Treffer: Analysis of fluid flow through micro-fluidic devices using characteristic-based-split procedure

Title:
Analysis of fluid flow through micro-fluidic devices using characteristic-based-split procedure
Authors:
CELIK, Bayram, EDIS, Firat Oguz
Source:
Finite element for flow problems (FEF) 2005: Part 1International journal for numerical methods in fluids. 51(9-10):1041-1057
Publisher Information:
Chichester: Wiley, 2006.
Publication Year:
2006
Physical Description:
print, 17 ref
Original Material:
INIST-CNRS
Subject Terms:
Mechanics acoustics, Mécanique et acoustique, Sciences exactes et technologie, Exact sciences and technology, Physique, Physics, Domaines classiques de la physique (y compris les applications), Fundamental areas of phenomenology (including applications), Mécanique des fluides, Fluid dynamics, Méthodes de calcul en mécanique des fluides, Computational methods in fluid dynamics, Mécanique des fluides appliquée, Applied fluid mechanics, Fluidique, Fluidics, Algorithme, Algorithms, Condition aux limites, Boundary conditions, Ecoulement gaz raréfié, Rarefied gas flow, Equation Navier Stokes, Navier-Stokes equations, Fluide compressible, Compressible fluid, Fluido compresible, Génération maille, Mesh generation, Microfluidique, Microfluidics, Mécanique fluide numérique, Computational fluid dynamics, Saut température, Temperature jump, Salto temperatura, Simulation numérique, Digital simulation, Vitesse glissement, Slip velocity, characteristic-based-split (CBS) algorithm, compressible flow, microflow, rarefied flow, slip-velocity, temperature-jump
Document Type:
Konferenz Conference Paper
File Description:
text
Language:
English
Author Affiliations:
Faculty of Aeronautics and Astronautics, Istanbul Technical University, Maslak, Istanbul 34469, Turkey
ISSN:
0271-2091
Access URL:
http://pascal-francis.inist.fr/vibad/index.php?action=search&terms=17957766
Rights:
Copyright 2006 INIST-CNRS
CC BY 4.0
Sauf mention contraire ci-dessus, le contenu de cette notice bibliographique peut être utilisé dans le cadre d’une licence CC BY 4.0 Inist-CNRS / Unless otherwise stated above, the content of this bibliographic record may be used under a CC BY 4.0 licence by Inist-CNRS / A menos que se haya señalado antes, el contenido de este registro bibliográfico puede ser utilizado al amparo de una licencia CC BY 4.0 Inist-CNRS
Notes:
Physics: fluid mechanics
Accession Number:
edscal.17957766
Database:
PASCAL Archive

Weitere Informationen

Gas flow in micro-electro-mechanical systems can be considered as rarefied since the ratio of free molecular path length to the characteristic length of the device is high. It is possible to analyse these flows using a conventional Navier-Stokes solver with modified boundary conditions to account for temperature-jump and slip-velocity on solid walls. In this study, characteristic-based-split (CBS) algorithm is modified to account for slip-velocity and temperature-jump boundary conditions in order to perform compressible flow analysis for a micro sized geometry. The CBS algorithm is a split procedure which yields a unified solution method valid for both compressible and incompressible flows. To verify the modified CBS solver, straight micro channel and micro step duct geometries are selected as test cases. To reduce the size of the implicit part of the algorithm, pseudo-quadratic velocity/linear pressure elements (pP2Pl) are employed. The results obtained using CBS algorithm, are compared with other analytical and computational results available in the literature. It is shown that this implementation of the CBS algorithm is applicable and effective for micro gas flows. It is also shown that, increasing Knudsen number results in increased temperature-jump and slip-velocity. This effect, however, is limited, especially for high Mach number flows.