Temperature and velocity profiles along a singular interface between two immiscible fluids

Bedeaux, Albano, and Mazur (BAM) have developed a convenient method to derive the boundary conditions for non‐equilibrium thermodynamic systems made of two bulk phases separated by a free interface. In their description, the interface is considered as a thermodynamic system characterized by its inte...

Full description

Saved in:
Bibliographic Details
Published in:Mathematical methods in the applied sciences Vol. 45; no. 2; pp. 928 - 955
Main Author: Vanhaelen, Quentin
Format: Journal Article
Language:English
Published: Freiburg Wiley Subscription Services, Inc 30.01.2022
Subjects:
Asymptotic methods
Boundary conditions
Fluid flow
Formability
Incompressible flow
Incompressible fluids
method of multiple scales
Multiscale analysis
nonlinear dynamics
non‐equilibrium thermodynamics
singular interface
solvability condition
Thermodynamic equilibrium
transport coefficients
Transport properties
Velocity distribution
ISSN:0170-4214, 1099-1476
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Bedeaux, Albano, and Mazur (BAM) have developed a convenient method to derive the boundary conditions for non‐equilibrium thermodynamic systems made of two bulk phases separated by a free interface. In their description, the interface is considered as a thermodynamic system characterized by its intensive and extensive variables. The boundary conditions describing the free interface are expressed in terms of fluxes, thermodynamic forces, and interface transport coefficients. Previous works have focused on the derivation of the generalized boundary conditions for different systems using the BAM method, but the corresponding solutions and dynamics have not been widely studied. We consider a theoretical two dimensional system made of two incompressible fluids separated by a deformable interface for which the boundary conditions are obtained using the BAM method. Ignoring the effects of external forces, the dynamics of the system is investigated using the method of multiple scales. The hierarchy of equations is solved up to the second order and we obtain conditions that must be fulfilled by the transport coefficients modeling the cross‐effects of the velocity slips and temperature jumps so that non‐trivial asymptotic solutions for the temperature and velocity profiles can be constructed.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 14
ISSN:0170-4214
1099-1476
DOI:10.1002/mma.7824