Вісники НТУ "ХПІ"

Постійне посилання на розділhttps://repository.kpi.kharkov.ua/handle/KhPI-Press/2494


З 1961 р. у ХПІ видається збірник наукових праць "Вісник Харківського політехнічного інституту".
Згідно до наказу ректора № 158-1 від 07.05.2001 року "Про упорядкування видання вісника НТУ "ХПІ", збірник був перейменований у Вісник Національного Технічного Університету "ХПІ".
Вісник Національного технічного університету "Харківський політехнічний інститут" включено до переліку спеціалізованих видань ВАК України і виходить по серіях, що відображають наукові напрямки діяльності вчених університету та потенційних здобувачів вчених ступенів та звань.
Зараз налічується 30 діючих тематичних редколегій. Вісник друкує статті як співробітників НТУ "ХПІ", так і статті авторів інших наукових закладів України та зарубіжжя, які представлені у даному розділі.

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2016 - 20173

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Автор: search.filters.author.Rezvaya, Kseniya SergeevnaМістить файли: Так

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Зараз показуємо 1 - 3 з 3
  • Ескіз
    Документ
    Mathematical modeling of hydrodynamic characteristics in the inlet of a reversible hydraulic machine based on mathematical models
    (НТУ "ХПИ", 2017) Drankovskiy, Viktor Eduardovich; Rezvaya, Kseniya Sergeevna
    Mathematical models that allow determining the hydrodynamic flow characteristics in the inlet of reversible hydraulic machines are considered. The features of the fluid flow are described. An analysis of the operating conditions of a reversible hydraulic machine, carried out during the design of the water passage, is made. Types of energy losses, taking into account the spatial effects of a viscous fluid, are determined. A group of mathematical models, oriented at different stages of design, is developed. A new way to the design of the water passage based on the experimental results is proposed. Specific programs for the design of the water passage of reversible hydraulic machines are considered. Features of mathematical models are defined.
  • Ескіз
    Документ
    The numerical research of the flow in the inlet of the highhead hydraulic turbine
    (НТУ "ХПІ", 2017) Rezvaya, Kseniya Sergeevna; Krupa, Evgeniy Sergeevich; Drankovskiy, Viktor Eduardovich; Potetenko, Oleg Vasilyevich; Tynyanova, Irina Ivanovna
    3D-methods for the calculation of flow are used in this work. The solid model of the inlet is created. The mesh of the tetrahedral type is constructed. The boundary conditions for the calculations in the program are given, namely: the rate in inlet of the spiral casing and pressure on an exit. The choice of the turbulence model was based on the tasks that were set earlier. The results of numerical research of three-dimensional flow of a fluid flow in the high-head radial-axial hydraulic turbine are presented. Calculations are conducted for prognostication of descriptions and optimization of form of water passage of hydraulic turbines. The calculation of coefficient of losses of kinetic energy in the elements of inlet of hydraulic turbine is conducted. The total energy losses in the inlet of the water passage using different applied program packages are determined. The comparison of the data, which was obtained by in the calculations and the experimental data, is produced. The distributions of the total pressure and static pressure are presented in this paper. The velocity distribution in the meridional sections is presented. The complex nature of fluid flow is described. The secondary fluid flow in the spiral casing of the hydraulic turbine is confirmed by calculations. This secondary motion in the spiral casing of the hydraulic turbine appears due to the complexity of the fluid flow. Conclusions about the results of the three-dimensional calculations are made. Using special programs in the design of hydraulic turbines can reduce the technological resources and time.
  • Ескіз
    Документ
    Calculating three-dimensional fluid flow in the spiral casing of the reversible hydraulic machine in turbine mode
    (НТУ "ХПИ", 2016) Drankovskiy, Viktor Eduardovich; Rezvaya, Kseniya Sergeevna; Krupa, Evgeniy Sergeevich
    One of the stages of a numerical research of water passage of the reversible hydraulic machine in turbine mode was described with program packages. Graphical results in the form of the velocity and pressure distributions in the predetermined modes of operation of reversible hydraulic machine were obtained. On the basis of these data can beobtained average kinematic parameters of the flow, which are determined in the inlet of calculation domain. Analysis of this numerical research was performed.