| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Real Time Imaging
|
| Presentation Title |
Microparticle impact and ignition in high-pressure oxygen |
| Author(s) |
Spencer V. Taylor, Zachary Cordero |
| On-Site Speaker (Planned) |
Spencer V. Taylor |
| Abstract Scope |
In the high-temperature, high-pressure turbines of rocket engines, metal particles can strike surfaces at high velocities and ignite, putting the turbomachinery at risk of ignition. In this work, we use a novel experimental process combined with numerical analysis to determine the critical conditions which cause particle ignition upon impact. We perform laser-induced particle impact tests (LIPIT) using impact velocities from 100 to 500 m/s and oxygen pressures from 1 to 100 atm, with advanced imaging capability which enables micron-scale spatial resolution and nanosecond-scale temporal resolution. Additionally, we use finite element simulations to analyze fine-scale particle deformation and adiabatic heating upon impact. We combine the experimental and numerical results to predict the resulting thermal history of the particle, and we determine the conditions which lead to thermal runaway and particle ignition. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Modeling and Simulation, Powder Materials, Environmental Effects |