Study of steady pipe and channel flows of a single-mode Phan-Thien-Tanner fluid

• Tipo: Artigo em Revista Científica Internacional
• Data: 2001

Autores

Alves, MA (Autor) FEUP; Pinho, FT (Autor) FEUP; Oliveira, PJ (Autor) Outra

Revista

Título: Journal of Non-Newtonian Fluid Mechanics

Vol. 101 Nº 1-3

Páginas: 55-76

ISSN: 0377-0257

Editora: Elsevier

Indexação

ISI Web of Knowledge - 61 Citações

ISI Web of Science

Scopus - 80 Citações

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Engenharia mecânica

Outras Informações

ID Authenticus: P-000-SXS

DOI: 10.1016/s0377-0257(01)00159-8

Abstract (EN): Analytical solutions are derived for the steady state channel and pipe flows of viscoelastic fluids obeying the complete single-mode Phan-Thien-Tanner (PTT) constitutive equation with a linear stress coefficient in the absence of a solvent viscosity contribution. The results include the profiles of all relevant stresses, the axial velocity and the viscosity across the gap. The three material functions of the single-mode PTT model in steady Couette flow are also given and it is shown that the conditions of the maximum point in the shear stress versus shear rate curve are related to the conditions for existence of steady state solutions in the channel and pipe flows. The range of model parameters for which a classical steady solution exists is established.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 22