Projects per year
Abstract / Description of output
In microfluidic applications involving highfrequency acoustic waves over a solid boundary, the Stokes boundarylayer thickness delta is so small that some nonnegligible slip may occur at the fluidsolid interface. This paper assesses the impact of this slip by revisiting the classical problem of steady acoustic streaming over a flat boundary, replacing the noslip boundary condition with the Navier condition u vertical bar(y0) = Ls partial derivative(y)u vertical bar(y0), where u is the velocity tangent to the boundary y = 0, and the parameter Ls is the slip length. A general expression is obtained for the streaming velocity across the boundary layer as a function of the dimensionless parameter Ls/delta. The limit outside the boundary layer provides an effective slip velocity satisfied by the interior mean flow. Particularizing to traveling and standing waves shows that the boundary slip respectively increases and decreases the streaming velocity.
Original language  English 

Article number  063010 
Number of pages  5 
Journal  Physical Review E 
Volume  89 
Issue number  6 
DOIs  
Publication status  Published  18 Jun 2014 
Keywords / Materials (for Nontextual outputs)
 MICROFLUIDICS
 FLUID
 WAVES
Fingerprint
Dive into the research topics of 'Boundary streaming with Navier boundary condition'. Together they form a unique fingerprint.Projects
 1 Finished

Science and Innovation: Numerical Algorithms and Intelligent Software for the Evolving HPC Platform
1/08/09 → 31/07/14
Project: Research