2015/12/31 by Giorgio Krstulovic · 1 citation
Earth and Planetary Sciences · Mathematics · Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Compressibility #Direct numerical simulation #Homogeneous #Homogeneous isotropic turbulence #Intermittency #Isotropy #Mathematics #Mechanics #Meteorological Phenomena and Simulations #Physics #Quantum mechanics #Quantum, superfluid, helium dynamics #Reynolds number #Statistical physics #Turbulence #Universality (dynamical systems) #cond-mat.other
paper · pdf · doi:10.1103/physreve.93.063104
published as Phys. Rev. E 93, 063104 (2016)
arxiv created 2016/06/01 · openalex publication_date 2016/06/08 · arxiv updated 2016/06/15 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Low-temperature grid-generated turbulence is investigated by using numerical simulations of the Gross-Pitaevskii equation. The statistics of regularized velocity increments are studied. Increments of the incompressible velocity are found to be skewed for turbulent states. Results are later confronted with the (quasi) homogeneous and isotropic Taylor-Green flow, revealing the universality of the statistics. For this flow, the statistics are found to be intermittent and a Kolmogorov constant close to the one of classical fluid is found for the second-order structure function.