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To the memory of Professor Nobuhide KASAGI
Yuji SUZUKI (The University of Tokyo)
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ˈSanjoy Banerjee ƋŽ˅1996 Ł(ǢüˈŌƝ
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笠木伸英先生を偲ぶ
There are many things I remember well about Nobu’s
To the memory of Professor Nobuhide Kasagi
persona. One of these was that he was meticulous and
had the kindness and foresight to deal with even the most
Professor Nobu Kasagi’s unexpected passing is a great
apparently trivial but essential details. When I first
sorrow and loss to all of us who have known him. He was
arrived in Tokyo, not only had he arranged for where I
a truly fine human being, as well as a great engineering
was to stay, but had even arranged for a personal stamp
scientist,
many
in Kanji so I could access a bank account. Another time,
accomplishments. For his family to whom he was very
when my family, who had stayed on in Santa Barbara,
close,
was visiting Tokyo we all went to his laboratory at the
widely
we
convey
recognized
our
deepest
for
his
sympathies
and
condolences.
university. The complex equipment bewildered my
daughter who was five at that time but Nobu of course
Though I had met Nobu on many previous occasions, the
had toys for her to explain the chaotic nature of
first time I got to know him well was at the 1995
turbulence, including a double pendulum, which
International Conference on Multiphase Flow in Kyoto.
exhibited chaotic behavior! There is a picture somewhere
An event of note was some rather raucous singing by the
in our archives, which illustrates this occasion.
French contingent, notably Olivier Simonin that Nobu
and I both enjoyed together. At that time Nobu, perhaps
Over the years, Nobu and I kept in touch. He was seminal
bemused by the cacophonous vocalizations, asked if I
in initiating the symposia on ‘Turbulence and Shear Flow
would be interested in spending a year in the Mechanical
Phenomena’, which have now become a well-known
Engineering Department at the University of Tokyo as
international forum for research in the area. I was the
the Mitsubishi (Visiting) Professor. As we shared many
Chair of the first symposium, which was held in Santa
common interests, such as turbulence structures
Barbara, and it was due to Nobu and John Eaton’s tireless
interacting with deformable boundaries, I accepted with
efforts that the conference was so successful that it
alacrity. So it was that I spent four months of my
kicked off an outstanding series. We continued to meet
sabbatical from UC Santa Barbara at Tokyo in the Fall of
often, either in Japan or in the US. Some years ago, I
1996, working much harder than I had ever anticipated
remember coming into Tokyo with a horribly stiff back
under Nobu’s benevolent but eagle eye, which of course
and staying at the International House in Roppongi.
was a mark of the greatness of the man.
Nobu and his wife, Hiroko, came to take me to dinner at
a nearby restaurant, Enoteca. Nobu was concerned about
The time in Tokyo hosted by Nobu was one of the most
my physical condition, but as always had a solution. “A
enjoyable periods of my life. He was, as is well known,
bottle of Gevrey Chambertin (a Burgundy)’ he said, ‘will
a gentleman in the best sense of the word. He was warm
cure it or at least kill the pain much better than a
but always correct, welcoming but never effusive,
massage’, and of course it did! Nobu was always
solicitous of one’s needs but never overwhelming and
imperturbable and knew how to deal with a problem,
one of the most intellectually stimulating people I have
often proposing an out-of-the-box solution.
worked with. His laboratory was an engine of unusual
productivity and distinction, which the scholars he
His kindness and warmth were remarkable, and I will
mentored nonetheless stashed with whiskey among the
miss him greatly, as will all those who knew him. He will
scientific paraphernalia- much appreciated by several of
be remembered with affection and respect by those who
my visiting PhD students. He kept an unrelenting
knew him.
schedule himself, expecting others to work long hours
with the same selfless devotion as his. But after work he
Sanjoy Banerjee
would some times go out to sing karaoke with us and all
CUNY, Sept. 2015
our cares would fall away. Needless to say Nobu had a
very fine voice!
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A Personal Tribute to Nobuhide Kasagi
Like many in our community, who were entirely unaware
of Nobu’s illness, I received the news of his untimely and
tragic death with incredulity, followed by an intense
feeling of loss and sadness at a life taken all too early.
Nobu’s astonishing number of scientific, professional
and societal achievements, and their lasting impact, stand
proudly on their own plinth, and need not be retold and
lauded in this personal tribute – save for one exception.
