an:00474901 Zbl 0783.76077 Mavrantzas, V. G.; Souvaliotis, A.; Beris, A. N. Pseudospectral calculations of stress-induced concentration changes in viscometric flows of polymer solutions EN Theor. Comput. Fluid Dyn. 5, No. 1, 3-31 (1993). 0935-4964 1432-2250 1993
76M25 76A05 76A10 65N35 single-fluid concept; nonzero stress gradients; spectral collocation method; axisymmetric steady-state solution; two-fluid concept We investigate the flow of dilute polymer solutions in viscometric devices where the polymer concentration is allowed to vary due to the existence of nonzero stress gradients. A spectral collocation method is used in order to solve for the axisymmetric steady-state solution of the full set of the governing equations. Two alternative continuum formulations are considered based on a single- and two-fluid concept, respectively.