Nanotech 2002 Vol. 1
Nanotech 2002 Vol. 1
Technical Proceedings of the 2002 International Conference on Modeling and Simulation of Microsystems

Micro and Nano Fluidic Systems Chapter 2

End Effects of Rare Gas Flow in Short Channels and in Squeezed-Film Dampers

Authors: T. Veijola

Affilation: Helsinki University of Technology, Finland

Pages: 104 - 107

Keywords: end effect, rarefied gas flow, compact model, squeezed-film damper, Knudsen number

Simple approximate design formulas (+-5%) for calculating the elongation of the idealized viscous flow channel of rare gas at Knudsen numbers Kn < 100 due to the open end effects. Rectangular channels with a large aspect ratio and circular channels are discussed. The elongation model is applied to a squeezed-film damper problem and a simple design formula is presented that approximates the end effects in the damper.

ISBN: 0-9708275-7-1
Pages: 764