel Oscar
dc.contributor.author
Clausse, Alejandro
dc.contributor.author
Teruel, Federico Eduardo
dc.date.available
2021-03-22T22:02:05Z
dc.date.issued
2019-09
dc.identifier.citation
Fogliatto, Ezequiel Oscar; Clausse, Alejandro; Teruel, Federico Eduardo; Simulation of phase separation in a Van der Waals fluid under gravitational force with Lattice Boltzmann method; Emerald; International Journal of Numerical Methods for Heat & Fluid Flow ; 29; 9; 9-2019; 3095-3109
dc.identifier.issn
0961-5539
dc.identifier.uri
http://hdl.handle.net/11336/128774
dc.description.abstract
Purpose – This paper aims to assess the accuracy of Lattice Boltzmann method (LBM) for numerical simulation of the stratification of a Van der Waals (VdW) fluid subjected to a gravity field and non-uniform temperature distribution. A sensitivity analysis of the influence of the pseudopotential parameters and the grid resolution is presented. The effect of gravity force on interface densities, density profiles and liquid volume fraction is studied. Design/methodology/approach – The D2Q9 multiple-relaxation-time pseudopotential LBM for two-phase flow is proposed to simulate the phase separation. The analytical solution for density profiles in a one-dimensional problem is derived and used as a benchmark case to validate the numerical results. Findings – The numerical results reproduce the analytical density profiles with great accuracy over a wide range of simulation conditions, including variations of the gravity and temperature fields. Particularly, the numerical simulations are able to represent the effect of gravity on the existence and position of the liquid– vapor boundary of an ideal pure substance in thermodynamic equilibrium. The sensitivity of the results to variations of the calibration parameters of the VdW pseudopotential was assessed. Research limitations/implications – The numerical simulations were performed assuming a VdW fluid in a 2-D cavity with one periodic direction for which analytical solutions for benchmarking purposes are possible to obtain. Originality/value – The following fundamental question is addressed: Is the pseudopotential LBM capable of simulating accurately the liquid–vapor equilibrium under gravity forces and temperature gradients? Moreover, regarding that the pseudopotential model requires the calibration of several internal parameters to achieve thermodynamic consistency, the sensitivity of the results to variations of these parameters is assessed.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Emerald
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
PHASE CHANGE
dc.subject
GRAVITY
dc.subject
TEMPERATURE GRADIENT
dc.subject
LATTICE BOLTZMANN METHOD
dc.subject
PSEUDOPOTENTIAL
dc.subject
VAN DER WAALS
dc.subject.classification
Ingeniería Nuclear
dc.subject.classification
Ingeniería Mecánica
dc.subject.classification
INGENIERÍAS Y TECNOLOGÍAS
dc.title
Simulation of phase separation in a Van der Waals fluid under gravitational force with Lattice Boltzmann method
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2021-02-18T15:47:31Z
dc.journal.volume
29
dc.journal.number
9
dc.journal.pagination
3095-3109
dc.journal.pais
Reino Unido
dc.description.fil
Fil: Fogliatto, Ezequiel Oscar. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina
dc.description.fil
Fil: Clausse, Alejandro. Comisión Nacional de Energía Atómica; Argentina. Universidad Nacional del Centro de la Provincia de Buenos Aires. Facultad de Ciencias Exactas. Grupo de Plasmas Densos Magnetizados. Provincia de Buenos Aires. Gobernación. Comision de Investigaciones Científicas. Grupo de Plasmas Densos Magnetizados; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tandil; Argentina
dc.description.fil
Fil: Teruel, Federico Eduardo. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.journal.title
International Journal of Numerical Methods for Heat & Fluid Flow
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.emerald.com/insight/content/doi/10.1108/HFF-11-2018-0682/full/html
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1108/HFF-11-2018-0682
Archivos asociados