Короткий опис (реферат):
Mechanical means which are directly related to
the information support path (locators, observation stations,
accompaniment, detection, localization, etc.) require special
attention within the framework of the technical channels of
receiving information. Their accurate and stable performance
is of the utmost importance. Loss of the mechanical properties
occurs during operation, that is material wear. A special role in
the development and study of technological systems,
characterized by high temperature process conditions (in
metallurgy, power engineering, mechanical engineering, etc.) is
featured to the develop-ment of rational mathematical models
of heat transfer processes. In practice there is a joint
(compound) or a complex heat transfer, which combines heat
conduction, convection and radiation heat transfer processes.
Mathematical modeling method of compound (radiationconvective)
heat transfer processes in techno-logical systems,
based on the numerical solution of multidimensional
differential heat conduction equation with complicated
boundary conditions has been introduced. And at the same
time finite-difference approximation of heat conduction
equation and boundary conditions is obtained by integrointerpolation
method (balance meth-od). A locally onedimensional
method of calculation based on heat exchange
process splitting in the spatial variables is applied to solve the
multidimensional problems of heat exchange. Heat transfer
calculations of complex heat exchange are recommended to
carry out on the base of the additive principle considering the
common difficulty of numerical implementation of heat
transfer problems, but when recording finite-difference
approximation of boundary conditions it is advantageous to
use the radiation heat exchange coefficient. The approaches
considered to mathematical modeling of compound heat
transfer processes can be used to investigate the thermal
conditions of the process equipment in metallurgy, power
engineering, mechanical engineering and other industries, as
well as in the students training of university specialties. Thus,
the solution of the fundamental problem of radiative heat
transfer in the formulation adopted here (i.e., when a discrete
consideration of temperature fields and optical constants is
practically possible), ultimately comes down to calculating the
angular coefficients (geometric radiation invariants)
considered system of surfaces
