Mathematical modeling and numerical simulation of a non-Newtonian flow through a filter (CROSBI ID 99614)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Bourgeat, Alain ; Gipouloux, Olivier ; Marušić-Paloka, Eduard
engleski
Mathematical modeling and numerical simulation of a non-Newtonian flow through a filter
We consider non-Newtonian flows, like polymer in fusion or in solution, pushed through a thin periodic filter with period and thickness $\varepsilon \ll 1$. Starting from the Stokes system with a nonlinear viscosity obeying Carreau's law (with a high rate viscosity or without it), we study the asymptotic behavior of the flow as $\varepsilon \rightarrow 0$. We obtain the global convergence of the pressure in the whole domain and not separately in the upper part and in the lower part. Numerical tests for various fluids and various filter shapes are comparing results given by the homogenized model with the ones given by the microscopic Carreau--Stokes model.
non-Newtonian flow ; thin filter ; effective boundary conditions ; homogenization ; boundary layers
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Podaci o izdanju
62 (2)
2001.
597-626
objavljeno
0036-1399
1095-712X
10.1137/S0036139999354741