Levich Institute Seminar Announcement, 05/12/2009
Tuesday, 05/12/2009
2:00 PM
Steinman Hall, Room #312
(Chemical Engineering Conference Room)

Professor Lynn Gladden
University of Cambridge
Department of Chemical Engineering

"The Magnetic Resonance 'Toolkit' for Studying Two-Phase Flows"


[This is a CCNY/Columbia NSF-IGERT Soft Materials seminar]

ABSTRACT


Magnetic resonance (MR) has traditionally been thought of as a rather costly measurement technique, which offers relatively poor temporal and spatial resolution; applications in hydrodynamics have therefore been somewhat limited. This seminar will outline the principles of MR measurement techniques and how standard imaging techniques can be modified to reduce image acquisition times to ~10 ms. Implementation of these fast techniques means that we can now study dynamic systems directly and this opens up a wealth of interesting and exciting research opportunities. A significant part of our research programme in hydrodynamics is undertaken in collaboration with mathematicians and physicists and this seminar may provide an opportunity to identify systems for us to explore further with you. In studying hydrodynamics the key attributes of MR methods are that there is no need for introduction of tracers. Further, optically opaque and multi-phase systems can be addressed. Examples will be taken from a number of recent and ongoing projects - with the emphasis very much being on demonstrating the range of MR measurements that are possible in these fields of research:
  • crystallisation and formation of mushy layers
  • rheo-NMR and characterisation of emulsions
  • bifurcation phenomena in laminar and time-dependent flows through a sudden expansion
  • granular segregation in a rotating cylinder
  • granular dynamics in gas-solid fluidized beds
  • granular dynamics in vibro-fluidized beds
The seminar will conclude with a discussion of future directions in our research activities, which include translating some of these measurements to more flexible low field MR measurement systems, and strategies for further increasing temporal and spatial resolution.

BRIEF ACADEMIC/EMPLOYMENT BACKGROUND:

  • 1987 Ph.D, Physical Chemistry, University of Cambridge, 1987
  • 1987-1991: University Assistant Lecturer (UAL), Dept. of Chemical Engineering, University of Cambridge
  • 1995-1999: Reader in Process Engineering Science, Dept. of Chemical Engineering, University of Cambridge
  • 1999: Professor of Chemical Engineering Science, Dept. of Chemical Engineering, University of Cambridge
  • 2006-2008 Head of Department of Chemical Engineering
  • 2008-: Head of Department of Chemical Engineering and Biotechnology
RECENT RESEARCH INTERESTS:

Currently, major research interests lie in the development and application of magnetic resonance techniques in chemical engineering, with a particular interest in applied catalysis.