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OCR for page 162

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HENDRICK KRAMERS 1917–2006 Elected in 1978 “For leadership in Dutch industry, education, and professional societies and research on chemical reactor design, separation processes, and process control.” BY R. BYRON BIRD AND BOUDEWIJN VAN NEDERVEEN HENDRIK KRAMERS (usually called Hans), formerly a member of the Governing Board of Koninklijke Zout Organon, later Akzo, and presently Akzo Nobel, passed away on September 17, 2006, at the age of 89. He became a foreign associate of the National Academy of Engineering in 1980. Hans was born on January 16, 1917, in Constantinople, Turkey, the son of a celebrated scholar of Islamic studies at the Univer- sity of Leiden (Prof. J.H. Kramers, 1891-1951) and nephew of the famous theoretical physicist at the same university (Prof. H.A. Kramers). He pursued the science preparatory curriculum at a Gymnasium (high-level high school) in Leiden from 1928 to 1934. Then, from 1934 to 1941, he was a student in engineering physics at the Technische Hogeschool in Delft (Netherlands), where he got his engineer’s degree (roughly equivalent to or slightly higher than an M.S. in the United States). From 1941 to 1944, Hans was employed as a research physi- cist in the Engineering Physics Section at TNO (Organization for Applied Scientific Research) associated with the Tech- nische Hogeschool in Delft. From 1944 to 1948, he worked at the Bataafsche Petroleum Maatschappij (BPM) (Royal Dutch Shell) in Amsterdam. BPM had given a large sum of money to the Technische Hogeschool (later the Technische Universiteit) in Delft for a research laboratory on the condition that a new 163

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164 MEMORIAL TRIBUTES professor be appointed. This new professor was Hans Kramers, who at the time was only 30 years old and had but one publica- tion to his name. Hans readily took up this tremendous challenge. He took upon himself the development of “engineering physics” (ap- plied transport phenomena, chemical-reactor operation, and process control), and the original work he and his students performed resulted in many publications that are still recog- nized as classics. The experimental set-ups in the laboratory were often homemade and cleverly designed, and the students genuinely enjoyed their work. Hans was an inspiring teacher who always tried to bring out the best in his students. Although he could be critical and de- manding, he knew how to couple his criticisms with a friendly smile and a twinkle in his eye. He supervised 160 students through their engineering degrees and directed the Ph.D. theses of 15 students. Hans and his students published about 70 scholarly papers, mostly in chemical engineering journals. Although the number of publications per year was modest, their quality was high, because Hans was reluctant to publish anything that was not really new. Besides his contributions to research, Hans’s effectiveness as a teacher was demonstrated by the number of prominent positions in research, engineering, and management held by his former students in the Dutch (and very international) chemi- cal industry during the second half of the twentieth century. Ten of his former students became university professors; thus, part of his legacy is the continuing education of outstanding engineers in the Netherlands. During his Delft period, Hans prepared a set of mimeo- graphed lecture notes called Physische Transportverschijnselen (1956), the first attempt to teach the subject of transport phe- nomena and its applications to chemical engineering. In addi- tion, he coauthored, with K.R. Westerterp, Elements of Chemical Reactor Design and Operation (Netherlands University Press, 1963). He also spent the first half of 1955 as a visiting professor at the University of Minnesota. In the fall of 1957, the University of Wisconsin began teach-

