Abstract
The wall boundary layer is an inalienable part of the contours with heavy liquid metal coolants (HLMC) that are used in the fourth generation nuclear reactors. The properties of the wall boundary layer determine a reactor's efficiency and influence hydraulic characterictics and heat exchange. Characteristics of the wall boundary layer "HLMC-constructional material" have been studied by various techniques and methods at the Nizhny Novgorod State Technical University (NNSTU). The study included: - ultrasonic analysis; - determination of the contact thermal resistance; study of the influence of the wall boundary region characteristics on the MHD resistance of the HLMC flow. Due to the results of this research the modern model of the wall boundary layer in the medium of heavy metal coolants was built. The following characteristics were experimentally found in the wide range of parameters: - the magnitude of the contact thermal resistance of the wall boundary layer in the Peclet number range from Pe=260 to Pe=1430 with the oxygen concentration varied in the range from 10^<-7> to 10^0; - the dependences of the hydraulic loss coefficients on the Stuart criterion in the magnetic field.
