Publication

On the Simulation of Acoustic Standing Waves for Microfluidic Applications with the Lattice Boltzmann Method

Nico de Rooij, Alexandra Anne Labiba Kämpfer-Homsy
2010
Posters

Abstract

In recent years, the Lattice Boltzmann Method (LBM) has been demonstrated as an interesting alternative for the simulation of complex fluid flows. Unlike finite elements models (FEM) based on a discretization of macroscopic continuum equations, the LBM is derived from microscopic models and mesoscopic kinetic equations [1]. As an increasing number of studies use acoustic standing waves for microfluidics applications [2], the LBM constitutes an efficient alternative to simulate complex interactions between fluid flows and acoustic waves. The main advantages include clear physical pictures, easy implementation of boundary conditions and a fully parallel algorithm. This paper shows results towards the implementation of LBM for the creation of acoustic standing waves in straight microchannels.

Official source

https://infoscience.epfl.ch/entities/publication/39edd691-bb6f-4305-ab1b-5a5f0ca81152

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Nico de Rooij, Alexandra Anne Labiba Kämpfer-Homsy
2010
Posters

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/39edd691-bb6f-4305-ab1b-5a5f0ca81152

About this result

Related concepts (32)

Microfluidics

Microfluidics refers to a system that manipulates a small amount of fluids ((10−9 to 10−18 liters) using small channels with sizes ten to hundreds micrometres. It is a multidisciplinary field that involves molecular analysis, biodefence, molecular biology, and microelectronics. It has practical applications in the design of systems that process low volumes of fluids to achieve multiplexing, automation, and high-throughput screening.

Fluid mechanics

Fluid mechanics is the branch of physics concerned with the mechanics of fluids (liquids, gases, and plasmas) and the forces on them. It has applications in a wide range of disciplines, including mechanical, aerospace, civil, chemical, and biomedical engineering, as well as geophysics, oceanography, meteorology, astrophysics, and biology. It can be divided into fluid statics, the study of fluids at rest; and fluid dynamics, the study of the effect of forces on fluid motion.

Non-Newtonian fluid

A non-Newtonian fluid is a fluid that does not follow Newton's law of viscosity, that is, it has variable viscosity dependent on stress. In non-Newtonian fluids, viscosity can change when under force to either more liquid or more solid. Ketchup, for example, becomes runnier when shaken and is thus a non-Newtonian fluid. Many salt solutions and molten polymers are , as are many commonly found substances such as custard, toothpaste, starch suspensions, corn starch, paint, blood, melted butter, and shampoo.

Related publications (18)

On the Simulation of Acoustic Standing Waves for Microfluidic Applications with the Lattice Boltzmann Method

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