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| Titel: |
Long wavelength approximation to peristaltic motion of an Oldroyd 4-constant fluid in a planar channel |
| Auteur: |
Ali, N. Wang, Y. Hayat, T. Oberlack, M. |
| Verschenen in: |
Biorheology |
| Paginering: | Jaargang 45 (2008) nr. 5 pagina's 611-628 |
| Jaar: |
2008-10-22 |
| Inhoud: |
An analysis is carried out to study the peristaltic motion of an incompressible Oldroyd 4-constant fluid in a planar channel. The flow modeling is first developed in dimensionless form and the governing problem is then simplified by adopting a long wavelength assumption. It is found that unlike Oldroyd 3-constant fluid, the governing problem of an Oldroyd 4-constant fluid under a long wavelength approximation contains the rheological parameters. The resulting non-linear problem has been solved numerically using a combination of the finite difference scheme and the iterative method. In addition, an analytical solution is presented for the domain near the channel center. The effect of material parameters on the pumping and trapping is discussed. A comparison with the corresponding results for a viscous Newtonian fluid is also made. |
| Uitgever: |
IOS Press |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 4 van 6 gevonden artikelen
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