Author(s)

F. Scofano Neto, R.O.C. Guedes & R.M. Cotta

Abstract

Unsteady conjugated heat transfer analysis in low Reynolds pipe flow F. Scofano Neto," R.O.C. Guedes" & R.M. Cotta& , J( J - ^Mechanical Engineering Department, ABSTRACT The aim of this paper* is to investigate the heat transfer problem in circular pipe flow due to a sudden change of the outer temperature. The problem is modeled in order to account for wall conjugation effects. The Generalized Integral Transform Technique is used to provide a hybrid analytical- numerical solution furnishing accurate results for average fluid and wall temperatures. INTRODUCTION The common assumption of neglecting wall heat storage effects in transient internal forced convection has always been questioned and i nnume r o us contributions appeared in the literature as an attempt to investigate this problem. Mikhailov and Ozisik C13 present a formal solution for a general transie

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