Experimental research of temperature and velocity fields in high-temperature flow of liquid heavy metal coolant

Presented are the results of experimental research of temperature and velocity fields for lead and lead-bismuth coolant flows in channels having circular and annular cross sections under varying oxygen content in the coolant and varying characteristics of insulating coatings. Tests are performed under the following operating conditions: (1) lead-bismuth eutectic—temperature T = 400−520°C, thermodynamic oxygen activity a = 10⁻⁵–10⁰, average flow velocity of the coolant w = 0.12−1.84 m/s, value of magnetic induction B = 0−0.85 T, Reynolds number Re = (0.24–3.5) × 10⁵, Hartmann number Ha = 0−500, and Peclet number Pe = 320−4600; (2) lead coolant-T = 400−550°C, a = 10⁻⁵−10⁰, w = 0.1−1.5 m/s, Re = (2.36−2.99) × 10⁵, and Pe = 500−7000.