Turbulent Heat Transfer in a Square Duct with a Rough wall

摘要

Characteristics of the temperature field in forced convection turbulent heat transfer in a square duct with one rib-roughened wall have been investigated experimentally. Distributions of the mean temperature, primary flow velocity, intensities of the fluctuating temperature and velocity, correla- tion coefficients between the fluctuation temperature and velocity components, turbulent heat fluxes and turbulent shear stresses were measured, and they were compared with those obtained in a smooth-walled square duct to examine the influence of the rough wall on the characteristics of the temperature field