Flow boundary conditions from nano- to micro-scales

Flow boundary conditions from nano- to micro-scales

Analysis of two-dimensional thin structures (from micro- to nano-scales) using the boundary element method

In this paper, the boundary element method (BEM) based on elasticity theory is developed for twodimensional (2-D) thin structures with the thickness to length ratio in the micro (10ÿ6) or nano (10ÿ9) scales. An ef®cient analytical method is developed to deal with the nearly-singular integrals in the boundary integral equation (BIE) for 2-D thin structures. The nearly-singular integrals, which a...

Micro/nano thermal boundary layer equations with slip–creep–jump boundary conditions

At the microand nanoscale, the standard continuity boundary conditions at fluid–solid interfaces of classical transport phenomena do not apply and must be replaced by boundary conditions that allow discontinuities. In this study, the classical thermal laminar boundary layer equations are studied using Lie symmetries with the no-slip boundary condition for tangential velocity and continuous temp...

From micro to nano scales -recent progress in the characterization of nitrided austenitic stainless steels

In the frontier of materials science, understanding of materials has been in multiple scales from macro, micro, to atomic levels. This is attributed to the advanced instrumentations such as SEM, TEM, XPS, XRD, as well as several other spectroscopic and metallographic analyses. Fe-CrNi based austenitic stainless steels have a diverse range of modern applications ranging from biomedical prosthese...

Controlling flow at the micro- and nano-scale in zebra-patterned micro- and nano-fluidic devices

When ions are driven by an external electrostatic field, their net motion will generate a net flow in the surrounding fluid called electro-osmotic flux. In microfluidic devices, the onset of such a flux ultimately depends on the effective interaction between the fluid and the inner walls of the channel. In particular novel scenarios can occur when the channel properties are not homogeneous, as ...