Hydrodynamic properties of carbon nanotubes

Jens Honore Walther, T. Werder, R.L. Jaffe, P- Koumoutsakos

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

We study water flowing past an array of single walled carbon nanotubes using nonequilibrium molecular dynamics simulations. For carbon nanotubes mounted with a tube spacing of 16.4316.4 nm and diameters of 1.25 and 2.50 nm, respectively, we find drag coefficients in reasonable agreement with the macroscopic, Stokes-Oseen solution. The slip length is 20.11 nm for the 1.25 nm carbon nanotube, and 0.49 for the 2.50 nm tube for a flow speed of 50 m/s, respectively, and 0.28 nm for the 2.50 nm tube at 200 m/s. A slanted flow configuration with a stream- and spanwise velocity component of 100 ms21 recovers the two-dimensional results, but exhibits a significant 88 nm slip along the axis of the tube. These results indicate that slip depends on the particular flow configuration.
Original languageEnglish
JournalPhysical Review E
Volume69
Pages (from-to)062201
ISSN2470-0045
DOIs
Publication statusPublished - 2004
Externally publishedYes

Cite this

Walther, Jens Honore ; Werder, T. ; Jaffe, R.L. ; Koumoutsakos, P-. / Hydrodynamic properties of carbon nanotubes. In: Physical Review E. 2004 ; Vol. 69. pp. 062201.
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Hydrodynamic properties of carbon nanotubes. / Walther, Jens Honore; Werder, T.; Jaffe, R.L.; Koumoutsakos, P-.

In: Physical Review E, Vol. 69, 2004, p. 062201.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Hydrodynamic properties of carbon nanotubes

AU - Walther, Jens Honore

AU - Werder, T.

AU - Jaffe, R.L.

AU - Koumoutsakos, P-

PY - 2004

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N2 - We study water flowing past an array of single walled carbon nanotubes using nonequilibrium molecular dynamics simulations. For carbon nanotubes mounted with a tube spacing of 16.4316.4 nm and diameters of 1.25 and 2.50 nm, respectively, we find drag coefficients in reasonable agreement with the macroscopic, Stokes-Oseen solution. The slip length is 20.11 nm for the 1.25 nm carbon nanotube, and 0.49 for the 2.50 nm tube for a flow speed of 50 m/s, respectively, and 0.28 nm for the 2.50 nm tube at 200 m/s. A slanted flow configuration with a stream- and spanwise velocity component of 100 ms21 recovers the two-dimensional results, but exhibits a significant 88 nm slip along the axis of the tube. These results indicate that slip depends on the particular flow configuration.

AB - We study water flowing past an array of single walled carbon nanotubes using nonequilibrium molecular dynamics simulations. For carbon nanotubes mounted with a tube spacing of 16.4316.4 nm and diameters of 1.25 and 2.50 nm, respectively, we find drag coefficients in reasonable agreement with the macroscopic, Stokes-Oseen solution. The slip length is 20.11 nm for the 1.25 nm carbon nanotube, and 0.49 for the 2.50 nm tube for a flow speed of 50 m/s, respectively, and 0.28 nm for the 2.50 nm tube at 200 m/s. A slanted flow configuration with a stream- and spanwise velocity component of 100 ms21 recovers the two-dimensional results, but exhibits a significant 88 nm slip along the axis of the tube. These results indicate that slip depends on the particular flow configuration.

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