On the dependence of the lower thermospheric wind regime on the solar cycle

The lower thermosphere occupies the intermediate position between the overlying thermospheric layers, for which direct correlation of its parameters with solar variety variations is well established, and the underlying ones, where this correlation is mainly of an indirect character. Therefore, for understanding the mechanism of solar terrestrial correlation it is important to investigate the dependence of different atmospheric parameters in the lower troposphere, and of wind regime parameters in particular, on the solar activity. Several series of observations were used which include the results of meteor radar wind velocity measurements carried out in Obninsk complemented by the data obtained using the same technique at Jodrell Bank from 1953 to 1958 and in Kharkov from 1960 to 1963. The interannual variations of values averaged over these periods for prevailing wind velocities and semidiurnal harmonic amplitudes and also results for some months are presented. These results are discussed

Mathematical modeling of hydrodynamic processes in the liquid nucleus of an ingot

The article provides examples of physical and mathematical modeling of the process of motion of melt in the fluid nucleus of the hardening ingots of continuous casting in conductive method of electromagnetic mixing (CMEM). These models can be used while choosing rational parameters of CMEM machines and for development of continuous filling process control algorithms

Main methods of optimization of metal heating conditions

The article describes о range of problems of optimal те1аГ\. heating control. Analysis of main industrial technologies optimization methods in automobile construction and metallurgical production is conducted. The article shows effectiveness and advantages of the trunk asymptotic optimization method in solution of industrial optimization tasks