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Документ Перспективы применения импульсных струй жидкости для тушения газовых факелов(НТУ "ХПИ", 2013) Семко, А. Н.; Бескровная, М. В.; Украинский, Ю. Д.; Виноградов, С. А.; Грицына, И. Н.Experimental studies of putting out of gas blowout by means of high-speed impulse liquid jets generated by a powder pulse-jet water canon have been carried out. The speed of impulse jet depending on charge energy ranged in the experiments from 300 to 600 m/s. The speed of the head section of the jet has been measured directly before the torch by means of a non-contact laser speed measuring device, the jet photographing has been carried out. It has been shown that around the high-speed liquid impulse jet in the air is formed a high-speed cloud of large cross-section splashes that efficiently knocks down the flame of the gas torch at distances of 5-20 m from the unit.Документ Підвищення екологічної безпеки експлуатації систем водопідготовки і водоочищення в теплоенергетиці(НТУ "ХПІ", 2013) Батлук, В. А.; Романцов, Е. В.Methodology of authentication and classification of risks which arise up in the systems of water preparation and water purification in power engineering on the stage of planning and exploitation is developed. Criticism of the system is offered to estimate on those states in which this system can be. Developed matrix of combinations of elements of the system of water preparation and water purification in power engineering by which expediently to conduct the analysis of risks taking into account probability of refusal of every element. Developed idealised, virtual system of water preparation and water purification, that enables to develop general approaches and scientifically ground them by a probability and mathematical statistics theory.Документ Перспективи розвитку схемо-технічних рішень зовнішнього електропостачання тягових підстанцій залізниць(НТУ "ХПІ", 2013) Доманський, Ілля ВалерійовичOn the basis of analysis of classic charts of feed of haulings ubstations of railways from grids conceptual directions of development of electric net works of external power supply of hauling substations are worked out in the conditions of market economy and normative requirements electroenergy of Ukraine, which allows to provide energy keeping their work.Документ Типізація та моделювання гідравлічних модулів з одноштоковим гідравлічним циліндром(НТУ "ХПІ", 2013) Іваніцькая, О. П.All variety of hydraulic throttle actuators with hydraulic cylinders with a rod can be reduced to 16 hydraulic modules, depending on the direction of movement of the piston, the direction of the load, the presence or absence of restriction (or flow control), and its location in the inlet and drain pipes. Mathematical model of the 16 main types of hydraulic modules with vertical and horizontal hydraulic cylinder with a piston rod.Документ Математична постановка і числовий аналіз задачі про рух повітряного потоку в циклоні(НТУ "ХПІ", 2013) Дорундяк, Л. М.; Лютий, Є. М.; Тисовський, Л. О.; Ляшеник, А. В.The complete set of equations for the fluid dynamics of air flow of air in the cyclone. Recorded boundary conditions on the walls of the cyclone and the exhaust pipe. Performed a numerical analysis of the problem and obtained the trajectory of the air flow.Документ Дослідження робочого процесу вихрового ступеня за допомогою обчислювального експерименту(НТУ "ХПІ", 2013) Ніколаєнко, Людмила Михайлівна; Лугова, Світлана Олегівна; Салтанов, Станіслав Ігоревич; Котенко, Олександр ІвановичIn this article the analysis of existing methods of calculation of the characteristics of the vortex stage. With the use of the software product of ANSYS CFX 12.0 is a numerical study of the flow in the liquid part of the vortex stage of open type with side channel for a different number of blades, received by the flow pattern and the integral characteristics of the vortex extent.Документ Дослідження системи управління вібраційним об'єктом(НТУ "ХПІ", 2013) Мигущенко, Руслан Павлович; Кропачек, Ольга Юріївна; Семенченко, Анастасія Сергіївна; Матяш, Катерина ВолодимирівнаThe paper deals with the construction management industry vibrating object. In order to develope the control system chosen object of study, the analysis of its operation, reviewed and analyzed the possible models under consideration of the objects elected in the major areas of research.Документ Функция Ламберта в задаче баллистики материальной точки(НТУ "ХПИ", 2013) Ольшанский, В. П.; Ольшанский, Станислав ВасильевичIt is shown that the use of the Lambert function and tables greatly simplifies the calculation of range and other parameters of the trajectory of the motion of a particle in a gas medium with a linear resistance.Документ Оцінка ефективності інформаційної технології предметно-орієнтованого математичного моделювання(НТУ "ХПІ", 2013) Межуєв, В. І.The evaluation of effectiveness of the Information Technology of Domain-Specific Mathematical Modeling (ITDSMM) is given. The reduction of amount of operations needed for development of metamodels in the case of using ITDSMM is proven. The optimization task of choosing the most effective information technology by selection and comparison of the multiple features in herent to the DSM, DSMM and UML technologies is solved.Документ Расчётный метод исследования пульсаций давления в сервоприводе регулятора дизеля(НТУ "ХПИ", 2013) Грицюк, Александр Васильевич; Григорьев, Александр Львович; Врублевский, Александр Николаевич; Овчинников, Алексей АлександровичAnalyzed the order of the controller of hydraulic type, equipped with a servo-controlled load-spool. The method to study the steady vibrations arising in the cavities and control elements for operation of the engine.