Abstract
Flow of fluids confined in molecularly narrow pores is studied by molecular dynamics. Strong density variations across the pore render the usual dependence of the local viscosity on local density inappropriate. At separations greater than four molecular diameters flow can be described by a simple redefinition of local viscosity. In narrower pores a dramatic increase of effective viscosities is observed and is due to the inability of fluid layers to undergo the gliding motion of planar flow. This effect is partially responsible for the strong viscosity increases observed experimentally in thin films that still maintain their fluidity.
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Dates
Type | When |
---|---|
Created | 23 years, 1 month ago (July 26, 2002, 9:12 a.m.) |
Deposited | 1 year, 6 months ago (Feb. 10, 2024, 7 a.m.) |
Indexed | 2 months, 1 week ago (June 21, 2025, 5:02 a.m.) |
Issued | 34 years, 11 months ago (Sept. 1, 1990) |
Published | 34 years, 11 months ago (Sept. 1, 1990) |
Published Print | 34 years, 11 months ago (Sept. 1, 1990) |
@article{Bitsanis_1990, title={Microscopic dynamics of flow in molecularly narrow pores}, volume={93}, ISSN={1089-7690}, url={http://dx.doi.org/10.1063/1.458823}, DOI={10.1063/1.458823}, number={5}, journal={The Journal of Chemical Physics}, publisher={AIP Publishing}, author={Bitsanis, Ioannis and Somers, Susan A. and Davis, H. Ted and Tirrell, Matthew}, year={1990}, month=sep, pages={3427–3431} }