Obituary: Gad Hetsroni, Founding Editor IJMFInternational Journal of Multiphase Flow


Mechanical Engineering / Physics and Astronomy (all) / Fluid Flow and Transfer Processes



Gad Hetsroni created this journal in 1973, some 42 years ago.

He was the Editor-in-Chief until 2008, for 35 years. His own life was closely intertwined with that of the Journal. He loved the journal, was a protective and jealous ‘‘owner.’’ In return, Gad and his phase flow community acted as Associate Editors and members of the Editorial Board. Gad made his Associate Editors work hard and was meticulous, fair but also an unforgiving editor; the quality of the papers and the reputation that the Journal enjoys today testify to this.

Gad liked to recall the birth of the IJMF, his early discussions with the Pergamon publisher, the late Bob Maxwell. During the preparations, he learned that Professor Hugh Simpson had initiated a new journal, with Elsevier, to be called the International Journal of

Multi-Phase Flow. He realized that the two-phase flow field could in Australia. At the Technion, he served as Dean of Mechanical

Engineering and as Head of the Neaman Institute for Advanced

Studies. Among his many national committee assignments, he

Gad has served the national and international scientific community in many ways (scientific committee member, member of board of directors, conference organizer, editor, etc.) and he was also honored several times, most prominently with the ICMF

Senior Award.

In research, Gad Hetsroni was often the first and the best. Just to mention a few examples, he conducted pioneering work on the interaction between turbulence and particles; indeed, understanding the behavior of particles in gaseous or liquid streams is of great importance in several industrial or environmental applications. He also developed the technique of using infrared radiometry to

International Journal of Multiphase Flow 73 (2015) iii–iv lab l lsejournal had a very significant impact on the field by identifying and bringing together the multiphase flow community around the IJMF. During his time, many prominent members of the multiwas also Head of the National Council for Research and

Development in Israel. He was a Fellow of ASME International, where he served as Vice President of Region XIII, and as Governor.Obituary: Gad Hetsroni, Founding Editor

Contents lists avai

International Journa journal homepage: www.enot sustain two good journals (the only exception to his beloved and often-repeated rule ‘‘two is better than one’’). One journal title had a hyphen and the other not, so he went to see Hugh and they agreed to join their efforts and also remove the hyphen. Hugh

Simpson became IJMF Editor for many years, and Elsevier and

Pergamon were joint publishers – the only such joint venture.

When one of us (GY), back in 1999, asked several prominent members of the multiphase flow community to contribute to a special IJMF edition, a Festschrift honoring the Editor-in-Chief at his 65th birthday, we realized once more the admiration, respect and affection that the multiphase community had for Gad. The response and the result were overwhelming: 22 articles and so many words of admiration, respect and affection from the members of this large family. Graham B. Wallis wrote a long poem for

Gad; the beginning reads: ‘‘. . . let me here the praises sing/ of the editorial king/ of the international/ utterly exceptional/ Journal of the Multiphase,/ that the toughest critics praise.’’

Gad Hetsroni was born in Haifa in 1934, before the creation of the state of Israel. In 1957, he graduated with a B.Sc. cum laude from the Technion, the Israel Institute of Technology, whose first cornerstone was laid in 1912. He continued his education in the

US and obtained his Ph.D. from Michigan State University in 1963.

He then occupied for a couple of years a position with the

Atomic Power Division of Westinghouse before going back to

Israel in 1965 and joining the Faculty of the Technion where he remained and finished his days, still working as an emeritus in his Multiphase Flow Lab.

In 1974 he became the Danciger Professor of Engineering at

Technion. In the meantime, he also held positions in the US, at the Electric Power Research Institute, Stanford University, the

University of Minnesota, and the University of New South Wales le at ScienceDirect of Multiphase Flow vier .com/ locate / i jmulflow measure the temperature distribution on the wall of a conduit; in groundbreaking experiments, this technique was applied to measure the interaction of particles with the wall in dispersed-particle flows. With the help of the associated numerical signal processing, the technique renders possible the study of the coherent structures, which are intimately related to turbulence.

Recently, he has used surfactants to produce a decay of the turbulence, and hence learn about its sources from a different angle. The last several years, he has worked on a ‘‘hot’’ topic, namely heat transfer and fluid flow in microchannels, of great relevance in ‘‘high-tech’’ industries. This work has resulted in the publication of the book, Fluid Flow, Heat Transfer and Boiling in Micro-channels; he is the senior author. This brings the number of major books that he published on multiphase flows to three, not including major chapters that he wrote in other books. He is the author of about 250 research papers.

Professor Hetsroni has been passing on the basic knowledge on fluid dynamics and multiphase flows to many generations of researchers and scientists/engineers. Another great love and very successful focal point of his career were the Short Courses on

Multiphase Flows that he directed or co-directed for many years: he started the now famous series when he was at Stanford. The first course was offered in 1979 and then continued at

ETH-Zurich and UC-Santa Barbara. Over 2000 participants from all over the world have enrolled in these courses conducted with two of the undersigned (GY and GFH) and Sanjoy Banerjee. The participants in these courses have ‘‘propagated the message’’ and