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|Analytical and numerical study of the electro-osmotic annular flow of viscoelastic fluids
|Ferrás, Luís Jorge Lima
Afonso, A. M.
Alves, M. A.
Nóbrega, J. M.
Pinho, F. T.
Slip boundary conditions
|Journal of Colloid and Interface Science
|Ferrás, L.L., Afonso, A.M., Alves, M.A., Nóbrega, J.M., Pinho, F.T., Analytical and numerical study of the electro-osmotic annular flow of viscoelastic fluids, Journal of Colloid and Interface Science, Vol 420, pp. 152-157, 2014
|In this work we present semi-analytical solutions for the electro-osmotic annular flow of viscoelastic fluids modeled by the Linear and Exponential PTT models. The viscoelastic fluid flows in the axial direction between two concentric cylinders under the combined influences of electrokinetic and pressure forcings. The analysis invokes the Debye-Hückel approximation and includes the limit case of pure electro-osmotic flow. The solution is valid for both no slip and slip velocity at the walls and the chosen slip boundary condition is the linear Navier slip velocity model. The combined effects of fluid rheology, electro-osmotic and pressure gradient forcings on the fluid velocity distribution are also discussed.
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|IPC - Artigos em revistas científicas internacionais com arbitragem
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