Faculty Directory
Julio M. Ottino

Walter P. Murphy Professor of Chemical and Biological Engineering and (by courtesy) Mechanical Engineering

Distinguished Robert R. McCormick Institute Professor

Dean

Contact

2145 Sheridan Road
Tech L262
Evanston, IL 60208-3109

847-491-5220Email Julio Ottino

Website

Ottino Research Group


Departments

Chemical and Biological Engineering

Affiliations

Theoretical and Applied Mechanics Graduate Program

Research Interests

Complex systems, dynamics of granular matter, mixing and segregation

Current topics of interest include investigations of a broad class of problems where there is a competition between order and disorder, such as in mixing and segregation of granular matter or fluid mixing and, more generally, problems in the realm of complex systems involving tools such as agent-based models and network theory.

The interest in basic understanding of mixing lies in the ubiquity of mixing processes in technology and nature; examples are found in chemical, mechanical, and aeronautical engineering, but also in geophysics, physiology, oceanography, polymer engineering, and environmental sciences.

The work in granular dynamics involves a blend of theory, computations, and experimental work that reaches into applications. While important to a wide range of industries, our understanding of solid mixing and segregation is primitive. Some key questions we are currently addressing are: What features of mixing can be predicted computationally? What causes demixing and how it interplays with mixing? How can mixing be optimized?

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Significant Recognition

  • Member, American Academy of Arts and Sciences, 2003
  • Ernest W. Thiele Award (AIChE, Chicago section), 2002
  • William H. Walker Award, American Institute of Chemical Engineers, 2001
  • John S. Guggenheim Fellowship, 2001
  • Paul J. Flory Lecturer, Stanford University, 2001
  • Danckwerts Memorial Lecture, London, England, 1999
  • Member, National Academy of Engineering, 1997
  • Fellow, American Association for the Advancement of Science, 1996
  • Sigma Xi Distinguished Lecturer, 1996-1999
  • Alpha Chi Sigma Award, American Institute of Chemical Engineers, 1994
  • Fellow, American Physical Society, Division of Fluid Dynamics, 1993
  • Finalist Scientific Prize, Art for Science, LV-MH, Paris, France, 1989
  • Presidential Young Investigator Award (NSF), 1984

Selected Publications

  • Alexander M. Fry, Paul Umbanhowar, Julio M Ottino, Richard M Lueptow, “Effect of pressure on segregation in granular shear flows”, Physical Review E, (2018)
  • Zhekai Deng, Paul Umbanhowar, Julio M Ottino, Richard M Lueptow, “Continuum modelling of segregating tridisperse granular chute fow”, Proceedings of The Royal Society of London, Series A: Mathematical and Physical Sciences, (2018)
  • Lachlan D. Smith, Paul Umbanhowar, Julio M Ottino, Richard M Lueptow, “Mixing and transport from combined stretching-and-folding and cutting-and-shuffling”, Physical Review E, (2017)
  • Hongyi Xiao, Julio M Ottino, Richard M Lueptow, Paul Umbanhowar, “Transient response in granular quasi-two-dimensional bounded heap flow”, Physical Review E, (2017)
  • Paul P. Park, Thomas F. Lynn, Paul B. Umbanhowar, Julio M. Ottino, Richard M. Lueptow, “Mixing and the fractal geometry of piecewise isometries”, Physical Review E - Statistical, Nonlinear, and Soft Matter Physics, (2017)
  • Lachlan D. Smith, Paul P. Park, Paul B. Umbanhowar, Julio M. Ottino, Richard M. Lueptow, “Predicting mixing via resonances”, Physical Review E - Statistical, Nonlinear, and Soft Matter Physics, (2017)
  • Hongyi Xiao, David McDonald, Yi Fan, Paul B. Umbanhowar, Julio M. Ottino, Richard M. Lueptow, “Controlling granular segregation using modulated flow”, Powder Technology, (2017)
  • Ivan C. Christov, Richard M. Lueptow, Julio M. Ottino, Rob Sturman, “A parametric study of mixing in a granular flow a biaxial spherical tumbler”, Dynamical Systems: Modelling, 2015, (2016)