Formation of power-law scalings of spectra and multiscale coherent structures in the near-field of grid-generated turbulence
| Autor: | John Christos Vassilicos, Tatsuya Yasuda, Susumu Goto |
|---|---|
| Přispěvatelé: | Department of Aeronautics, Imperial College London, Department of Material and Life Science, Graduate School of Engineering, Osaka University, Osaka University [Osaka], Laboratoire de Mécanique des Fluides de Lille – Kampé de Fériet - UMR 9014 (LMFL), Centrale Lille-ONERA-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Arts et Métiers Sciences et Technologies, HESAM Université (HESAM)-HESAM Université (HESAM), HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM)-HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM) |
| Rok vydání: | 2020 |
| Předmět: |
[PHYS]Physics [physics]
Fluid Flow and Transfer Processes Physics Turbulence [SPI.FLUID]Engineering Sciences [physics]/Reactive fluid environment Computational Mechanics Near and far field Mechanics 01 natural sciences Power law Instability Spectral line 010305 fluids & plasmas Vortex Physics::Fluid Dynamics Shear (sheet metal) [SPI]Engineering Sciences [physics] Modeling and Simulation 0103 physical sciences 010306 general physics Energy (signal processing) |
| Zdroj: | Physical Review Fluids Physical Review Fluids, American Physical Society, 2020, 5 (1), ⟨10.1103/PhysRevFluids.5.014601⟩ Physical Review Fluids, 2020, 5 (1), ⟨10.1103/PhysRevFluids.5.014601⟩ |
| ISSN: | 2469-990X |
| Popis: | International audience; We investigate the streamwise evolutions of energy and pressure spectra along the shear-layer region of very near-field grid-generated turbulence. The energy and pressure spectra evolve significantly in this near field. The shear-layer and vortex-shedding frequencies appear immediately in different spectra but the shear-layer's spectral signature is very soon replaced by a broad power-law |
| Databáze: | OpenAIRE |
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