Micro & Bio Fluidics, Lab-on-Chip – Page 58

Modeling and Validation of Flow-Structure Interactions in Passive Micro Valves

Oosterbroek R.E., Schlautmann S., Berenschot J.W., Lammerink T.S.J., van den Berg A., Elwenspoek M.C., University of TWente, NL

This paper reports the modeling of the stationary flow-structure interaction of different types of micro check valves. Mathematical indirect, domain coupled and decoupled, finite element models as well as analytical approximations are made. The obtained [...]

Modeling 3-D Fluid Flow for a MEMS Laminar Proportional Amplifier

Athavale M.M., Li H.Y., Przekwas A.J., Piekarski B.H., Zeto R.J., Tenney S.M., CFD Research Corporation, US

Fluid flow in a microfluidic laminar proportional amplifier (LPA) was simulated using an advanced 3-D flow solver, CFD-ACE+. Pressure gains for single-stage and two-stage blocked output LPAs were calculated under a variety of flow conditions [...]

Modeling Strategies for Microsystems

Voigt P., Schrag G., König E-R, Wachutka G., Technical University of Münich, DE

A hierarchical approach to microsystem modeling is outlined. On the device level, the operating behavior is analyzed on the basis of continuous field models To deal with the coupling effects typical of microsystems, various coupling [...]

Modeling of a Piezo Paddle Mikro Pump

Ederer I., Technical University of Münich, DE

In this paper an analytical method will be presentea to describe the behavior of a piezo electric paddle pump. For that, mechanical and fluidic mechanism are combined in a one mass oscillator model with fluidic [...]

Modeling and Design Optimization of a Novel Micropump

Klein A., Matsumoto S., Gerlach G., Dresden University of Technology, DE

The purpose of this paper is to give an overview about the design process of a new-type micropump. Four different coupled physical domains must be considered. The coupling effects on the pysical level are modeled [...]

Computational Modeling of Microfluid Devices with Free Surface Liquid Handling

Yang H.Q., Przekwas A.J., CFD Research Corporation, US

Integrated Microfluidic Systems are the subject of great scientific and commercial interest for a wide range of applications, including the biomedical, environmental, automotive, aerospace, and defense. This paper presents the computational methodology used in the [...]

Finite Element Approach for Reactive Microfluidic Devices

Hsing I-M, Srinivasan R., Jensen K.F., Schmidt M.A., Hong Kong University of Science and Technology, HK

We report a finite element method (FEM) based model for simulating microfluidic devices with chemical reactions. The simulation approach incorporates a general mesh generation procedure, which allows us to explore different application-oriented designs of microfluidic [...]

Unsteady Gaseous Flows in Tapered Microchannels

Aubert C., Colin S., Caen R., Laboratoire de Genie Mecanique de Toulouse, FR

The aim of the paper is to contribute to the modeling of unsteady slip flows in rectangular microchannels with slowly varying cross-sections. A model is proposed for a microdiffuser submitted to sinusoidal pressure fluctuations at [...]

Computational Two-Dimensional Finite-Element Analysis of Flow Behavior Inside Microfluidic Amplifiers

Simões E.W., Furlan R., Zemel J.N., Escola Politecnica da Universidade de Sao Paulo, BR

Two-dimensional finite-element analysis was conducted using the commercial ANSYS (FLOTRAN) package to investigate nitrogen flow inside of two types of microfluidic amplifiers (wall attachment and jet deflection). Our simulations demonstrate that for supply pressures higher [...]

Squeeze Film Damping Effect on the Dynamic Response of a MEMS Torsion Mirror

Pan F., Kubby J., Peeters E., Tran A.T., Mukherjee S., XEROX, Xerox Wilson Research Center, US

Analytical formulae for the squeeze film darnping torque on a MEMS torsion mirror are derived based on series solutions to the linearized Reynold's equation. The derivation is carried out under the assumption that the angular [...]