Eur. Phys. J. AP
Volume 18, Number 1, April 2002
|Page(s)||51 - 56|
|Section||Plasma, Discharges and Processes|
|Published online||15 April 2002|
Transport induced by a surface acoustic wave along a slab
Department of Physics, Northwest Normal University, Gansu, Lanzhou
730070, PR China
Corresponding author: email@example.com
Revised: 21 January 2002
Accepted: 24 January 2002
Published online: 15 April 2002
The transport of non-equilibrium gases in the flow regime of slightly rarefied gas dynamics within a plane channel bounded by two parallel slabs is addressed. Hydrodynamic derivation of the entrainment of rarefied gases induced by a surface acoustic wave (SAW) along the walls in a confined parallel-plane microchannel is conducted by considering the nonlinear coupling between the interface and the velocity-slip. Both no-slip and slip flow results are obtained with the former ones matched with the previous approach. The critical reflux values associated with the product of the second order pressure-gradient and the Reynolds number decrease as the Knudsen number increases from zero to 0.1. We found when the Reynolds number is larger the surface wave-modulation effect (due to the wave number) to the flow field is significant which represents the strong coupling between the boundary and the flow-inertia term. Meanwhile, the (perturbed) mean flow induced by SAW along the walls of a 2D microchannel is proportional to the square of the wave-amplitude ratio which has been qualitatively confirmed by previous approaches.
PACS: 05.60.-k – Transport processes / 47.45.-n – Rarefied gas dynamics
© EDP Sciences, 2002
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.