Differentially heated turbulent channel flow two-point correlations
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arXiv
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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2024
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| Subjects: | |
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| _version_ | 1866913914551271424 |
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| author | Garcia-Berenguer, Marina Gasparino, Lucas Lehmkuhl, Oriol Rodriguez, Ivette |
| author_facet | Garcia-Berenguer, Marina Gasparino, Lucas Lehmkuhl, Oriol Rodriguez, Ivette |
| contents | This study analyzes the behavior of a differentially heated channel flow by means of a direct numerical simulations (DNS) with variable thermophysical properties under low-speed conditions focusing on the impact of the temperature gradient on the turbulence structures near the channel walls. The simulations were conducted at a mean friction Reynolds number of Reτm = 400 with a temperature ratio between the walls of Thot/Tcold = 2. Results show significant differences between the hot and cold walls that lead to an increased heat transfer at the hot wall and a higher turbulent production in the cold wall. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2411_07669 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Differentially heated turbulent channel flow two-point correlations Garcia-Berenguer, Marina Gasparino, Lucas Lehmkuhl, Oriol Rodriguez, Ivette Fluid Dynamics This study analyzes the behavior of a differentially heated channel flow by means of a direct numerical simulations (DNS) with variable thermophysical properties under low-speed conditions focusing on the impact of the temperature gradient on the turbulence structures near the channel walls. The simulations were conducted at a mean friction Reynolds number of Reτm = 400 with a temperature ratio between the walls of Thot/Tcold = 2. Results show significant differences between the hot and cold walls that lead to an increased heat transfer at the hot wall and a higher turbulent production in the cold wall. |
| title | Differentially heated turbulent channel flow two-point correlations |
| topic | Fluid Dynamics |
| url | https://arxiv.org/abs/2411.07669 |