Transport induced by a surface acoustic wave along a slab

Issue		Eur. Phys. J. Appl. Phys. Volume 18, Number 1, April 2002


Page(s)		51 - 56
Section		Physics and Mechanics of Fluids
DOI		10.1051/epjap:2002026

Eur. Phys. J. AP 18, 51-56 (2002)
DOI: 10.1051/epjap:2002026

Transport induced by a surface acoustic wave along a slab

Kwang-Hua W. Chu

Department of Physics, Northwest Normal University, Gansu, Lanzhou 730070, PR China

chukh01@nwnu.edu.cn

(Received: 7 April 2001 / Received in final form: 21 January 2002 / Accepted: 24 January 2002 )

Abstract
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.

What is OpenURL?

The OpenURL standard is a protocol for transmission of metadata describing the resource that you wish to access. An OpenURL link contains article metadata and directs it to the OpenURL server of your choice. The OpenURL server can provide access to the resource and also offer complementary services (specific search engine, export of references...). The OpenURL link can be generated by different means.

If your librarian has set up your subscription with an OpenURL resolver, OpenURL links appear automatically on the abstract pages.
You can define your own OpenURL resolver with your EDPS Account. In this case your choice will be given priority over that of your library.
You can use an add-on for your browser (Firefox or I.E.) to display OpenURL links on a page (see http://www.openly.com/openurlref/). You should disable this module if you wish to use the OpenURL server that you or your library have defined.