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has been cited by the following article:

• TITLE: Quantitative Visualization of the Thermal Boundary Layer of Forced Convection on a Heated or Cooled Flat Plate with a 30° Leading Edge Using a Mach-Zehnder Interferometer

  AUTHORS: Jun Liu, Atsuki Komiya

  KEYWORDS: Thermal Boundary Layer, Forced Convection, Heat Transfer Coefficient, Visualization, Mach-Zehnder Interferometer

  JOURNAL NAME: Journal of Flow Control, Measurement & Visualization, Vol.10 No.4, September 30, 2022

  ABSTRACT: This study focuses on the experimental measurements of the heat transfer coefficient over a flat plate with a 30° leading edge. Under forced convection by a hot/cold air and flow over a cooled/heated flat plate, the thermal boundary layer and its thickness are quantitatively visualized and measured using a Mach-Zehnder interferometer. In addition, the variation in the local heat transfer coefficient is evaluated experimentally with respect to the air flow velocity and temperature. Differences within the heat transfer performance between the plates are confirmed and discussed. As a result, the average heat transfer performance is about the same for the heated plate and the cooled plate under all air velocity conditions. This contrasts with the theoretical prediction in the case of low air velocity, the reason considered was that the buoyancy at the 30°leading edge blocked air from flowing across the surface of the plate.