International Journal of Heat and Mass Transfer 188 (2022) 122626

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

In Celebration

Celebration of Professor Bernhard Weigand on his 60th birthday

Our colleague, teacher and friend, Professor Bernhard Weigand
celebrates his 60th birthday this year. It gives us immense pleasure
to take this opportunity to warmly applaud him for all his achievements, and to express our sincere appreciation for his outstanding
contributions to the ﬁeld of heat transfer and multi-phase ﬂows.
Bernhard Weigand is a Professor at the University of Stuttgart,
and a member of the German National Academy of Science andEngineering (acatech) and the Heidelberger Akademie der Wissenschaften. Born on January 10, 1962 in Somborn (Hessen), hestudied Mechanical Engineering at the TH Darmstadt (now TUDarmstadt) from 1981 to 1987, from where he graduated as Dipl.Ing.. From 1987 to 1992, he worked as a research assistant at thesame university while conducting his doctoral research. His scientiﬁc supervisor was Professor Hans Beer, who in turn was a student of Professor Fran Bošnjaković. From 1992 to 1999, he worked
at ABB Kraftwerke AG in Baden, Switzerland, as development engineer and eventually became in charge of fundamental research
into heat transfer, and the design of cooling technologies for all
new gas turbine blades. In parallel with his full-time employment
at ABB, he successfully completed his habilitation in February 1997.
On April 1, 1999, he was appointed as Full Professor at the University of Stuttgart, and as Director of the Institute of Aerospace
Thermodynamics (ITLR).
Professor Bernhard Weigand is universally acknowledged as theleading scientist in the ﬁelds of thermodynamics and heat transfer.
His use of experimental, computational and analytical methods toinvestigate various gas turbine cooling technologies such as swirl
cooling, ﬁlm cooling and transpiration cooling have set the pace ofprogress in these ﬁelds. His contributions in these areas have been
particularly signiﬁcant, most especially because of new physical insight provided in regard to a variety of related physical effects.
He was extraordinarily successful in transferring university-based
fundamental research to the gas-turbine industrial community. He
achieved this through long-standing and productive collaborations
with ABB, Siemens AG and MTU Aero Engines AG. In addition tohttps://doi.org/10.1016/j.ijheatmasstransfer.2022.122626
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working on complex heat transfer issues, he contributed to experimental and computational analysis of the physics of droplet interaction, a topic of vital importance to a variety of industrial processes such as spray cooling, droplet evaporation in combustion
engines, and droplet-wall interactions with smooth and textured
surfaces, with applications, for example, to the design of medical inhalers. Moreover, he has been leading the development ofin-house high-ﬁdelity multi-phase solver FS3D and contributed tonumerical methods for studying droplet evaporation and solidiﬁcation. His contribution also includes studies on the post-Darcy
ﬂow and heat transfer inside additively-manufactured porous
media, as well as smart interface engineering with permeableinterface.
In addition to his leadership at the University of Stuttgart, Professor Bernhard Weigand plays a leading role as the spokesman ofDFG (German Research Foundation)-funded collaborative projects,
such as the SFB-TRR 75: “Droplet Dynamic Processes under Extreme Environmental Conditions” and the GRK-2160: “Droplet Interaction Technologies” (DROPIT). In terms of academic output,Professor Bernhard Weigand has published close to 500 articles inleading archival journals and conferences. He has also been very
successful in converting the outcome of his research into tangible beneﬁts to the industry, as evidenced by the 45 patents which
he has co-authored with his students and collaborators. In addition to his extensive involvement with research activities, Professor Bernhard Weigand has rendered many exemplary services tothe ﬁeld of engineering education. Thus he has been extensively
involved with the development of new national and international
study and doctoral programs, and has co-authored several textbooks that have become widely-used in undergraduate and graduate programs of study. Among his textbooks it is notable to mention Convective Heat and Mass Transfer, a book he co-authored withWilliam Kays and Michael Crawford, that has become one of themost well-known text books of its kind and has been translated
into many languages.
Professor Bernhard Weigand’s wide-ranging research interests,
based on profound knowledge in many areas of thermodynamics, heat transfer and multi-phase ﬂow, as well as his ability toestablish long-lasting and productive collaborations with nationaland international partners have established him as a highly respected professor throughout the world. Within these cooperative activities, he is adept in providing new insights and innovative perspectives regarding measurement techniques, thermal processes, analytic procedures, and other areas. In addition to hisroles as the spokesman of SFB-TRR 75 and the GRK-2160, he is a
Principal Investigator and a project network spokesperson in theX. Chu, G. Yang, A. Terzis et al.

International Journal of Heat and Mass Transfer 188 (2022) 122626

Cluster of Excellence 2075 (SimTech), a member of the board ofSFB-1313 “Interface-Driven Multi-Field Processes in Porous Media- Flow, Transport and Deformation”, and was a member of theboard of SFB-TRR 40 “Technological Foundations for the Design ofThermally and Mechanically Highly Loaded Components of FutureSpace Transportation Systems”. He was the spokesman of the GRK1095: “Aerothermodynamic Design of a Scramjet Propulsion System for Future Space Transportation Systems” from 2004 to 2015.
He served as the vice-rector of the University of Stuttgart from2006 to 2009. Professor Bernhard Weigand is also active in international academic visits and communications. For more thantwenty years he has been a yearly visiting Professor at the Swiss
Federal Institute of Technology in Lausanne (EPFL) and at the University of Bergamo in Italy. This led to very intensive interaction
and collaboration in common research. From 2015 to 2020, he had
been an Advisory Professor at the Shanghai Jiao Tong University inChina.
We take this wonderful occasion and this apt forum of the International Journal of Heat and Mass Transfer to recognize Professor Bernhard Weigand’s outstanding scientiﬁc accomplishments,
his visionary leadership, and his exemplary academic service to oursociety. Professor Weigand is an invaluable asset to our community, and we wish him many more productive years to come. On
behalf of his colleagues, collaborators, students, and friends fromaround the world, we wish him good health, happiness and prosperity on his 60th birthday.

Visakh Vaikuntanathan
Shiv Nadar University, India
Wenkang Wang
University of Stuttgart, GermanyZhouhang LiKunming University of Science and Technology, China
Grazia Lamanna
University of Stuttgart, Germany
Stephanie Fest-Santini, Maurizio Santini, Gianpietro Elvio Cossali
Università degli Studi di Bergamo, Italy
Phillip LigraniUniversity of Alabama at Huntsville, USABassam A. Younis
University of California - Davis, USAMichael Crawford
The University of Texas at Austin, USA
Peter OttEPFL, Switzerland
Jürgen Köhler
TU Braunschweig, Germany
Christian Rohde, Claus-Dieter Munz, Rainer Helmig
University of Stuttgart, Germany

Xu Chu∗University of Stuttgart, Germany

Tianshou Zhao
Hong Kong University of Science and Technology, China

Guang Yang
Shanghai Jiao Tong University, China∗ Corresponding author.:

E-mail address: xu.chu@simtech.uni-stuttgart.de (X. Chu)

Alexandros Terzis
Technion - Israel Institute of Technology, Israel

Available online 3 February 20222