Turbulence & Instability

[HEDS4-04] Experimental study of the bubble merger process induced by the strong blast-wave-driven RM instability

*Zhiyuan Li¹, Meng Li¹, Shaoyong Tu², Zhensheng Dai¹, Lifeng Wang¹, Yingkui Zhao¹ (1. Institute of Applied Physics and Computational Mathematics, 2. Laser Fusion Research Center, China Academy of Engineering Physics)

Bubble merger caused by the hydrodynamic instability is a main pathway for the turbulent transition in the fluids with narrowband initial interface perturbations. We have conducted an experiment about the bubble merger process induced by the strong blast-wave driven Richtmyer-Meshkov(RM) instability at the SG 100kJ laser facility. Our studies show that the mass diffusion effect should be included in the simulations to fit the experiment results.