On the Generalized Brinkman Number Definition and Its Importance for Bingham Fluids

• Tipo: Artigo em Revista Científica Internacional
• Data: 2011

Autores

P. M. Coelho (Autor) FEUP; Faria, JC (Autor) Outra

Revista

A Revista está pendente de validação pelos Serviços Administrativos.

Título: JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME

Vol. 133

Páginas: 054505-1-054505

ISSN: 0022-1481

Indexação

ISI Web of Knowledge - 6 Citações

Scopus - 8 Citações

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Engenharia mecânica

Outras Informações

ID Authenticus: P-002-SA2

DOI: 10.1115/1.4003169

Abstract (EN): In this technical note we discuss the importance of using a generalized Brinkman number definition for laminar pipe flow of a Bingham fluid, when viscous dissipation effects are relevant. We show that adapting the Brinkman number definition commonly used for Newtonian fluids directly to the more general class of non-Newtonian fluids does not calculate correctly the ratio between heat generated by viscous dissipation and heat transfer at the wall and leads to a distortion of the graphical representation of the Nusselt number, Nu, rendering difficult, if not impossible, the comparisons of the Nu behavior between different Brinkman numbers. The use of the proposed generalized Brinkman number removes these problems and simultaneously it has the merit of being independent of any reference apparent viscosities. [DOI: 10.1115/1.4003169]

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 4