Scaling laws and intermittency in cryogenic turbulence using SHREK experiment
| Autor: | Bernard Rousset, Joachim Peinke, Alain Girard, Michel Bon-Mardion, Jean-Paul Moro, Swapnil Kharche |
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| Přispěvatelé: | Service des Basses Températures (SBT ), Université Grenoble Alpes [2016-2019] (UGA [2016-2019])-Institut de Recherche Interdisciplinaire de Grenoble (IRIG), Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Service de Thermo-hydraulique et de Mécanique des Fluides (STMF), Département de Modélisation des Systèmes et Structures (DM2S), CEA-Direction des Energies (ex-Direction de l'Energie Nucléaire) (CEA-DES (ex-DEN)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-CEA-Direction des Energies (ex-Direction de l'Energie Nucléaire) (CEA-DES (ex-DEN)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Carl Von Ossietzky Universität Oldenburg, Carl Von Ossietzky Universität Oldenburg = Carl von Ossietzky University of Oldenburg (OFFIS) |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Physics
[PHYS]Physics [physics] Turbulence Reynolds number Order (ring theory) Lambda Rotation 01 natural sciences 010305 fluids & plasmas law.invention Physics::Fluid Dynamics symbols.namesake Flow (mathematics) law Intermittency 0103 physical sciences symbols 010306 general physics Flatness (cosmology) Mathematical physics |
| Zdroj: | Progress in Turbulence VIII Progress in Turbulence VIII, Sep 2018, Bertinoro, Italy Springer Proceedings in Physics ISBN: 9783030221959 |
| Popis: | A fundamental study of normal helium turbulence (He- I ) in von K\(\acute{a}\)rm\(\acute{a}\)n swirling flow generated with the help of one and only unique size facility called \(\mathbf {S}\)uperfluid \(\mathbf {H}\)igh \(\mathbf {RE}\)ynolds von \(\mathbf {K}\acute{a}\)rm\(\acute{a}\)n experiment (SHREK) available at CEA-Grenoble is presented here. This study comprises of measurements of instantaneous velocity using the hot wire anemometry technique for three different configurations of the flow such as co-rotation, clockwise counter rotation (hereafter called contra rotation) and counter-clockwise counter rotation (hereafter called anti-contra rotation). The maximum Taylor’s Reynolds Number, \(Re_{\lambda }\) for these measurements found to be up to 10000. A discussion on the aspect of intermittency is presented for the largest dataset available with the samples \(\mathcal {O}(10^{9})\). The probability density functions (PDF’s) of the velocity increments are discussed with its skewness and flatness along with the exponents of structure function up to certain order. These effects of various quantities of turbulence such as scales of turbulence, dissipation and \(Re_{\lambda }\) with respect to applied forcing is discussed. The scalings laws already established for classical turbulence are explored based on the present experimental data in cryogenic turbulence. |
| Databáze: | OpenAIRE |
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