International Journal of Heat and Mass Transfer 54 (2011) 753–754

Contents lists available at ScienceDirect

International Journal of Heat and Mass Transfer
journal homepage: www.elsevier.com/locate/ijhmt

In Celebration

Professor Zeng-Yuan Guo, Chinese Academician, on his 75th birthday

Professor Zeng-Yuan Guo, Chinese Academician and professor
in the Department of Engineering Mechanics, School of Aerospace,
Tsinghua University, Beijing, China, celebrates his 75th birthday
this year. It is our great pleasure to offer our congratulations on
his many contributions to the development of the ﬁeld of heattransfer.
Professor Guo was born on 20 February 1936 in Jiangsu Province, China. He graduated from Tsinghua University in 1959. He
has worked in Tsinghua University, Beijing, China ever since, a tenure of over 50 years. From 1979 to 1981, he worked as a Humboldt
scholar in TU Muenchen, Germany.
Professor Guo’s research has been mainly concerned with thermoﬂuid mechanics, micro/nanoscale heat transfer, thermal system
optimization and efﬁcient thermal transport. He has always sought
to ﬁnd new ways to analyze heat transfer problems. For instance,
he focused much attention on the adverse effects of heating on
the ﬂow in convective heat transfer processes, instead of the conventional view that just considers the impact of the ﬂow on theheat transfer. He developed the concepts of thermal drag, thermaldrive, thermal displacement, and thermal instability which werepresented in his keynote lectures at the 8th and 9th International
Heat Transfer Conferences and in a chapter on ‘‘Thermally Induced
Effects on Fluid Flow” in the Annual Review of Heat Transfer, vol. 5,
pp. 207–269, 1994. His achievements in this direction won him a
3rd Class National Natural Science award from the Chinese government in 1995.

doi:10.1016/j.ijheatmasstransfer.2010.09.062

Professor Guo’s research is also related to the development ofmodern microelectronic technologies. Microscale and nanoscaleheat transfer effects are key problems in this ﬁeld. In his keynote
lecture at the International Conference on Transport Phenomenaat Microscale in Canada in 2000 and at the 12th International Heat
Transfer Conferences in France in 2002, Professor Guo ﬁrst
revealed that the microscale heat transfer size effect on the ﬂow
and heat transfer correlations is attributed to the variation of thedominant factors, such as the ﬂow compressibility, surface roughness, and axial conduction in the tube wall, as the scale decreases
even though the continuum assumption is still applicable. He wasawarded the ICMM 2005 Lifetime Contribution Award in the ﬁeldof Heat and Mass Transfer due to his pioneering contributions
through original research related to micro/nanoscale heat transfer.
In particular, his contributions to our understanding of singlephase liquid ﬂow in microchannels were noted as major contributions that have signiﬁcantly impacted our understanding in thisﬁeld.
In the last decade, Professor Guo has mainly focused his research of effective utilization of thermal energy. He proposed theﬁeld synergy principle for the optimization of convective heattransfer and introduced the physical quantity ‘‘entransy” to represent the physical nature of the ﬁeld synergy principle, by analogy
between thermal and electrical transport. The dissipation of entransy can be used to deﬁne the efﬁciencies of heat transfer processes and to establish the extremum principle of entransy
dissipation for heat transfer optimization because it represents
the irreversibility of heat transfer not related to heat-work conversions. He was the principle investigator on a National Basic Research Program of China project to investigate key scientiﬁcproblems related to high efﬁciency energy conservation which
won the 2nd National Science and Technology Progress Award ofChina in 2004.
In recent years, Professor Guo has focused his interest on the reexploration of the nature of heat. He proposed the concept of‘‘thermomass”, using Einstein’s relativity relationship between
mass and energy and proposed a general heat conduction law thatincludes various heat conduction models, such as the Fourier model and C–V model as special cases.
Professor Guo is also a famous and respected educator in thethermal science ﬁeld in China. He has supervised over 50 doctoral
students and many masters students and has taught many undergraduate students. He has promoted signiﬁcant international cooperation in the ﬁeld of heat and mass transfer in many venues. Hewas an assembly member of the International Heat Transfer
Conference and an executive committee member of the International Center for Heat and Mass Transfer.

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In Celebration / International Journal of Heat and Mass Transfer 54 (2011) 753–754

On behalf of Professor Guo’s students, colleagues, and friends
from around the world, including the editors of this journal, wewish him happiness, good health and continued success.
Zhi-Xin Li
Xin-Gang Liang
Tsinghua University, China
Xing Zhang
Chinese Society of Heat and Mass Transfer,
Institute of Engineering Thermophysics,
Tsinghua University, Beijing, China
E-mail address: x-zhang@mail.tsinghua.edu.cn
Wen-Quan Tao
Xi’an Jiaotong University, China

Chong-Fang Ma
Beijing University of Technology, China
Ping Cheng
Shanghai Jiao Tong University, China
Satish Kandlikar
Rochester Institute of Technology, United States
W.J. Minkowycz
University of Illinois at Chicago, United States
Available online 9 November 2010