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arXiv · 2411.07669

Differentially heated turbulent channel flow two-point correlations

Marina Garcia-Berenguer·Lucas Gasparino·Oriol Lehmkuhl·Ivette Rodriguez
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Abstract

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 Re{\tau}m = 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.

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Marina Garcia-Berenguer, Lucas Gasparino, Oriol Lehmkuhl, Ivette Rodriguez. 2024-11-12. Differentially heated turbulent channel flow two-point correlations. https://doi.org/10.23967/eccomas.2024.133

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