Open AccessInvestigating heat transfer in an upward flow of liquid metal in the mercury facility with a loop of natural circulation
Author(s) -
N. A. Luchinkin,
N. G. Razuvanov,
P. A. Sardov,
Olga Polyanskaya
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2057/1/012018
Subject(s) - natural circulation , mechanics , péclet number , nusselt number , heat transfer , thermodynamics , forced convection , reynolds number , turbulence , natural convection , convective heat transfer , heat transfer coefficient , materials science , physics
Research of heat transfer is performed in an upward flow of liquid metal in a vertical channel of rectangular cross-section under the condition of one-sided heating and in a vertical pipe in a mercury circuit with a natural circulation loop. Natural circulation loop enables measurements in mixed turbulent convection modes, which are inaccessible on a contour with a forced convection, that is, in the region of small Reynolds (Peclet) numbers of characteristics. Using a two-coordinate probe with a microthermocouple correlation sensor, profiles of averaged velocity and temperature and distribution of a wall temperature are obtained, and heat transfer coefficients are determined. Criterion dependences of Nusselt number on Peclet and Richardson are built. Experimental data on heat transfer are compared with similar data obtained earlier in a loop with a forced flow of mercury.