| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Accelerated Qualification of Nuclear Materials Integrating Experiments, Modeling, and Theories
|
| Presentation Title |
Dust Particle Impact on Plasma-facing Materials in Tokamaks: Insights from Molecular Dynamics Simulations |
| Author(s) |
Prashant Dwivedi |
| On-Site Speaker (Planned) |
Prashant Dwivedi |
| Abstract Scope |
The influence of dust particles on the performance and lifespan of PFMC in tokamaks is of utmost importance. Temperature and dust velocity are critical factors that determine the extent of dust-wall interactions. Elevated temperatures within tokamak environment can lead to the vaporization of dust particles upon collision with the wall, resulting in heightened erosion and damage.
In this study, we employ extensive MD simulations to explore atomic processes occurring during dust impacts on target walls at various velocities. The simulations involve large samples, comprising up to 200 million atoms, allowing for a comprehensive investigation of temperature and velocity as influential parameters.
The findings provide novel insights into the interactions between dust and PFM, elucidating how these interactions can induce modifications in the mechanical properties of the target material. Moreover, the study examines the underlying physical mechanisms involved in dust-wall interactions, encompassing phenomena such as plastic deformation, fragmentation, melting, and vaporization. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Modeling and Simulation, Nuclear Materials, Mechanical Properties |