1D dynamics of a second-grade viscous fluid in a constricted tube
Volume 81 / 2008
Banach Center Publications 81 (2008), 95-103
MSC: Primary 76A05; Secondary 76M25.
DOI: 10.4064/bc81-0-6
Abstract
Using a one-dimensional hierarchical model based on the Cosserat theory approach to fluid dynamics we can reduce the full 3D system of equations for the axisymmetric unsteady motion of a non-Newtonian incompressible second-grade viscous fluid to a system of equations depending on time and on a single spatial variable. From this new system we obtain the steady relationship between average pressure gradient and volume flow rate over a finite section of a straight constricted tube, and the corresponding equation for the wall shear stress.
