For more information about this meeting, contact Changhe Qiao, Fei Wang, Lu Wang.
|Title:||How do dispersed inertial particles modify turbulent flows ?|
|Seminar:||CCMA PDEs and Numerical Methods Seminar Series|
|Speaker:||Said Elghobashi, University of California, Irvine|
|Turbulent flows laden with inertial particles are ubiquitous in nature (e.g. aerosols in clouds, and dust storms on Earth and Mars) and in industrial applications (e.g. liquid fuel and pulverized coal sprays in combustion chambers). Experimental and numerical studies of these flows are quite challenging due to the wide spectra of length- and time- scales of the dispersed particles in addition to the spectra of scales intrinsic to the carrier fluid turbulence. The two-way and and four-way nonlinear interactions between the dispersed particles and the turbulence result in complex multi-scale physical phenomena. The lecture focuses on the physical mechanisms of interactions between dispersed spherical particles and isotropic turbulence using Direct Numerical Simulation (DNS). Particles whose diameter is smaller than the Kolmogorov length scale are simulated as point particles. Larger particles with diameter of the order of Taylor microscale are fully resolved using the Immersed Boundary method.|
Room Reservation Information
|Date:||10 / 10 / 2014|
|Time:||03:30pm - 05:00pm|