Authors & Affiliations
Chernysh D.Yu., Biryukov D.A., Luchinkin N.A., Belyaev I.A.
Joint Institute for High Temperatures of the Russian Academy of Sciences, Moscow, Russia
Biryukov D.A. – Senior Researcher, Cand. Sci. (Techn.), Joint Institute for High Temperatures of Russian Academy of Sciences.
Luchinkin N.A. – laboratory assistant, Joint Institute for High Temperatures of Russian Academy of Sciences.
Belyaev I.A. – Head of laboratory, Cand. Sci. (Techn.), Joint Institute for High Temperatures of Russian Academy of Sciences.
The article describes an experimental study of heat transfer during the descending flow of a liquid metal (mercury) in a circular channel with uniform heating for different angles of inclination from the vertical under the action of a transverse magnetic field and without its influence. At the experimental stand RK-3 "HELMEF"; the fields of the averaged and pulsating temperature were measured by the probe method. Using these data, distributions of local and average heat transfer coefficients were obtained. The obtained data were presented in the form of temperature fields, graphs of the distribution of the dimensionless temperature on the channel wall and compared with the currently available data from other works.
In the experimental study of heat transfer in mixed convection of liquid metal in inclined channels in the presence of a magnetic field, a configuration with a magnetic field transverse with respect to the inclined channel was investigated for the first time.
Without the influence of the magnetic field in the investigated range of regime parameters, the effect of thermogravitational convection is significant, which leads to a loss of symmetry of the temperature fields in the cross section, the formation of zones of deteriorated and improved heat transfer. The transverse magnetic field significantly changes the flow characteristics, leading to the formation of local maxima of the wall temperature due to the Hartmann effect, while the effect of thermogravity is hardly noticeable.
liquid metal, mercury, magneto hydrodynamics (MHD), heat transfer, probe measuring, inclined channel, mixed convection
1. Chernysh D.Yu., Luchinkin N.A., Belyaev I.A. Eksperimental'noe issledovanie teploobmena pri smeshannoy MGD-konvektsii zhidkogo metallav naklonnom kanale [Experimental study of heat transfer in mixed MHD-convection of liquid metallove by an inclined channel]. Teplovye protsessy v tekhnike - Heat engineering processes, 2018, vol. 10, no. 3-4, pp. 101—106.
2. Rachkov V.I., Sorokin A.P., Zhukov A.V. Teplogidravlicheskie issledovaniya zhidkometallicheskikh teplonositeley v yadernykh energeticheskikh ustanovkakh [Heat-hydraulic studies of liquid metal coolants in nuclear power plants]. Teplofizika vysokikh temperatur - High Temperature, 2018, vol. 56, no. 1, pp. 121—136.
3. Petukhov B.S., Polyakov A.F., Leontyev A.I. Teploobmen pri smeshannoy turbulentnoy konvektsii [Heat transfer in mixed turbulent convection]. Moscow, Nauka Publ., 1986.