Hassan Aref

Hassan Aref (28 September 1950 – 9 September 2011) was the Reynolds Metals Professor in the Department of Engineering Science and Mechanics at Virginia Tech, and the Niels Bohr Visiting Professor at the Technical University of Denmark. Prior to joining Virginia Tech as Dean of Engineering in 2003-2005 Aref was Head of the Department of Theoretical and Applied Mechanics at University of Illinois at Urbana-Champaign for a decade from 1992-2003. Before that he was on the faculty of University of California, San Diego, split between the Department of Applied Mechanics and Engineering Science and the Institute of Geophysics and Planetary Physics 1985-1992. Simultaneously, he was Chief Scientist at the San Diego Supercomputer Center for three years 1989-1992. Aref started his faculty career in the Division of Engineering at Brown University 1980-85. He was educated at the University of Copenhagen Niels Bohr Institute, graduating in 1975 with a cand. scient degree in Physics and Mathematics. Subsequently he received the PhD degree in Physics from Cornell University in 1980.
Aref is particularly well known for having developed the concept of chaotic advection in fluid mechanics. The notion that regular, laminar flows can produce chaotic particle trajectories is now understood as a cornerstone of fluid flow kinematics and the term chaotic advection is used as a classifying keyword by leading journals of the field and for major conferences. Applications of chaotic advection range from mixing by atmospheric and oceanographic flows to mixing in microfluidic devices. Aref received the 2000 Otto Laporte Award from the American Physical Society for this work and for his work on vortex dynamics for which he is also well known.
Aref was the author of some 80 articles in leading journals in the field of fluid mechanics. He has also authored chapters in several books, edited two collections of papers, and given presentations at conferences and universities around the world.
Throughout his career Aref was involved in editorial work. He was Associate Editor of Journal of Fluid Mechanics 1984-94, founding editor with David G. Crighton of Cambridge Texts in Applied Mathematics, and served on the editorial board of Theoretical and Computational Fluid Dynamics and as co-editor of Advances in Applied Mechanics. He served on the editorial boards of Physics of Fluids, Physical Review E, and Regular and Chaotic Dynamics.
Aref served as chair of the Division of Fluid Dynamics of the American Physical Society. He chaired the US National Committee on Theoretical and Applied Mechanics and has served on advisory boards for several professional societies. He was a member of the Executive Committee of the Congress Committee of the International Union of Theoretical and Applied Mechanics (IUTAM), a member of the National Academies Board on International Scientific Organizations, and a member of the Board of the Society of Engineering Science. He served as Secretary for the Midwest Mechanics Seminar, 1994-2003.
Aref was president of the 20th International Congress of Theoretical and Applied Mechanics held in Chicago in 2000. In the 70+ years of these significant congresses they have been held three times in USA: In 1938 in Boston, MA, with MIT and Harvard University as the host institutions, in 1968 with Stanford University as the host, and in 2000 with a consortium led by University of Illinois, Urbana-Champaign as the hosts.
Hassan Aref was born in Alexandria, Egypt. Previously a citizen of Canada, he acquired U.S. citizenship in 1998. He died from an aortic dissection.

• 2011 Geoffrey Ingram Taylor Medal
• 2011 Honorary Doctorate, Technical University of Denmark
• 2006 Niels Bohr Visiting Professor, Technical University of Denmark
• 2003 Reynolds Metals Professor, Virginia Tech
• 2001 Fellow, World Innovation Foundation
• 2000 Otto Laporte Award, American Physical Society "For his pioneering contributions to the study of chaotic motion in fluids, scientific computation, and vortex dynamics, and most notably for the development of the concept of chaotic advection."
• 2000 Fellow, American Academy of Mechanics
• 1994 Toshiba Keio Lecture, Keio University, Japan
• 1991 Westinghouse Distinguished Lectureship, University of Michigan
• 1991 Lecturer, Midwest Mechanics Seminar
• 1988 Fellow, American Physical Society "For the elucidation of chaotic motion in few-vortex problems and particle advection, and for the development of numerical methods based on many-vortex interactions."
• 1988 Stanley Corrsin Lectureship, The Johns Hopkins University
• 1986 Foreign Member, Danish Centre for Applied Mathematics and Mechanics
• 1985 Presidential Young Investigator Award, National Science Foundation
• 1975 NATO Fellowship; Cornell University Graduate Fellowship, 1975–1980

• "Hassan Aref of Virginia Tech receives the G.I. Taylor Medal for research activities". 21 January 2011. Retrieved 30 October 2011. 
• "Hassan Aref Receives the G. I. Taylor Medal for Research". 18 January 2011. Retrieved 30 October 2011. 
• "DTU Honorary Doctorates". Retrieved 19 January 2017. 
• "New Members of the WIF". Retrieved 30 October 2011. 
• "Midwest Mechanics Seminar Speakers". Retrieved 30 October 2011.