2012.11.12

Prof. Fredrik Lundell
         Associate Professor,
         Department of Mechanics,
         Royal Institute of Technology (KTH), Sweden

Title：Rotation of Non-Spherical Particles in Shear and Strain with Application to Paper and Other Biomaterials

Abstract：
The properties of a paper and other fibre based materials depend on the spatial and orientational distribution of the fibres. In a paper machine, the lowest concentration is as low as 1%. Consequently, 100kg of water is pumped around in the machine for every kg of the final product. An overview of the papermaking process will be given, focusing on the fluid mechanical aspects. Rotation of non-spherical particles in different flows will then be described theoretically/numerically and a number of experiments where different aspects are highlighted will be presented. In particular, new results on the effects of particle and fluid inertia will be presented. It turns out that the combinations of these two opens up a parameter space with rich dynamics, with multiple solutions and hysteresis. For triaxial particles, one can even get chaotic particle motion!

Schedule：16:00-17:20 November 12, 2012 (Mon)
Place：Room 232, 3rd floor, Engineering Bld #2, Hongo Campus

Attached file： The 119th open seminar.pdf