Scholarlink

Large eddy simulation (LES) of turbulent heat transfer in channel flow is used to investigate the heat transfer characteristics of a low-Prandtl-number fluid (Pr = 0.025). The simulation configurations are fully developed channel flow with uniform wall heating. Friction Reynolds numbers (Reτ), based on friction velocity and channel half-width, are 180 and 395. Spatiotemporal statistics of turbulent parameters, including velocity, temperature variance, and turbulent heat flux are analyzed. Additionally, key dimensionless parameters such as the turbulent Prandtl number, time constant ratio, and Nusselt number are obtained. LES results are compared with direct numerical simulation data, and visualizations of relevant parameters are presented. This study validates the computational feasibility of LES and contributes to the understanding of heat transfer characteristics in low-Prandtl-number fluids.

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Large Eddy Simulation of Heat Transfer in Low-Prandtl-Number Fluid

  • 会议论文

  • 发表日期：

    2026年

查看全文
  • Jie Wu,
  • Jiejin Cai,
  • Yanping Huang

摘要

Large eddy simulation (LES) of turbulent heat transfer in channel flow is used to investigate the heat transfer characteristics of a low-Prandtl-number fluid (Pr = 0.025). The simulation configurations are fully developed channel flow with uniform wall heating. Friction Reynolds numbers (Reτ), based on friction velocity and channel half-width, are 180 and 395. Spatiotemporal statistics of turbulent parameters, including velocity, temperature variance, and turbulent heat flux are analyzed. Additionally, key dimensionless parameters such as the turbulent Prandtl number, time constant ratio, and Nusselt number are obtained. LES results are compared with direct numerical simulation data, and visualizations of relevant parameters are presented. This study validates the computational feasibility of LES and contributes to the understanding of heat transfer characteristics in low-Prandtl-number fluids.