A comparative study of Rayleigh-Taylor and Richtmyer-Meshkov instabilities in 2D and 3D in tantalum
Abstract
Driving a shock wave through the interface between two materials with different densities can result in the Richtmyer-Meshkov or Rayleigh-Taylor instability and initial perturbations at the interface will grow. If the shock wave is sufficiently strong, the instability will lead to plastic flow at the interface. Material strength will reduce the amount of plastic flow and suppress growth. While such instabilities have been investigated in 2D, no studies of this phenomena have been performed in 3D on materials with strength. Initial perturbations to seed the hydrodynamic instability were coined into tantalum recovery targets. Two types of perturbations were used, two dimensional (2D) perturbations (hill and valley) and three-dimensional (3D) perturbations (egg crate pattern). The targets were subjected to dynamic loading using the Janus laser at the Jupiter Laser Facility. Shock pressures ranged from 50 GPa up to 150 GPa and were calibrated using VISAR drive targets.
Additional Information
© 2017 AIP Publishing. Published Online: January 2017 Accepted: November 2016. The authors would like to thank the staff at the Jupiter Laser Facility at Lawrence Livermore National Laboratory for their help during our experimental campaign. This work was completed with the support of the NNSA through the HEDLP program, grant numbers DE-NA0001805 and DE-NA0001832.Attached Files
Published - 1_2E4971669.pdf
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Additional details
- Eprint ID
- 73556
- Resolver ID
- CaltechAUTHORS:20170119-133319310
- HEDLP program
- Department of Energy (DOE)
- DE-NA0001805
- Department of Energy (DOE)
- DE-NA0001832
- Created
-
2017-01-19Created from EPrint's datestamp field
- Updated
-
2021-11-11Created from EPrint's last_modified field
- Series Name
- AIP Conference Proceedings
- Series Volume or Issue Number
- 1793