Goal. Investigation of the conditions of formation of operational tightness of the end of the output capillary - the rod of the ionization chamber with simultaneous provision of the temperature regime in the process of formation of the welded joint.
Practical importance. The analytical and numerical results obtained can be used in the study of the stress state and, respectively, to evaluate the strength and stiffness of curvilinear tubular structural elements, in particular, the pipeline bends and pipes of economizers.
Separate mathematical models for determining the temperature distribution in the elements of turbogenerators have been developed, which are described geometrically by an isotropic half-space and a heat-sensitive space with locally concentrated sources of heating. For this purpose, using the theory of generalized functions in a convenient form, we write the initial differential equations of thermal conductivity with boundary conditions.
The structural and functional diagrams of the thermoanemometric type sensor for measuring the mono- and biphasic (liquid + gas) medium by the pulsating nature of the flow are presented. The temperature distribution in the sensor environment is considered and the sensing elements are not in contact with the inner surface of the sensor body.
The method of determining the integral characteristics of the temperature field of a turbine generator rotor in the case of local overheating is proposed in relation to the study of its deflections and the level of vibration; Influence of thermophysical and geometrical parameters of rotor ТГВ-500-4 on its temperature field is investigated.
The thesis applies for the original geodynamical investigations of the Transcarpathians territory. New laser-digital techniques of tension and weather-temperature observations on the base of author’s implementations were used. Such techniques allow to observe and study sub-low geological processes and movements before, during and after earthquakes, create a of tension and weather-temperature data base, make complex analyses and processing of geophysical information.
A complete model of the induction shrink fit between a disk and shaft is presented. The model consists of a proposal of appropriate interference, checking the von Mises stress in the disk and shaft, mapping of the process of induction heating and determining the release revolutions. The methodology is illustrated by a typical example.
A numerical-analytical method of determining the heat field in a finite solid with taking into account the dependence of the coefficients of heat conductivity and of heat release on the temperature and the intensity of internal heat sources is suggested. The effectiveness of the combination of indirect methods of boundary and near-boundary elements with Kirchhoff transformation for partial linearization of nonlinear 3D problems of heat conduction, by which the process is modelled, is substantiated.