A unified view of elastic and elasto-inertial turbulence in channel flows at low and moderate Reynolds numbers
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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2023
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| _version_ | 1866909442600075264 |
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| author | Rota, Giulio Foggi Amor, Christian Clainche, Soledad Le Rosti, Marco Edoardo |
| author_facet | Rota, Giulio Foggi Amor, Christian Clainche, Soledad Le Rosti, Marco Edoardo |
| contents | The chaotic flow of elastic fluids at low Reynolds number (Re) is typically distinguished into elasto-inertial and elastic turbulence (EIT/ET). However, the clear separation among these two turbulent regimes in parallel flows with a gradual Re decrease remains elusive. Here, spanning Re over four orders of magnitude, we investigate the statistical and structural nature of the flows computed by fully resolved 3D numerical simulations, revealing that as inertia becomes sub-dominant all flows share similar dynamical properties. Supported by the results, we thus propose a unified view of fully developed ET and EIT in parallel flows. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2310_05340 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | A unified view of elastic and elasto-inertial turbulence in channel flows at low and moderate Reynolds numbers Rota, Giulio Foggi Amor, Christian Clainche, Soledad Le Rosti, Marco Edoardo Fluid Dynamics The chaotic flow of elastic fluids at low Reynolds number (Re) is typically distinguished into elasto-inertial and elastic turbulence (EIT/ET). However, the clear separation among these two turbulent regimes in parallel flows with a gradual Re decrease remains elusive. Here, spanning Re over four orders of magnitude, we investigate the statistical and structural nature of the flows computed by fully resolved 3D numerical simulations, revealing that as inertia becomes sub-dominant all flows share similar dynamical properties. Supported by the results, we thus propose a unified view of fully developed ET and EIT in parallel flows. |
| title | A unified view of elastic and elasto-inertial turbulence in channel flows at low and moderate Reynolds numbers |
| topic | Fluid Dynamics |
| url | https://arxiv.org/abs/2310.05340 |