Two different approaches for analysing heat transfer in a power-law fluid flow between parallel plates

• Type: Article in International Scientific Journal
• Date: 2017-05-25

Authors

Fábio A. Caldas (Author) FEUP; Paulo M. Coelho (Author) FEUP

Journal

Title: Frontiers in Heat and Mass Transfer

Vol. 8 No. 32

Pages: 1-8

ISSN: 2151-8629

Publisher: Global Digital Central

Indexing

Scopus

Other information

DOI: 10.5098/hmt.8.32

Abstract (EN): In this paper, Nusselt numbers for a power-law fluid in a fully developed laminar flow between parallel plates with constant, and different, wall heat fluxes in the presence of dissipation effects are presented. The Nusselt numbers values were obtained following two different approaches. One is the “classical” approach, based on a single bulk temperature, and this approach is used in this work to obtain for the first time generic analytical expressions for Nusselt numbers. In the new approach, different bulk temperatures are used for each Nu ′ determination, one bulk temperature for each side of the location of the temperature profile where the derivative ∂T/ ∂y=0.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 8