Differentially heated turbulent channel flow two-point correlations

2024/11/12 by Marina Garcia-Berenguer, Garcia-Berenguer, Marina, Lucas Gasparino +5
Engineering · #FOS: Physical sciences #Fluid Dynamics (physics.flu-dyn) #Fluid Dynamics and Turbulent Flows

paper · pdf · doi:10.48550/arxiv.2411.07669

openalex publication_date 2024/11/12 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

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 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.

Related

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• Turbulent heat transfer in a channel flow at transitional Reynolds numbers
• Effect of temperature-dependent thermophysical properties on turbulent forced convection under constant heat flux boundary condition
• DNS of turbulent channel flow at very low Reynolds numbers
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