Simulation-Driven Experiments of Macroscale Explosive Dispersal of Particles
Abstract
A series of explosive tests were completed at the Air Force Research Laboratory's blast pad facility. The six test articles include two bare charges of Composition B, three charges surrounded by an annulus of fine steel powder, and one charge surrounded by an annulus of fine tungsten powder. The experimental instrumentation includes four high-speed cameras from various viewpoints, fifty-four pressure transducers flush-mounted radially around the charge, six cylindrical momentum traps, and optical linear encoders. The objective of the test series is to enable validation efforts for high fidelity multiphase models being developed at the University of Florida Center for Compressible Multiphase Turbulence. The analysis included here enables an uncertainty analysis for the baseline bare charge configuration using current and legacy data. Additionally, pre-scoring the case for the multiphase liner shots was shown to have no discernible effect on the particle-gas instabilities observed. Preliminary data analysis is performed, with emphasis on the shock location time of arrival, peak pressure values, and high speed video analysis. Additional analysis and comparison to simulation results will be performed in future efforts.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 13, 2018
- Accession Number
- AD1063661
Entities
People
- Angela Diggs
- Chanyong Park
- Don Littrell
- Kyle T. Hughes
- Nam-ho Kim
- Raphael Haftka
- Sivaramakrishnan Balachandar