Electrical decontamination of soil

Moreau, Éric; Grimaud, P.O.; Touchard, G.

doi:10.1016/s0304-3886(97)00114-9

Cited by 1 publication

(1 citation statement)

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“…Dejam et al [17] studied analytically the shear dispersion a neutral non-reacting chemical species within a channel with porous walls, under the dual effects of pressure-driven and electro-osmotic flow, and computed the dispersion coefficient as a function of the Debye-Hückel parameter, Poiseuille contribution fraction, and Péclet number. Moreau et al [18] explored both computationally and experimentally the use of electro-osmosis in removing contaminants in geomaterials. Jian et al [19] employed a Laplace transform method to derive closedform solutions for time-dependent electro-kinetic viscoelastic flow in a micro-channel, describing the influence of viscosity ratio, density ratio, dielectric constant ratio, relaxation time, interface charge density jump, and interface zeta potential difference on velocity evolution.…”

Section: Introductionmentioning

confidence: 99%

Electrothermal transport of nanofluids via peristaltic pumping in a finite micro-channel: Effects of Joule heating and Helmholtz-Smoluchowski velocity

Tripathi

Sharma

Bég

2017

International Journal of Heat and Mass Transfer

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The present article studies theoretically the electrokinetic pumping of nanofluids with heat and mass transfer in a micro-channel under peristaltic waves, a topic of some interest in medical nano-scale electro-osmotic devices. The microchannel walls are deformable and transmit periodic waves. The Chakraborty-Roy nanofluid electrokinetic formulation is adopted in which Joule heating effects are incorporated. Soret and Dufour cross-diffusion effects are also considered. Under low Reynolds number (negligible inertial effects), long wavelength and Debye linearization approximations, the governing partial differential equations for mass, momentum, energy and solute concentration conservation are derived with appropriate boundary conditions at the micro-channel walls. The merging model features a number of important thermo-physical, electrical and nanoscale parameter, namely thermal and solutal Grashof numbers, the HelmholtzSmoluchowski velocity (maximum electro-osmotic velocity) and Joule heating to surface heat flux ratio. Closed-form solutions are derived for the solute concentration, temperature, axial velocity, averaged volumetric flow rate, pressure difference across one wavelength, and stream function distribution in the wave frame. Additionally expressions are presented for the surface shear stress function at the wall (skin friction coefficient), wall heat transfer rate (Nusselt number) and wall solute mass transfer rate (Sherwood number). The influence of selected parameters on these flow variables is studied with the aid of graphs. Bolus formation is also visualized and analyzed in detail.

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Section: Introductionmentioning

confidence: 99%