New experimental campaign - Investigation of Temperature Fluctuations in a Fully Developed Channel Flow

Dr. Mohit Sharma and colleagues have performed turbulent heat transfer experiments with the heated thin foil cooled with a turbulent flow of water in a square duct. The thickness of the foil is 25 µm. Temperature fields were measured at variable Reynolds numbers, cooling water temperatures, and foil heating powers. Figure 1. shows instantaneous temperature field on the heated foil obtained with Infrared camera. Several thousand instantaneous images are taken in each measurement to obtain time-averaged properties of the turbulence under the foil.

Fig.1: Instantaneous temperature field at the outlet window 200 mm × 20 mm.