WIT Press


Effect Of Rotor Shape On The Transient Performance Of Viscous Micropump – Numerical Study

Price

Free (open access)

Paper DOI

10.2495/AFM040421

Volume

45

Pages

10

Published

2004

Size

755 kb

Author(s)

P. Phutthavong & I. Hassan

Abstract

Industrial applications today are demanding the implementation of microelectromechanical systems (MEMS) into their products. These are mechanical devices that are able to perform work, and yet have characteristic lengths less than 1 mm. As a result, Reynolds number is typically low, which indicates the dominance of viscous forces. When a cylinder placed eccentrically inside a microchannel, where the rotor axis is perpendicular to the channel axis, a net force is transferred to the fluid due to the unequal shear stresses on the upper and lower surfaces of the rotor. Consequently, this causes the surrounding fluid in the channel to displace towards the microchannel outlet. The present numerical investigation is a comparative study of transient flow behavior in a microchannel with rotating c

Keywords