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165 HENDRICK KRAMERS ing transport phenomena to chemical engineering students, which led to the publication of Notes on Transport Phenomena (John Wiley, 1958), by R.B. Bird, W.E. Stewart, and E.N. Lightfoot. Bob Bird spent the spring semester of 1958 at Hans Kramers’s laboratory in Delft, where he taught transport phenomena and produced a set of class notes, Transportverschijnselen in Stromende Media (1958), with the assistance of B. van Nederveen (later CEO of Hoechst Nederland). Hans and Bob engaged in many fruitful discussions and developed a lifelong friendship, and Bob considers his interactions with Hans Kramers very important to his own professional development. Hans felt very strongly that Europeans should work together across national boundaries to adapt to a rapidly changing world. In 1963, he left the laboratory he had founded and nur- tured to take a job as the first scientific director of Euratom, in Ispra, Italy. Fluent in several languages and an international authority in engineering physics, Hans was ideally suited for this job, which required an understanding of the interests of participating countries. Here his talents as an administrator came to the fore. From 1968 to 1979, Hans was a member of the Governing Board of Koninklijke Zout Organon, later Akzo, and still later Akzo Nobel, located in Arnhem, Netherlands. He was respon- sible for research and development and engineering during a difficult period of mergers, reorganizations, and the develop- ment of new modes of operation. With his leadership style of coaching and encouraging, rather than directing, Hans was a great success. He was a strong believer, both at Akzo and in his many other activities, that people not remain in one job for too long: Board memberships should be limited to two terms; members in scientific and professional organizations should leave five or so years after retirement; and a person starting on a new assignment should consider beforehand how and when to get out. Hans Kramers served on the following councils and com- mittees in the Netherlands: chairman, Industrial Development Council of the Ministry of Economic Affairs (1979-1986); chair- man, Advisory Committee on the Future of the Laboratories

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166 MEMORIAL TRIBUTES for Hydraulics and Soil Mechanics (1981-1983); member of two advisory committees on the future of the Department of Mining and Petroleum Engineering, Technische Universiteit in Delft (1983-1986); consultant to the Ministry of Economic Affairs (1985-1990); member of the General Board of TNO (1975-1985); and committee member of Stichting Toekomst der Techniek (1969-1975). In addition, he was a member of the following organizations: Royal Institution of Engineers (1945); Institution of Chemical Engineers (UK), fellow (1952); Netherlands Physical Society (1945); and Royal Netherlands Chemical Society (1968). He was also one of the founders of the Division of Chemical Engineer- ing and Division of Process Control of the Royal Institution of Engineers in The Hague. Hans was honored by a number of organizations: Royal Netherlands Academy of Arts and Sciences (1978); Hollandse Maatschappij der Wetenschappen (1958); National Academy of Engineering, foreign associate (1980); Technical Research Medal, Royal Institution of Engineers in the Netherlands (1978); Honorary Doctor, Technische Universiteit in Eindhoven, Netherlands (1976), the first such degree ever granted; honor- ary member, Royal Institution of Engineers in the Netherlands (1980); honorary member, Netherlands Forum for Engineering and Science (1987); Commendatore nell’ Ordine del Merito della Republica Italiana (1970); Knight in the Order of the Lion of the Netherlands (1979); and honorary founding father of the European Federation of Chemical Engineers (1996). Despite his exalted positions and the many honors bestowed on him, Hans remained quiet and unassuming, amiable, and full of good humor. In his honor, the Technische Universiteit in Delft has named the laboratory he founded the Kramers Laboratorium. Hans was also a family man. Asked by one of his young sons about his ambitions, he answered that the most important one was to see his children find their way. He and his wife created a trustful home for their children, which was also a common meeting place for the wider family. Hans taught his children and grandchildren to find simple solutions for complex problems,

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167 HENDRICK KRAMERS using cheap, effective, and sometimes unorthodox tools. After his retirement, he gradually retreated from the many commit- ments he was still involved in, and he devoted his time to many issues in the home and the garden, such as woodworking and building compost systems, as well as to the old farm the family had rented in Tuscany for many years. He will always be remem- bered in his family for his riddles and unexpected funny stories. His and his wife’s positive and constructive way of looking at life has been continued by the generations that followed. Hans was survived for just over one year by his wife Lies, who died on November 20, 2007, and by his five children (Pieter, Jan Dirk, Annelies, Pauline, and Nanette), nine grandchildren, and one great-grandchild.