Convection and Conduction Heat Transfer
Edited by Amimul Ahsan


Published by InTech
Janeza Trdine 9, 51000 Rijeka, Croatia

Copyright © 2011 InTech
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Publishing Process Manager Ivana Lorkovic
Technical Editor Teodora Smiljanic
Cover Designer Jan Hyrat
Image Copyright ARENA Creative, 2011. Used under license from Shutterstock.com

First published September, 2011
Printed in Croatia

A free online edition of this book is available at www.intechopen.com
Additional hard copies can be obtained from



Convection and Conduction Heat Transfer, Edited by Amimul Ahsan
p. cm.
ISBN 978-953-307-582-2








Contents

Preface IX

Part 1 Heat Convection 1
Chapter 1 A Mixed Convection Study in Inclined
Channels with Discrete Heat Sources 3
Paulo M. Guimarães and Genésio J. Menon
Chapter 2 Periodically Forced Natural Convection
Through the Roof of an Attic-Shaped Building 33
Suvash Chandra Saha
Chapter 3 Analysis of Mixed Convection
in a Lid Driven Trapezoidal Cavity 55
M. A. H. Mamun, T. R. Tanim,
M. M. Rahman, R. Saidur and Shuichi Nagata
Chapter 4 Convective Heat Transfer of Unsteady
Pulsed Flow in Sinusoidal Constricted Tube 83
J. Batina, S. Blancher,
C. Amrouche, M. Batchi and R. Creff
Chapter 5 Numerical Solution of Natural
Convection Problems by a Meshless Method 107
Gregor Kosec and Božidar Šarler
Chapter 6 Hydromagnetic Flow with Thermal Radiation 133
Cho Young Han and Se-Myong Chang
Part 2 Heat Conduction 147
Chapter 7 Transient Heat Conduction in
Capillary Porous Bodies 149
Nencho Deliiski
VI Contents

Chapter 8 Non-Linear Radiative-Conductive
Heat Transfer in a Heterogeneous
Gray Plane-Parallel Participating Medium 177
Marco T.M.B. de Vilhena,

Bardo E.J. Bodmann and Cynthia F. Segatto
Chapter 9 Optimization of the Effective
Thermal Conductivity of a Composite 197
Hubert Jopek and Tomasz Strek
Chapter 10 Computation of Thermal Conductivity
of Gas Diffusion Layers of PEM Fuel Cells 215
Andreas Pfrang, Damien Veyret and Georgios Tsotridis
Chapter 11 Analytical Methods for Estimating Thermal Conductivity of
Multi-Component Natural Systems in Permafrost Areas 233
Rev I. Gavriliev
Chapter 12 Heating in Biothermal Systems 257
Huang-Wen Huang and Chihng-Tsung Liauh
Chapter 13 A Generalised RBF Finite Difference
Approach to Solve Nonlinear Heat
Conduction Problems on Unstructured Datasets 281
D. Stevens, A. LaRocca, H. Power and V. LaRocca
Part 3 Heat Transfer Analysis 297
Chapter 14 Heat Transfer Analysis of Reinforced
Concrete Beams Reinforced with GFRP Bars 299
Rami A. Hawileh
Chapter 15 Modelling of Heat Transfer and Phase Transformations in
the Rapid Manufacturing of Titanium Components 315
António Crespo
Chapter 16 Measurement of Boundary Conditions -
Surface Heat Flux and Surface Temperature 341
Wei Liu
Chapter 17 Properties and Numerical
Modeling-Simulation of Phase Changes Material 349
Pavel Fiala, Ivo Behunek and Petr Drexler
Chapter 18 Finite Element Methods to Optimize by Factorial Design

the Solidification of Cu-5wt%Zn Alloy in a Sand Mold 377
Moisés Meza Pariona and Viviane Teleginski








Preface

The convection and conduction heat transfer, thermal conductivity, and phase
transformations are significant issues in a design of wide range of industrial
processes and devices. This book includes 18 advanced and revised contributions,
and it covers mainly (1) heat convection, (2) heat conduction, and (3) heat transfer
analysis. The first section introduces mixed convection studies on inclined channels,
double diffusive coupling, and on lid driven trapezoidal cavity, forced natural
convection through a roof, convection on non-isothermal jet oscillations, unsteady
pulsed flow, and hydromagnetic flow with thermal radiation. The second section
covers heat conduction in capillary porous bodies and in structures made of
functionally graded materials, integral transforms for heat conduction problems,
non-linear radiative-conductive heat transfer, thermal conductivity of gas diffusion
layers and multi-component natural systems, thermal behavior of the ink, primer
and paint, heating in biothermal systems, and RBF finite difference approach in heat
conduction. The third section includes heat transfer analysis of reinforced concrete
beam, modeling of heat transfer and phase transformations, boundary conditions-
surface heat flux and temperature, simulation of phase change materials, and finite
element methods of factorial design. The advanced idea and information described
here will be fruitful for the readers to find a sustainable solution in an industrialized

society.
Acknowledgements
All praise be to Almighty Allah, the Creator and the Sustainer of the world, the Most
Beneficent, Most Benevolent, Most Merciful, and Master of the Day of Judgment. He is
Omnipresent and Omnipotent. He is the King of all kings of the world. In His hand is
all good. Certainly, over all things Allah hast power.
The editor would like to express appreciation to all who have helped to prepare this
book. The editor expresses his gratefulness to Ms. Ivana Lorkovic, Publishing Process
Manager, InTech Open Access Publisher for its continued cooperation. In addition, the
editor appreciatively remembers the assistance of all authors and reviewers of this
book.
X Preface

Gratitude is expressed to Mrs. Ahsan, Ibrahim Bin Ahsan, Mother, Father, Mother-in-
Law, Father-in-Law, and Brothers and Sisters for their endless inspirations, mental
supports and also necessary help whenever any difficulty.

Amimul Ahsan, Ph.D.
Department of Civil Engineering
Faculty of Engineering
University Putra Malaysia
Malaysia