One of the challenges in processing granular materials, whether on Earth or in space, is efficiently separating particles by size. This is essential for applications such as regolith refinement, powder reuse in additive manufacturing, and controlling reaction behavior in particulate systems.
At ESRIC, we are currently investigating a simple but effective method that uses a rotating cone to induce particle separation. In this setup, gravity and centrifugal effects interact to guide particles of different sizes and densities along distinct paths. While the mechanical system is minimal, its behavior is surprisingly rich and sensitive to small variations in flow rate, angle, and rotation speed.
A significant part of this work relies on numerical simulations. Using the Discrete Element Method combined with high-performance computing on MeluXina, we simulate how particle systems evolve under different setups and conditions. These simulations allow us to test ideas, uncover trends, and fine-tune system parameters before physical implementation.
We recently shared an overview of this work in a feature article by LuxProvide, where we discuss how simulation is helping shape the future of dry particle separation for both Earth and planetary use. You can read the article here:
🔗 Designing the Future of Dry Particle Separation
Looking ahead, we are preparing to explore new strategies inspired by Chladni patterns. These vibrational structures, typically formed on plates under resonance, may offer a novel way to passively steer granular flows. We are especially curious about their potential in reduced-gravity environments, where conventional separation tools may not perform as expected.
This research brings together simulation, experimentation, and design thinking with the aim of developing smarter, lighter, and more adaptable separation systems for current and future applications.
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