Modeling of inertial particle flow and entry gas flow in micro-channels
Author
Rasooli, Reza
Advisor
Çetin, Barbaros
Date
2017-02Publisher
Bilkent University
Language
English
Type
ThesisItem Usage Stats
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Abstract
Micro
uidics is integration of micro-fabrication techniques together with the
knowledge of
ow behavior at micro scale to design and achieve particle manipulation,
separation, sorting and etc. which is important for biomedical and
biological applications. In this regard, analytical and numerical analysis and modeling
play an important substantial role and serve as a basis for further and better
understanding of basic and fundamental concepts and create a more transparent
picture for an optimized design with desired properties. In the present thesis, behavior
of both liquid type and gas type working
uid have been studied. For the
liquid
ow, nite Reynolds number
ow regimes which is also known as inertial
micro
uidics has been considered. Inertial micro
uidics have exhibited promising
and rigorous abilities in size based particle separation due to existence of inertial
lift force and secondary
ow (for curved channels). For the gas
ow, governing
equations of an incompressible and isothermal
ow have been analytically solved
using a linearization technique proposed in the literature for the hydrodynamic
entrance region due to its importance for excess pressure drop and heat transfer.
For this purpose, simulation of particle focusing using Lagrangian particle tracking
method has been carried out for both straight and spiral micro-channel. For
simulation authentication, experimental investigation have also performed and
compared with the simulation upshots.