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Professor Geoffrey Hewitt is one of the well-known names in the field of heat transfer, two-phase flow, and nuclear engineering and is well respected among his colleagues in the heat-transfer and nuclear-engineering community all over the world. He was born on January 3, 1934. He received B.Sc. Tech. and Ph.D. degrees in 1954 and 1957, respectively, from the University of Manchester Institute of Science & Technology (UMIST).

After finishing his Ph.D. degree in 1957, Professor Hewitt joined United Kingdom Atomic Energy Authority (UKAEA), Chemical Engineering Division, Atomic Energy Research Establishment (AERE), Harwell Laboratory, Oxfordshire, as a Scientist in 1957, and was appointed as a Division Head in 1976. He was the Founder and Head for one of Harwell’s largest commercial projects, Heat Transfer and Fluid Flow Service (HTFS), within the period of 1968–1982. He started his academic life in the Department of Chemical Engineering, Imperial College of London, as a Professor on a part-time basis in 1985. He then became a Professor on a full-time basis in 1990. Within the period of 1993–1999, he was a Courtaulds Professor of Chemical Engineering. Finally, he became an Emeritus Professor in 1999. Since joining Imperial College of London in 1985, he has received many Engineering and Physical Sciences Research Council (EPSRC), EU, and industrial grants to study multiphase flow and heat transfer in nuclear reactor and oil well applications.

Professor Hewitt has been a role model and mentor to numerous generations of researchers in the heat-transfer, two-phase flow, and nuclear-engineering fields. He is certainly one of the most admired and ingenious researchers in this field. He has been frequently invited to be the keynote speaker at various international conferences. For example, he was one of 36 keynote speakers at the 6th International Heat Transfer Conference (IHTC-6), Toronto, Canada, in August 1978. His keynote lecture was “Critical Heat Flux in Flow Boiling” (Paper KS-13). The 1978 IHTC was the first time the poster session was used extensively. Also, he was the Program Chair/Secretary at 10th International Heat Transfer Conference (IHTC-10), Brighton, UK, August 14–18, 1994. In addition, he was the Editor of “Volume 6: Heat Transfer Augmentation, Two-Phase Flow, Conduction and Insulation, the 10th International Heat Transfer Conference (IHTC-10),” Brighton, UK, August 14–18, 1994. Recently, Professor Hewitt served as a member of the International Scientific Committee (ISC) for the United Kingdom at the 15th International Heat Transfer Conference (IHTC-15), Kyoto, Japan, August 10–15, 2014.

During his work at UKAEA, Chemical Engineering Division, Atomic Energy Research Establishment (AERE), Harwell Laboratory, Oxfordshire, as well as Department of Chemical Engineering, Imperial College of London, Professor Hewitt published over 500 reports and papers as well as many books on heat and mass transfer, multiphase flow, and nuclear engineering like Refs. [1,20]. He was a former Editor of the Multiphase Science and Technology Journal. His October 2013 paper “Disturbance Wave Development in Two-Phase Gas-Liquid Upwards Vertical Annular Flow” [21] was ranked among the Top 25 Hottest Articles in the International Journal of Multiphase Flow during 2013 [22].

Professor Hewitt’s contributions to the field of heat transfer, two-phase flow, and nuclear engineering have been recognized by his election to the Royal Academy of Engineering in 1985, the Royal Society in 1990, and the US National Academy of Engineering in 1998. Also, he is the recipient of many international awards such as the Donald Q. Kern Award by the American Institute of Chemical Engineers (AIChE) in 1981; the International Centre for Heat and Mass Transfer (ICHMT) fellowship award in 1982; the Council Medal by the Institution of Chemical Engineers (IChemE) in 1994; the Max Jakob Memorial Award by ASME in 1994; the Luikov Medal by the ICHMT in 1996; the Nusselt–Reynolds Prize in 1997 at the assembly of the World Conference on Experimental Heat Transfer, Fluid Mechanics, and Thermodynamics (EXHFT 4), Brussels, Belgium; the Arnold Greene Medal by the IChemE in 2000; and the Senior Multiphase Flow Award in 2007 at the 6th International Conference on Multiphase Flow (ICMF 2007), Leipzig, Germany. In 2007, Professor Hewitt was presented the Global Energy Prize at the World Economic Forum. In addition, he served as President of the UK IChemE during 1989–1990. Furthermore, he has received honorary doctorates at the University of Louvain, Belgium in 1988, Heriot Watt University in 1995, and UMIST in 1998.

On the occasion of his 80th birthday, on behalf of his students, colleagues, and friends all over the world, we wish him a very happy birthday and a continuous active life in good health and happiness!

