Berkeley Fluids Seminar
University of California, Berkeley
Bring your lunch and enjoy learning about fluids!
October 30, 2013
Dr. Debanjan Mukherjee (Mechanical Engineering, UC Berkeley)
Discrete Particle Simulations for Analysis of Colliding and Flowing Particulate Media
Flowing particulate media are ubiquitous in their presence in a wide range of industrial processes and in the environment - either as dry particulate media, or particle laden flows. This talk will address the development of a computer simulation tool based on neighbor-list collision driven particle dynamics to investigate such flowing particulate media. Such simulation techniques are based on the concept of individual 'particle' - which could be actual particles in some applications, or a meso-scale idealized computational unit in oth. A brief overview of the hierarchical modeling approach to represent coupled, multi-physical phenomena through a combination of models for the underlying physical interactions will be presented. Following which, the particular aspect of flow behavior in the presence of collisions will be explored using two specific examples. The first example will be on the analysis of the high velocity impact of stream of particles on a layer of material, which is a problem of interest in the analysis of erosive wear of manufactured surface coatings. The second example will be based on the deposition of flowing particulate spray on a target surface, which is a problem of interest in the analysis of particulate deposition-based manufacturing processes. This will be followed by an overview of aspects of two-way coupled particle-fluid interactions, and some examples from currently ongoing research on extending the existing simulation code library to tackle such two-way coupled problems will be discussed.
