Using the special properties of helium both above and below the lambda point (about 2.18 degrees K), properties of turbulence can be explored in regimes never reached before.  This lecture will be a summary of recent progress made in understanding both classical and superfluid turbulence.

Katepalli R. Sreenivasan has held visiting positions at the Indian Institute of Science, Caltech, Rockefeller University, Institute for Advanced Study at Princeton, and, as the Sir C.V. Raman Professor, at the Indian Academy of Sciences. 

He has served as editor or associate editor of journals such as Journal of Applied Mechanics, Theoretical and Computational Fluid Mechanics, Physical Review Letters, Physical Review E, Physics of Fluids, and Journal of Fluid Mechanics. He was the Chairman of the Mechanical Engineering Department and Acting Chairman of the Council of Engineering at Yale.  At the American Physical Society (APS), he served as the Chair of the Division of Fluid Dynamics, as the founding Chairman of the Topical Group in Statistical and Nonlinear Physics, and as a member of the Publications Oversight Committee.

He is Fellow of the American Academy of Arts and Sciences and of the Third World Academy of Sciences, member of the National Academy of Engineering, Honorary Fellow of the Indian Academy of Sciences, and a recipient of Distinguished Alumnus Award of the Indian Institute of Science.  Among the recognitions that his work has received are Humboldt and Guggenheim Fellowships, Fellowship of APS, ASME and AAAS, Distinguished Scholar Award of the American Chapter of the Indian Physics Association, the Otto Laporte Memorial Award of APS, and the 2002 Medal in Engineering Sciences from the Third World Academy of Sciences.