title: Investigation of the Richtmyer-Meshkov instability with double perturbation interface in nonuniform flows.
abstract: A nonuniform SF6 gas flow initial condition has been actualized in the context of shock tube experiment for the Richtmyer-Meshkov instability study. Two kinds of amplitude have been used to design the membrane supports which initially materialize the gaseous interface. The visualizations of air/SF6 sinusoidal interfaces and shock wave propagations in the nonuniform field were obtained by Schlieren photography. Experiments are in very good agreement with simulations for the air/SF6 case, but due to the initial nonuniform effects, Sadot model and Zhang-Sohn theory are far beyond the experimental and calculation results.
authors.affiliation: Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang, Sichuan, People's Republic of China.
authors.forename: Jing-song
authors.initials: JS
authors.lastname: Bai
authors.forename: Jin-hong
authors.initials: JH
authors.lastname: Liu
authors.forename: Tao
authors.initials: T
authors.lastname: Wang
authors.forename: Li-yong
authors.initials: LY
authors.lastname: Zou
authors.forename: Ping
authors.initials: P
authors.lastname: Li
authors.forename: Duo-wang
authors.initials: DW
authors.lastname: Tan