Unraveling the Dynamics of Dusty Flows
| When |
Jun 03, 2025
from 11:00 to 12:00 |
|---|---|
| Where | MGN1 107 |
| Attendees |
Mohammed Houssem Kasbaoui |
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Turbulent flows laden with micron-sized dust particles are ubiquitous in engineering and environmental applications such as aeolian processes, dust storms, aerodynamics in dusty desert environment, industrial powder processing, and design of filter media. Depending on the concentration and size of the suspended dust, the dynamics of these flows may be vastly different from those of particle-free ones. Inertial dust (typical size > 10micron) suspended in turbulent or vortical flows tends to deviate from the carrier flow streamlines, which leads to complex dust cloud evolutions. Several questions remain open such as how and why inertial dust clusters in turbulence, how do it alter near-wall dynamics, and what is the impact on mass and momentum transport in the carrier phase.
With the growth of computing power, high-fidelity computational approaches may be able to bring answers to these questions. In this talk, I will review state-of-the-art methods, illustrate their comparative advantages, and their applications. Next, I will present our recent work on how inertial dust interferes with vortex dynamics in semi-dilute dust clouds using Euler-Lagrange simulations and Linear Stability Analysis. Further, I will discuss the impact of inertial dust on turbulent flow structures in ground-proximity. I will conclude with a discussion of new perspectives in theoretical modeling and computational analysis.