[Todos] Coloquios del Departamento de Física

[Pablo Dmitruk]

--------------------------------------------------------------------------

              COLOQUIOS DEL DEPARTAMENTO DE FÍSICA FCEyN - UBA


                          Charla, café y galletitas
                     En el Aula Federman, 1er piso Pabellón I,
                             Ciudad Universitaria

   Experimental study of the dynamics of material particles in a turbulent flow


                  El próximo jueves 15 de octubre a las 14 hs

                              Mickael Bourgoin

   Laboratoire des Ecoulements Geophysiques et Industriels, Grenoble, Francia


NOTA: La charla será en español.


RESUMEN:
Turbulent transport of material inclusions plays an important role in  
many natural and industrial situations. Being able to accurately model  
and predict the dynamics of dispersed particles transported by a  
turbulent carrier flow remains a challenge. One critical and difficult  
point is to correctly describe the turbulent dynamics of particles  
over a wide range of sizes and densities. We present high resolution  
acoustical Lagrangian measurements of inertial particles transported  
in a grid generated turbulent flow. The size of the particles and  
their density have been systematically varied. We will present  
Lagrangian statistics of the particles dynamics (velocity and  
acceleration), which we find to exhibit non trivial, size and density  
effects.