caa a22 4500 606198490 CHVBK 20210128100934.0 cr unu---uuuuu 210128e20150801xx s 000 0 eng 10.1007/s00348-015-2035-2 doi (NATIONALLICENCE)springer-10.1007/s00348-015-2035-2 The effects of initial conditions and circulation deposition on the inclined-interface reshocked Richtmyer-Meshkov instability [Elektronische Daten] [David Reilly, Jacob McFarland, Mohammad Mohaghar, Devesh Ranjan] An experimental study of a twice-accelerated Richtmyer-Meshkov instability, where reshock provides the second acceleration, focusing on the effects of initial conditions and circulation deposition is presented. Experiments were performed using the inclined shock tube facility at the Shock Tube and Advanced Mixing Laboratory. Three experimental cases are presented that have the same Atwood number, inclination angle, and Mach number, but are differentiated by their pre-reshock development time. Both Mie scattering and particle image velocimetry diagnostics were implemented. Velocity statistics were ensemble-averaged over instantaneous realizations for each case before and after reshock. Results show that while the mix width decreases after reshock, the interface length continues to increase because the reshock wave amplifies small-scale perturbations on the pre-reshock interface, resulting in greater mixing. A more developed interface also experiences greater circulation deposition after reshock. After reshock, the sign of the vorticity near the interface reverses due to a second application of baroclinic torque by the reshock wave. Velocity statistics showed that the cross-correlation ( $$\overline{u'v'}$$ u ′ v ′ ¯ ) is nonzero over much of the mixing layer, which indicates that shear and anisotropy are present. Turbulent kinetic energy spectra for the most developed case after reshock exhibited a $$k^{-5/3}$$ k - 5 / 3 inertial range. Springer-Verlag Berlin Heidelberg, 2015 Reilly David George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, 801 Ferst Drive, 30332, Atlanta, GA, USA aut McFarland Jacob Department of Mechanical and Aerospace Engineering, University of Missouri, E2412 Lafferre Hall, 65211, Columbia, MO, USA aut Mohaghar Mohammad George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, 801 Ferst Drive, 30332, Atlanta, GA, USA aut Ranjan Devesh George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, 801 Ferst Drive, 30332, Atlanta, GA, USA aut Experiments in Fluids Springer Berlin Heidelberg 56/8(2015-08-01), 1-16 0723-4864 56:8<1 2015 56 348 https://doi.org/10.1007/s00348-015-2035-2 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00348-015-2035-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Reilly David George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, 801 Ferst Drive, 30332, Atlanta, GA, USA aut NATIONALLICENCE 700 1- McFarland Jacob Department of Mechanical and Aerospace Engineering, University of Missouri, E2412 Lafferre Hall, 65211, Columbia, MO, USA aut NATIONALLICENCE 700 1- Mohaghar Mohammad George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, 801 Ferst Drive, 30332, Atlanta, GA, USA aut NATIONALLICENCE 700 1- Ranjan Devesh George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, 801 Ferst Drive, 30332, Atlanta, GA, USA aut NATIONALLICENCE 773 0- Experiments in Fluids Springer Berlin Heidelberg 56/8(2015-08-01), 1-16 0723-4864 56:8<1 2015 56 348