Meeting of the TSFP5 Organising Committee in
In 2006, Nobu was elected Fellow of the British Royal
Munich in 2006 (right-to-left: Nobu Kasagi, John
Academy of Engineering – an especially rare honour
Eaton, Michael Leschziner, Pepe Humphrey†, Rainer
granted to foreign nationals. The one-sentence citation
required to precede the detailed case for support read as
Friedrich)
follow the earlier, highly successful Turbulent Shear
follows:
Flows series. Among the four of us, Nobu was the
principal driver of this initiative, displaying the singleminded determination and dedication that characterizes
Distinguished for his outstandingly innovative
research contributions to engineering science and
everything he tackled….and the rest is history: TSFP –
technology, covering a broad range of fundamental
the latest, TSFP-9, held in Melbourne in August 2015 –
topics and applications; for his outstanding
has become the principal global conference reporting
leadership role in Japan's mechanical engineering
research in turbulent flows. This is one of numerous
community - most notably, as President Elect of
legacies he leaves behind.
JSME and leader of Japan's premier 21st Century
Mechanical
My closest and most rewarding interaction with Nobu
Systems Innovation ; and his wholly exceptional
came in 2006, when I had the privilege and pleasure of
dedication to building bridges between Japan's
spending a 9-month sabbatical period in the legendary
engineering
“Kasagi Laboratory” at Tokyo Daigaku. I shall always
Center-of-Excellence
Program
profession
and
on
the
international
remain grateful to Nobu for his decisive role in securing
community.
the JSPS Senior Fellowship that supported my visit, and
What else need one say about this supreme academic
also for being a supremely meticulous and generous host.
professional who was dedicated to the promotion and
Attending dozens of informal seminars given by his
exploitation of engineering science, to rearing and
students, and participating in outings and social
fostering the next generation of Japan’s scientists,
“drinking-and-eating” gatherings, with Nobu almost
engineers and university academics, and to making
invariably present and fully engaged, made it obvious to
Japan’s engineering community a natural constituent in
me why he was so admired and liked by his junior
the global science and engineering fabric?
collaborators and students: it was not simply his supreme
command of the science being researched, his global
I have been fortunate to call Nobu my collaborator and –
stature and prominent position in Japanese society, but
I like to think – my friend since 1997, when we joined
his impeccable politeness, his tendency to listen patiently
+
forces with John Eaton, Pepe Humphrey and Martin
and with total attention before giving thoughtful and
Sommerfeld to establish the Turbulence and Shear
constructive feedback and guidance, and the charm he
Flow Phenomena (TSFP) series of conferences, to
exuded, curiously contrasting a somewhat patrician
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J. HTSJ, Vol. 54, No. 229
țƦ¢Ɉ¸ǳC±0
Naturally, Hiroko displayed at least a modicum of
concern (my wife would have been in sheer,
unadulterated panic). Not so Nobu: calm and composure
personified. Somehow, Nobu was confident the handbag
would be returned – and, of course, it was, entirely as
Nobu predicted.
Nobu was an intensely private individual, and he would
probably forgive me for intimating that he rarely “let his
hair down”, at least in my presence. Even after several
glasses of good French or Italian wine, he tended to
remain rather serious, controlled and reflective. Our
Dinner at The Gore, South Kensington, London, 2012
conversations rarely ventured into the realm of his
(left-to-right: Nobu, Hiroko, Freda, Michael)
private life – although I know that he was intensely proud
presence that comes with being a member of the national
of his two successful daughters. Our conversations
elite. I will admit to leaving Tokyo rather humbled by his
usually revolved – or ended up revolving - around his
admirable leadership qualities.
concerns about Japan’s role on the world stage, about its
long-term ability to compete, as a manufacturing nation,
During my time in Tokyo, and at gatherings in various
with China, and about the impact of globalisation on the
locations in Japan and abroad, I gleaned a little of Nobu’s
outlook and changing lifestyle of Japan’s young
qualities as a private individual – generosity and
generation. His pre-occupation with these profound
graciousness being at the top of my list. My wife, Freda,
national questions, even in the most informal of social
and I had the pleasure of sharing with Nobu and his
settings, characterized a man who saw his life as a
vivacious and charming wife, Hiroko, a good number of
mission to improve the lot of Japan and mankind as a
excellent French and Italian meals – although I shall also
whole.
cherish the many down-to-earth lunches we had in a
simple, small noodle restaurant just outside Tokyo
May he rest in peace and look benignly upon our
Daigaku.
inadequate efforts to build on his legacy.
Strong self-control was a major fix-point in Nobu’s
Michael Leschziner
character. On one occasion, when Nobu and Hiroko
Imperial College London, Sept. 2015
visited us in our Central London apartment, Hiroko
forgot her handbag in the taxi that brought them to us.
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J. HTSJ, Vol. 54, No. 229

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