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| Autori principali: | , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2023
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| Soggetti: | |
| Accesso online: | https://arxiv.org/abs/2311.06713 |
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| _version_ | 1866916351796314112 |
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| author | Wani, Rauoof Verma, Mahendra Nirgudkar, Shashwat Tiwari, Sanat |
| author_facet | Wani, Rauoof Verma, Mahendra Nirgudkar, Shashwat Tiwari, Sanat |
| contents | In this letter, using energy transfers, we demonstrate a route to thermalization in an isolated ensemble of realistic gas particles. We performed a grid-free classical molecular dynamics simulation of two-dimensional Lenard-Jones gas. We start our simulation with a large-scale vortex akin to a hydrodynamic flow and study its non-equilibrium behavior till it attains thermal equilibrium. In the intermediate phases, small wavenumbers ($k$) exhibit $E(k) \propto k^{-3}$ kinetic energy spectrum whereas large wavenumbers exhibit $E(k) \propto k$ spectrum. Asymptotically, $E(k) \propto k$ for the whole range of $k$, thus indicating thermalization. These results are akin to those of Euler turbulence despite complex collisions and interactions among the particles. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2311_06713 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Hydrodynamic energy flux in a many-particle system Wani, Rauoof Verma, Mahendra Nirgudkar, Shashwat Tiwari, Sanat Fluid Dynamics In this letter, using energy transfers, we demonstrate a route to thermalization in an isolated ensemble of realistic gas particles. We performed a grid-free classical molecular dynamics simulation of two-dimensional Lenard-Jones gas. We start our simulation with a large-scale vortex akin to a hydrodynamic flow and study its non-equilibrium behavior till it attains thermal equilibrium. In the intermediate phases, small wavenumbers ($k$) exhibit $E(k) \propto k^{-3}$ kinetic energy spectrum whereas large wavenumbers exhibit $E(k) \propto k$ spectrum. Asymptotically, $E(k) \propto k$ for the whole range of $k$, thus indicating thermalization. These results are akin to those of Euler turbulence despite complex collisions and interactions among the particles. |
| title | Hydrodynamic energy flux in a many-particle system |
| topic | Fluid Dynamics |
| url | https://arxiv.org/abs/2311.06713 |