Computer simulation and theory of the diffusion- and flow-induced concentration dispersion in microfluidic devices and HPLC systems based on rectangular microchannels

Geometrically Similar Rectangular Passive Micromixers and the Scaling Validity on Mixing Efficiency and Pressure Drops

“…Following these, the molecular transverse diffusion have been analysed experimentally and theoretically, and the similar scaling laws have been deduced [20,21]. Subsequently, several numerical analyses were carried out to comprehend the diffusion transport and cross-stream diffusion in the rectangular microchannels [22]. Microfluidics research, micro devices with simple and integrated microchannels, chambers, valves and pumps However, the scaling effect on the chemical species mixing was not much explored in the passive micromixers.…”

Investigations of the unsteady diffusion process in microchannels

“…Solutions of the coupled equations of motion and diffusion are based on various numerical methods and numerical codes: commercial FLUENT code (Adeosun andLawal, 2009), Fourier transform (Esté vez-Torres et al, 2007), Lattice Boltzman (Sullivan et al, 2007), or FD specialized programs (Morf et al, 2008). Numerical computations are performed normally in 3D microchannel configurations.…”

On the two-domain equations for gas chromatography.

“…In recent years columns of rectangular, or nearly rectangular cross section have been used in micro-fabricated GC columns. Several authors have analyzed GC columns with rectangular cross sections [8,14,5,6,1,10]. However, all of these authors have assumed that the cross sections are uniformly coated with a thin layer of stationary phase.…”