Title of article :
Assessment of mixing problem on the EOF with thermal effects
Author/Authors :
Kim، نويسنده , , H. and Kwak، نويسنده , , H.S. and Westerweel، نويسنده , , J.، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2011
Abstract :
A potential of mixing applications on an electroosmotic flow (EOF) with thermal effects is examined. For the thermal conditions, we apply the sinusoidal temperature boundary conditions on the walls. We exemplify two cases: (1) the mixing of laminar flows and (2) Taylor–Aris dispersion model. In the first case, we consider to mix two different samples that flow in parallel along the channel. In addition, by scaling analysis, we qualitatively examined the mixing result. The mixing efficiency is proportional to the temperature difference. Through the Taylor–Aris dispersion model, we found that the temperature gives rise to an increase of the Deff(T) at the low Peclet number where the diffusion and convection effect coexist.
Keywords :
Effective diffusion coefficient , Electroosmotic flow , Thermally driven electroosmotic Couette flow , Temperature-dependent physical properties , Microchannel , Mixing , Taylor–Aris dispersion
Journal title :
Colloids and Surfaces A Physicochemical and Engineering Aspects
Journal title :
Colloids and Surfaces A Physicochemical and Engineering Aspects