Seedling project on the simulation of reactive material particle combustion in high-explosive environments
Abstract
Powders of reactive material (RM) particles are under investigation for use in high-explosive (HE)charges due to the large amount of energy that can be released when they burn. However, effectively utilizing the full potential of these RM powders is challenging because their ignition and combustion processes are not well understood. In some circumstances the RM does not ignite, which significantly reduces the performance of the charge. Increased knowledge of the fundamental science of RM-enhanced materials, including scale effects and the physical processes of how the RM ignites and burns, is necessary to design and tailor RM-enhanced energetic materials for specific applications. Numerical simulation can provide significant insight into these basic fundamental issues.DESIM is a state-of-the-art code developed by the proposer for simulating and exploring the physics of coal mine explosions. The models and equations solved by DESIM are unique in that they can robustly simulate the interaction between highly packed particle beds and very strong blast waves. However, the RM combustion models and equation-of-state implemented in DESIM are only appropriate for simulating coal mine explosions. The proposed seed project will implement combustion models for RM and equations-of-state applicable to high-explosive conditions into the DESIM code. These extensions are necessary to simulate the afterburning processes of RM particles dispersed by HE charges. The reactive material will initially be focused on aluminum particles due to the availability of ignition and burning data over a wide variety of conditions in the literature. The WSD equation-of-state model will be implemented to compute realistic temperature and heat transfer rates to the dispersing RM particles. Finally, the DESIM code will be used to demonstrate its robustness and unique capabilities to model and understand the basic physics of the afterburning processes of RM particles.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Aug 28, 2018
- Source ID
- FA95501810389
Entities
People
- Ryan Houim
Organizations
- Air Force Office of Scientific Research
- United States Air Force
- University of Florida