Hydrodynamic Features of Gas-Liquid Flow Movement in a Separation Device Plane Channel with an Oscillating Wall

In this paper, the movement of a gas-fluid flow in a plane channel with an oscillating wall was investigated. The aim of the research is to increase the efficiency of separation equipment by imposing the vibration impact on a gas-liquid flow. This purpose was achieved by applying the phenomenon of selective coagulation of a dropping liquid. The novelty of the proposed ap-proach concerns creating the mathematical model for determination of analytical dependences between the efficiency of the hydromechanical process and initial parameters of the separation device. As a result, quantitatively and qualitatively sufficient approximations for the scalar pres-sure and vector velocity fields were obtained with a permissible relative error in comparison with the results of numerical simulation. The presence of biharmonic fluctuation of particles was proved; besides, related dependencies for the calculation of vibration characteristics were ob-tained. Additionally, the paper presents the dependencies for identifying a range of thickness for a near-wall area. The system of dimensionless criteria was proposed for determining flow modes and relative trajectories of liquid droplets in a gas-fluid flow. The numerical simulation approach and related methodology of engineering calculations were proposed on the example of a plane channel of the separation device. Finally, the distance between adjacent zones of the pressure minimum was determined. As a result, it was found that this distance is equal to the wavelength of the vibrating impact to the flow that is an initial justification of further coagulation process of liquid droplets in a gas-liquid flow in a separation device

Rationale for the method of solving the problem of recognizing situations in airspace

У статті розглядаються питання, пов'язані з дослідженням методу формалізації знань про процес розпізнавання ситуацій порушення правил руху повітряними судами для використання отриманих результатів при розробці спеціального математичного та програмного забезпечення в перспективних комплексах засобів автоматизації..В статье рассматриваются вопросы, связанные с исследованием метода формализации знаний о процессе распознавания ситуаций нарушения правил движения воздушными судами для использования полученных результатов при разработке специального математического и программного обеспечения в перспективных комплексах средств автоматизации.The questions related to the development of a method of formalizing knowledge about the process of recognizing situations, violations of traffic regulations for the use of aircraft results in the development of special mathematical and software tools automate advanced complexes

Approach in relation to evaluation of the state of battle potential of military powers on basis of estimations of levels of financing of his constituents

У статті наведено підхід щодо оцінювання стану бойового потенціалу Збройних Сил на основі оцінок рівнів фінансування його складових.В статье приведен подход относительно оценивания состояния боевого потенциала Вооруженных Сил на основе оценок уровней финансирования его составляющих.In the article approach is resulted in relation to the evaluation of the state of battle potential of Military Powers on the basis of estimations of levels of financing of his constituents