S. M. F. Hasani

TL;DR: In this paper, the effect of spacer geometry on fluid dynamics and mass transfer in feed channels of spiral wound membranes has been investigated, and three-dimensional computational fluid dynamics (CFD) simulations reveal significant influence of the spacer geometric parameters such as filament spacing, thickness, and flow attack angle on wall shear rates and Mass Transfer coefficients.

TL;DR: In this paper, the authors examined the effect of spacer orientation, inlet velocity and filament spacing on shear stress distribution and temperature polarization in membrane distillation modules and found that spacer filaments touch the top or bottom surfaces of membrane, the temperature polarization is high which results in low heat transfer rates.

TL;DR: In this paper, three-dimensional computational fluid dynamics (CFD) study is carried out for spacer-obstructed feed channels of membrane elements using Finite Volume package FLUENT.

TL;DR: In this article, the authors examine transient flow and temperature patterns in spacer-filled membrane distillation channels and show that at higher Reynolds number the vortices emerge behind spacer filaments, move along with the flow and then finally diminish.

TL;DR: In this article, the authors developed approximations for total stress τ and mean velocity ǫ for turbulent boundary layer flows for a wide range of near equilibrium flows and incorporated into an inner law method for evaluating the mean wall shear stress τ 0.