Title

Nano boundary layer equation with nonlinear Navier boundary condition

Document Type

Journal Article

Publisher

Elsevier Ltd

Faculty

Faculty of Computing, Health and Science

School

School of Engineering

RAS ID

9327

Comments

Matthews, M. T., & Hill, J. M. (2007). Nano boundary layer equation with nonlinear Navier boundary condition. Journal of mathematical analysis and applications, 333(1), 381-400.

Abstract

At the micro and nano scale the standard no slip boundary condition of classical fluid mechanics does not apply and must be replaced by a boundary condition that allows some degree of tangential slip. In this study the classical laminar boundary layer equations are studied using Lie symmetries with the no-slip boundary condition replaced by a nonlinear Navier boundary condition. This boundary condition contains an arbitrary index parameter, denoted by , which appears in the coefficients of the ordinary differential equation to be solved. The case of a boundary layer formed in a convergent channel with a sink, which corresponds to , is solved analytically. Another analytical but non-unique solution is found corresponding to the value , while other values of n for correspond to the boundary layer formed in the flow past a wedge and are solved numerically. It is found that for fixed slip length the velocity components are reduced in magnitude as n increases, while for fixed n the velocity components are increased in magnitude as the slip length is increased.

DOI

10.1016/j.jmaa.2006.08.047

Access Rights

free_to_read

 
COinS
 

Link to publisher version (DOI)

10.1016/j.jmaa.2006.08.047