An investigation of the temperature dependence of Poiseuille numbers in microchannel flow
- 1 December 1993
- journal article
- Published by IOP Publishing in Journal of Micromechanics and Microengineering
- Vol. 3 (4) , 206-209
- https://doi.org/10.1088/0960-1317/3/4/009
Abstract
Liquid (1-, 2-propanol and 1-, 3-pentanol) flow measurements through 5, 12, and 25 mu m hydraulic diameter microchannels are reported. These experiments indicate that the Poiseuille number depends on the temperature and, possibly, on the molecular isomerism of the liquid. The Poiseuille number increases by as much as 25% and 10% for the 12 and 25 mu m channels, respectively, as the temperature increases from 0 to 85 degrees C. These results are contrary to the predictions derived from the Navier-Stokes equation, which show that the Poiseuille number is independent of these parameters. The precision of these measurements is of the order of +or-2%, so that the observed deviations from theory are not readily explained by experimental errors.Keywords
This publication has 3 references indexed in Scilit:
- Hindrance of solute diffusion within membranes as measured with microporous membranes of known pore geometryPublished by Elsevier ,2003
- Measurement of the viscosity of liquids in very thin filmsJournal of Colloid and Interface Science, 1986
- Ionic mobility in microcapillaries. A test for anomalous water structuresJournal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases, 1972