| Issue |
Eur. Phys. J. AP
Volume 13, Number 2, February 2001
|
|
|---|---|---|
| Page(s) | 147 - 152 | |
| DOI | https://doi.org/10.1051/epjap:2001126 | |
| Published online | 15 February 2001 | |
https://doi.org/10.1051/epjap:2001126
Transport within a microtube induced by a surface acoustic wave
24 Lane 260, Section 1, Muja Road, Taipei, Taiwan 11646, ROC
Received:
4
October
1999
Revised:
23
June
2000
Accepted:
17
November
2000
Published online: 15 February 2001
Continuum-mechanic derivations of the entrainment of rarefied gases induced by a surface acoustic wave (SAW) along the wall in a confined microtube are conducted by the perturbation method. Both no-slip and slip flow results are presented with the former ones matched with the previous approach by Yin and Fung. The critical reflux pressure-gradient values decrease as the Knudsen number increases from zero. Meanwhile, the (perturbed) mean flow induced by SAW along the wall of a microtube is proportional to the square of the wave-amplitude ratio which has been confirmed by previous experiments.
PACS: 47.45.-n – Rarefied gas dynamics
© EDP Sciences, 2001
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