Axisymmetric motion of a generalized Rivlin-Ericksen fluids with shear-dependent normal stress coefficients
| dc.contributor.author | Carapau, Fernando | |
| dc.date.accessioned | 2012-11-14T11:53:12Z | |
| dc.date.available | 2012-11-14T11:53:12Z | |
| dc.date.issued | 2008-11-01 | |
| dc.description.abstract | We analyze the unsteady flow of an incompressible generalized second-order fluid in a straight rigid tube, with circular cross-section of constant radius, where the normal stress coefficients depend on the shear rate by using a power law model. The full 3D unsteady model is simplified using a one-dimensional hierarchical approach based on the Cosserat theory related to fluid dynamics, which reduces the exact three-dimensional equations to a system depending only on time and on a single spatial variable. From this new system we obtain the relationship between mean pressure gradient and volume flow rate over a finite section of the tube. Attention is focused on some numerical simulation for unsteady/ steady mean pressure gradient and on the analysis of perturbed flows. | por |
| dc.identifier.authoremail | flc@uevora.pt | |
| dc.identifier.citation | Inter. Journal of Mathematical Models and Methods in Applied Sciences, Issue 2, Volume 2, pp. 168-175, 2008. | por |
| dc.identifier.issn | 1998-0140 | |
| dc.identifier.uri | http://hdl.handle.net/10174/5563 | |
| dc.language.iso | por | por |
| dc.peerreviewed | yes | por |
| dc.rights | restrictedAccess | por |
| dc.subject | Cosserat theory, | por |
| dc.subject | axisymmetric motion, | por |
| dc.subject | mean pressure gradient, | por |
| dc.subject | volume flow rate, | por |
| dc.subject | perturbed flows, | por |
| dc.subject | power law viscoelastic function. | por |
| dc.title | Axisymmetric motion of a generalized Rivlin-Ericksen fluids with shear-dependent normal stress coefficients | por |
| dc.type | article | por |