References

1.
Hewitt
,
G. F.
, and
Hall-Taylor
,
N. S.
,
1970
,
Annular Two Phase Flow
,
Pergamon Press
,
Oxford
.
2.
Butterworth
,
D.
, and
Hewitt
,
G. F.
,
1977
,
Two-Phase Flow and Heat Transfer
(Harwell Series),
Oxford University Press
,
Oxford
.
3.
Hewitt
,
G. F.
,
1978
,
Measurement of Two Phase Flow Parameters
,
Academic Press
,
London
.
4.
Bergles
,
A. E.
,
Collier
,
J. G.
,
Delhaye
,
J. M.
,
Hewitt
,
G. F.
, and
Mayinger
,
F.
,
1981
,
Two-Phase Flow and Heat Transfer in the Power and Process Industries
,
Hemisphere Publishing
,
New York
.
5.
Hewitt
,
G. F.
,
Delhaye
,
J. M.
, and
Zuber
,
N.
, eds.,
1982
,
Multiphase Science and Technology
(Vol.
1
),
Hemisphere Publishing
,
New York
.
6.
Hewitt
,
G. F.
,
1982
,
Handbook of Multiphase Systems (Chapter 2)
, G. Hetsroni, ed.,
Hemisphere Publishing
,
New York
.
7.
Taborek
,
J.
,
Hewitt
,
G. F.
, and
Afgan
,
N. H.
,
1983
,
Heat Exchangers: Theory and Practice
,
Hemisphere Publishing
,
Washington, DC
.
8.
Collier
,
J. G.
, and
Hewitt
,
G. F.
,
1987
,
Introduction to Nuclear Power
(Series in Chemical and Mechanical Engineering),
Hemisphere Publishing
,
Washington, DC
.
9.
Beaton
,
C. F.
,
Hewitt
,
G. F.
, and
Liley
,
P. E.
,
1989
,
Physical Property Data for the Design Engineer
,
Hemisphere Publishing
,
Washington, DC
.
10.
Hewitt
,
G. F.
,
Mayinger
,
F.
, and
Risnic
,
J. R.
,
1991
,
Phase-Interface Phenomena in Multiphase Flow
,
Hemisphere Publishing
,
New York
.
11.
Hewitt
,
G. F.
,
Delhaye
,
J. M.
, and
Zuber
,
N.
,
1992
,
Post Dryout Heat Transfer
,
CRC Press
,
Boca Raton, FL
.
12.
Hewitt
,
G. F.
,
Shires
,
G. L.
, and
Bott
,
T. R.
,
1994
,
Process Heat Transfer
,
CRC Press
,
Boca Raton, FL
.
13.
Hewitt
,
G. F.
,
Shires
,
G. L.
, and
Polezhaev
,
Y. V.
, eds.,
1997
,
International Encyclopedia of Heat and Mass Transfer
,
CRC Press
,
Boca Raton, FL
.
14.
Hewitt
,
G. F.
,
1998
, “Boiling (Chapter 15)”
Handbook of Heat Transfer
, 3rd ed., W. M. Rohsenow, J. P. Hartnett, and Y. I. Cho, eds.,
McGraw-Hill
,
New York
.
15.
Hewitt
,
G.
,
1999
, “Introduction and Basic Models (Chapter 8),”
Handbook of Phase Change: Boiling and Condensation
, S. G. Kandlikar, M. Shoji, and V. K. Dhir, eds.,
Taylor & Francis
,
Philadelphia, PA
.
16.
Hewitt
,
G.
, and
Kawaji
,
M.
,
1999
, “Fluid Mechanics Aspects of Two-Phase Flow (Chapter 9),”
Handbook of Phase Change: Boiling and Condensation
, S. G. Kandlikar, M. Shoji, and V. K. Dhir, eds.,
Taylor & Francis
,
Philadelphia, PA
.
17.
Falcone
,
G.
,
Alimonti
,
C.
,
Hewitt
,
G. F.
, and
Harrison
,
B.
,
2004
,
Multiphase Flow Metering: Current Trends and Future Developments, in Offshore Multiphase Production Operations
(SPE Reprint Series No. 58, Vol.
2
, Part IV),
The Society of Petroleum Engineers
,
Houston, TX
.
18.
Hewitt
,
G. F.
, and
Vassilicos
,
J. C.
,
2005
,
Prediction of Turbulent Flows
,
Cambridge University Press
,
Cambridge, UK
.
19.
Hewitt
,
G. F.
,
2008
,
Heat Exchanger Design Handbook
,
Begell House
,
Danbury, CT
.
20.
Falcone
,
G.
,
Hewitt
,
G. F.
, and
Alimonti
,
C.
,
2009
,
Multiphase Flow Metering: Principles and Applications (Developments of Petroleum Science)
Elsevier
, (Vol.
54
), pp.
1
329
, ISBN-13: 978-0-444-52991-6; ISBN-10: 0-444-52991-8.
21.
Zhao
,
Y.
,
Markides
,
C. N.
,
Matar
,
O. K.
, and
Hewitt
,
G. F.
,
2013
, “
Disturbance Wave Development in Two-Phase Gas-Liquid Upwards Vertical Annular Flow
,”
Int. J. Multiphase Flow
,
55
, pp.
111
129
.10.1016/j.ijmultiphaseflow.2013.04.001