Aspects of stationary and dynamic micro diffuser flow

Author

Gerlach, Torsten

Author_Institution

Tech. Hochschule Ilmenau, Germany

Volume

2

fYear

1997

fDate

16-19 Jun 1997

Firstpage

1035

Abstract

The crucial points of micro diffuser flow, resulting from empirical and theoretical investigations, are presented. The central figure of merit for micro pump application is the rectification efficiency ε. It mainly depends on the aperture angle, relative diffuser length, flow velocity, and (pump) frequency. The highest (i.e. best) |ε|-value possible is around 0.25…0.4. The theoretical approach is mainly based on general investigations of energy conversion and experimental data from classical hydraulics. It matches the fluid dynamic behaviour of tested micro diffusers fairly well

Keywords

flow control; fluid dynamics; micropumps; rectification; valves; aperture angle; classical hydraulics; dynamic aspects; dynamic passive valves; energy conversion; figure of merit; flow velocity; fluid dynamic behaviour; micro diffuser flow; micro pump application; pump frequency; rectification efficiency; relative diffuser length; stationary aspects; Actuators; Apertures; Ducts; Energy conversion; Fluid dynamics; Geometry; Kinetic energy; Neck; Solid state circuits; Transducers;

fLanguage

English

Publisher

ieee

Conference_Titel

Solid State Sensors and Actuators, 1997. TRANSDUCERS '97 Chicago., 1997 International Conference on

Conference_Location

Chicago, IL

Print_ISBN

0-7803-3829-4

Type

conf

DOI

10.1109/SENSOR.1997.635362

Filename

635362