Fully-developed pipe and planar flows of multimode viscoelastic fluids

In this page you can download zipped files which contain codes to calculate the velocity and stress profiles for the fully-developed pipe flow solution of multimode PTT fluids (in the exponential and linear versions) with a Newtonian solvent contribution. The problem is solved and explained in the following paper:

DOA Cruz, FT Pinho 2006 "Fully-developed pipe and planar flows of multimode viscoelastic fluids" J. Non-Newt. Fluid Mech. 141 (2007) 85-98

The following files contain the codes required to perform calculations of the direct and inverse problems for exponencial and linear PTT models



Exact solution-Code for pipe flow solution of single mode linear and exponential PTT fluids in the absence of solvent viscosity


Exact solution-Code for pipe flow solution of multimode linear and exponential PTT fluids, with a Newtonian solvent contribution. Inverse and direct problems


Approximate solution-Code for pipe flow solution of multimode linear PTT fluids with a Newtonian solvent contribution. Direct problems