Документ Модель рабочего процесса эрлифта с учетом структуры газожидкостных образований снарядного водовоздушного потока(НТУ "ХПИ", 2013) Кононенко, Анатолий Петрович; Калиниченко, Валерий ВикторовичThe mathematical model of operating process of the airlift is worked out with the projectile structure of the water-air stream in a lifting pipe taking into account the structure of the gas-liquid formations, that allows to define both the quantitative hydrodynamic parameters of the two-phase mixture and calculation descriptions of lift. Adequacy of mathematical model is confirmed by data of experimental researches of work of the airlift.Документ Визначення критерія кавітації лабіринтно-гвинтового насоса(НТУ "ХПІ", 2013) Лебедєв, Антон ЮрійовичThe method of calculation and value of criterion of cavitations of labyrinth-spiral pump is resulted in the article. The analysis of influence of structural and working parameters of pump and properties of working liquid is conducted on this criterion. Finding allows during the design of such pumps to estimate probability of origin of cavitations on his entrance.Документ Численное моделирование рабочего цикла дизеля с непосредственным впрыском. Прогнозирование эмиссии сажи и оксидов азота(НТУ "ХПИ", 2013) Левтеров, Антон Михайлович; Левтерова, Людмила ИвановнаThis article discusses the construction of a mathematical model of the operating cycle of diesel engine with direct injection. This paper also provides that result of modeling becomes possible predict the performance of diesel engine on traditional and alternative fuels with the emission of harmful substances in the exhaust gases, including carbon black, which is particularly important for this type of piston engines.Документ Совершенствование гидроимпульсаторов изменением гидравлических параметров ударного трубопровода(НТУ "ХПИ", 2013) Кононенко, Анатолий Петрович; Овсянников, Владимир Павлович; Оверко, М. В.Perfection of working process of the hydraulic impulsator by change of parametres of the shock pipeline by means of the jet diode is offered. The received efficiency by a graphic method and a method of numerical modelling in the environment of package MatLab is shown. The estimation of the received results and a direction of the further researches is presented.Документ Моделирование течения крови в патологически искривленных сосудах(НТУ "ХПИ", 2013) Оверко, В. С.; Бескровная, М. В.Mathematical simulation of the blood flow in the pathologically curved blood vessels was performed. Influence of degrees of the curvature by the intensity and the features of the secondary and the reverse blood flow in the vessels at different times cardiac cycle was determined. The loss pressure for different level of the pathological curvature was defined.Документ Анализ математических моделей механизма сажеобразования при сжигании углеводородных топлив(НТУ "ХПИ", 2013) Левтеров, Антон Михайлович; Левтерова, Людмила ИвановнаThis article discusses the construction of a mathematical model of the operating cycle of diesel engine with direct injection. This paper also provides that result of modeling becomes possible predict the performance of diesel engine on traditional and alternative fuels with the emission of harmful substances in the exhaust gases, including carbon black, which is particularly important for this type of piston engines.Документ Сравнительный анализ двух подходов к исследованию параметрических колебаний ортотропных пластин сложной формы(НТУ "ХПИ", 2013) Мазур, Ольга СергеевнаParametric vibrations of the orthotropic plates with complex form and various boundary conditions are studied by two approaches. The first method uses the movement equations in terms of displacements; the second approach is based on using the equations in mixed form. The results obtained by the presented algorithms are compared for T-plate.Документ Метод визначення параметрів синусоїдальних відбивачів інфрачервоних обігрівачів(НТУ "ХПІ", 2013) Максимова, М. О.The method of determining of rational parameters of the form and location of sinusoidal infra-red reflectors with the beforehand set properties for heating technical and technological objects are obtained. The algorithms of modeling of motion of reflected rays are created to be able to control the intensity of thermal stream.Документ Математическая модель дифракции волн на периодической плоскопараллельной системе импедансных лент(НТУ "ХПИ", 2013) Душкин, В. Д.The mathematical model of E-polarized and H-polarized waves diffraction on periodic multilayer system of impedance tapes had been built. This model is based on the basis of a system of singular boundary integral equations of the first and second kind. The method of integral operator's parametric representations had been used. The numerical solution of the obtained system of integral equations can be obtained with the help of discrete singularities method.Документ Математична модель визначення шорсткості поверхні при абразивній обробці(НТУ "ХПІ", 2013) Новіков, Федір Васильович; Нежебовський, В. В.; Шкурупій, Валентин ГригоровичThe results of theoretical studies of the formation of surface roughness during abrasive machining. The classification structures of the rough surface layer. The basic terms of reducing the surface roughness and practical recommendations for the effective implementation of methods of abrasion.