Boiling on a straight pin fin with variable thermal conductivity
Journal
Heat and Mass Transfer/Waerme- und Stoffuebertragung
Journal Volume
34
Journal Issue
5
Pages
381-386
Date Issued
1999
Author(s)
Lin W.W.
Abstract
This work theoretically investigated the thermal performance and stability characteristics of a straight pin fin subject to boiling considering a temperature-dependent thermal conductivity of fin, k = ksat(1 + b(T - Tsat)). Steady-state temperature distribution and the associated fin base heat flow were for the first time analytically found, whose stability characteristics were evaluated by linear stability analysis. A positive temperature coefficient b will raise both the fin's temperature and base heat flow. The corresponding stability for stable fin boiling was enhanced. A negative b results in an opposite trend. The use of a mean thermal conductivity in fin boiling calculations is discussed. ? Springer-Verlag 1999.
SDGs
Type
journal article