The formation and shedding of fluid vortices is an inevitable consequenceof movement for all but the smallest of swimming and flying organisms. Cananimals use these vortices to enhance locomotion? If so, can their methodsof vortex-enhanced propulsion be translated to engineered systems? Thistalk will describe experimental studies of jellyfish an...
Creator:
Dabiri, John O. (California Institute of Technology)
Created:
2010-06-02
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.
Experiments and simulations indicate that suspensions of swimming microorganisms can exhibit complex phenomena, including pattern-forming instabilities, large scale fluid motions and enhanced passive scalar transport. This talk is an overview of theoretical and computational work describing some of these phenomena. Emphasis will be placed on ana...
Creator:
Graham, Michael D. (University of Wisconsin, Madison)
Created:
2010-06-02
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.
When studying the mechanics of swimming and flying, engineers andscientists often pose questions in the form of optimization strategies. Thisapproach has been quite useful when trying to understand the kinematics ofinsect flight or the frequency that fish beat their tails. Understanding thekinematics and the morphology of animals that multitask ...
Creator:
Miller, Laura Ann (University of North Carolina, Chapel Hill)
Created:
2010-06-02
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.
Berman, Gordon Joseph (Princeton University); Breuer, Kenny (Brown University); Ewoldt, Randy H. (University of Minnesota, Twin Cities); Gadàªlha, Hermes (University of Oxford); Hu, Jifeng (University of Minnesota, Twin Cities); Janssen, Pieter Jan Antoon (University of Wisconsin, Madison); Kudrolli, Arshad (Clark University); Lang, Amy (University of Alabama); Larson, Ronald G. (University of Michigan); Lushi, Enkeleida (New York University); Masoud, Hassan (Georgia Institute of Technology); Nguyen, Hoa (Tulane University); O'Farrell, Clara (California Institute of Technology)
Created:
2010-06-02
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.
Most micro-organisms often swim in a variety of complex environments as their natural habitat. For instance, Paramecium tend to congregate and swim near the boundaries. We investigate the locomotion of Paramecium in confined geometries while comparing its motion in the un-bounded fluid. A modified theoretical model based on Taylor's sheet is dev...
Creator:
Jung, Sunghwan (Sunny) (Virginia Polytechnic Institute and State University)
Created:
2010-06-02
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.
The locomotion of biological microorganisms has been the object of much research over the last half of a century. Although significant progress has been made in the study of motion in Newtonian fluids, many biological cells such as bacteria often encounter viscous environments with suspended microstructures or macromolecules. The physics of micr...
Creator:
Brandt, Luca (Royal Institute of Technology (KTH))
Created:
2010-06-02
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.
There has been much recent interest in understanding thedynamics of low-Reynolds-number swimmers near no-slip boundaries and free capillarysurfaces. This talk will presenttheoretical ideas for studying the dynamics of such swimmerswithin the framework ofsimple two dimensional models. The 2D models are developedusing the methods of complex analys...
Creator:
Crowdy, Darren G. (Imperial College London)
Created:
2010-06-02
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.
For animals and machines alike, maintaining balance during flight is acrucial and demanding task. The need for airplane flight stability led toa schism between aviators who sought built-in, or passive, stability andthose who emphasized the need for active controls. How has this tensionplayed out for the first flyers, the insects? Our group combi...
Creator:
Ristroph, Leif Gibbens (Cornell University)
Created:
2010-06-02
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.
Keywords: locomotion, motion planning, verification, control, robotic birds, perchingAbstract: Locomotion in fluids (and on terrain) often involves complex nonlinear dynamics and non-trivial notions of stability including limit cycles and dynamically stable maneuvers. In this talk I will describe some new algorithms for automatically verifying s...
Creator:
Tedrake, Russ (Massachusetts Institute of Technology)
Created:
2010-06-02
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.
