Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7061175 | Journal of Non-Newtonian Fluid Mechanics | 2016 | 25 Pages |
Abstract
Modern computational rheology techniques are used to interpret an experimental observation, which has remained unresolved for over four decades. The simple flow in question involved the rotation of a solid sphere in an infinite expanse of non-Newtonian elastic liquid. Under some conditions, Giesekus observed an interesting secondary flow. This added an 'inertial' secondary flow near the rotating sphere to the well-understood 'slow-flow' features observed and predicted by others in the 1960s. By employing a Phan-Thien/Tanner (PTT) constitutive model and moving away from the restriction of 'slow-flow', we show that it is possible to predict numerically the inertial vortex observed by Giesekus.
Keywords
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Fluid Flow and Transfer Processes
Authors
I.E. Garduño, H.R. Tamaddon-Jahromi, K. Walters, M.F. Webster,