@article{773d77d0de6446ad8837b71e082c26b1,
title = "Preferential turbulence enhancement in two-dimensional compressions",
abstract = "When initially isotropic three-dimensional (3D) turbulence is compressed along two dimensions, the compression supplies energy directly to the flow components in the compressed directions, while the flow component in the noncompressed direction experiences the effects of compression only indirectly through the nonlinearity of the hydrodynamic equations. Here we study such 2D compressions using numerical simulations. For initially isotropic turbulence, we find that the nonlinearity can be insufficient to maintain isotropy, with the energy components parallel to the compression coming to dominate the turbulent energy, with a number of consequences. Among these are the possibilities for stronger and more easily sustained growth of turbulent energy than in 3D compressions and for an increasing turbulent Mach number even in a compression without thermal losses. ",
author = "Seth Davidovits and Fisch, {Nathaniel J.}",
note = "Funding Information: S.D. would also like to acknowledge the support of the US Department of Energy Fusion Energy Sciences Postdoctoral Research Program administered by the Oak Ridge Institute for Science and Education (ORISE) for the DOE. ORISE is managed by Oak Ridge Associated Universities under DOE Contract No. DE-SC0014664. This work was supported, in part, by NSF Grant No. PHY-1805316 and NNSA Grant No. 83228-10966 [Prime No. DOE (NNSA) DE-NA0003764]. Funding Information: This work was performed under the auspices of the US Department of Energy by the Lawrence Livermore National Laboratory under Contract No. DE-AC52-07NA27344. This document was prepared as an account of work sponsored by an agency of the United States government. Neither the US government nor Lawrence Livermore National Security, LLC, nor any of their employees makes any warranty, expressed or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the US government or Lawrence Livermore National Security, LLC. The views and opinions of authors expressed herein do not necessarily state or reflect those of the US government or Lawrence Livermore National Security, LLC, and shall not be used for advertising or product endorsement purposes. Publisher Copyright: {\textcopyright} 2020 American Physical Society.",
year = "2020",
month = nov,
day = "23",
doi = "10.1103/PhysRevE.102.053213",
language = "English (US)",
volume = "102",
journal = "Physical Review E",
issn = "2470-0045",
publisher = "American Physical Society",
number = "5",
}