Academic literature on the topic 'Моделювання проточних частин'
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Journal articles on the topic "Моделювання проточних частин"
Арсірій, В. А., and Б. А. Савчук. "Реконструкція турбін методом аналогового моделювання, зображення структури потоку і вдосконалення частин потоку." Refrigeration Engineering and Technology 54, no. 2 (December 11, 2018): 57–60. http://dx.doi.org/10.15673/ret.v54i2.1105.
Full textКоновалов, Дмитро Вікторович, and Галина Олександрівна Кобалава. "ЧИСЕЛЬНЕ МОДЕЛЮВАННЯ ПРОТОЧНОЇ ЧАСТИНИ МАЛОВИТРАТНОГО АЕРОТЕРМОПРЕСОРА ДЛЯ ПРОМІЖНОГО ОХОЛОДЖЕННЯ ЦИКЛОВОГО ПОВІТРЯ ГАЗОТУРБІННОГО ДВИГУНА." Aerospace technic and technology, no. 4 (August 31, 2019): 31–38. http://dx.doi.org/10.32620/aktt.2019.4.06.
Full textПастушенко, А. С. "МОДЕЛЮВАННЯ АЕРОДИНАМІЧНО РАЦІОНАЛЬНОГО РОЗПИЛЮВАЛЬНОГО ПРИСТРОЮ." СІЛЬСЬКОГОСПОДАРСЬКІ МАШИНИ, no. 46 (May 29, 2021): 93–102. http://dx.doi.org/10.36910/acm.vi46.485.
Full textSpirintsev, V., D. Spirintsev, and O. Spirintseva. "MODELING THE FLOW PART OF THE COMPRESSOR CASE USING METHOD OF DISCRETE INTERPOLATION." Modern problems of modeling 20 (February 16, 2021): 184–93. http://dx.doi.org/10.33842/2313-125x/2021/20/184/193.
Full textDissertations / Theses on the topic "Моделювання проточних частин"
Крупа, Євгеній Сергійович, and Д. Ю. Бондаренко. "Вдосконалення проточних частин гідротурбін за допомогою моделювання тривимірної течії в'язкої рідини." Thesis, Національний технічний університет "Харківський політехнічний інститут", 2018. http://repository.kpi.kharkov.ua/handle/KhPI-Press/48728.
Full textРєзва, Ксенія Сергіївна. "Удосконалення проточних частин високонапірних оборотних гідромашин на основі чисельного моделювання їх гідродинамічних характеристик." Thesis, Національний технічний університет "Харківський політехнічний інститут", 2019. http://repository.kpi.kharkov.ua/handle/KhPI-Press/40009.
Full textThesis for granting the Degree of Candidate of Technical sciences in speciality 05.05.17 – Hydraulic machines and hydropneumatic units. – National Technical University "Kharkiv Polytechnic Institute", 2019. The tеhesis is devoted to the solution of the scientific and practical problem of improvement of the water passages of the high-pressure reversible hydraulic due to calculation and analysis their hydrodynamic characteristics. Based on the review of the trends in the development of hydropower engineering in Ukraine and given the role of high-pressure reversible hydraulic machines in the United Power System, it was noted that the designing a new flow parts is topical task. Advantages and disadvantages of the existing methods for research hydrodynamic processes in water passages of reversible hydraulic machines were identified after their analysis. The results of the calculation of the hydrodynamic characteristics of the elements of the water passages based on the method of averaged dimensionless parameters using the example of reversible hydraulic machines OPO200-B-100 and OPO500-B-100 were demonstrated. The mathematical model of the hydraulic machine working process based on a block-hierarchical approach was used to study the energy balance in the turbine and pump modes of hydraulic machines. The influence of the geometrical parameters of the elements of the water passage on the performance was determined: how the angle of flow in the spiral casing (cп ), the height of the wicket gate (b0 D) and the shape of the wicket gate profile influence the value of the coefficient resistance in the wicket gate. A numerical study of the three-dimensional flow of fluid in the water passage of high-pressure reversible hydraulic machines was carried out using the CFD software. This program allows determining the character of the flow and presenting the fields of distribution of velocity components, pressure and streamlines. The balances of energy were compiled: for the OPO200-B-100 in the turbine and pump operation modes, for the OPO500-B-100 in the turbine operation mode. It is noted that the distribution of losses on the elements of the water passage is not uniform: for the OPO200-B-100, the greatest part of the total losses are losses in the runner (about 56%), for OPO500-B-100 - losses in the inlet (about 62%). The main points for determining the optimal operating mode of the reversible hydraulic machine are described. The modified inlet for low-speed high-pressure hydraulic machine OPO500-B-100 was proposed and investigated to increase energy performance of hydraulic machine. The spiral casing was expanded, the number of stay vane blades and wicket gate blades were reduced to 16. As a result of the calculations of the modified inlet, the obtained results showed that the second variant made it possible to better align the elements of the water passage and the hydraulic efficiency increased by 2 %.
Рєзва, Ксенія Сергіївна. "Удосконалення проточних частин високонапірних оборотних гідромашин на основі чисельного моделювання їх гідродинамічних характеристик." Thesis, Національний технічний університет "Харківський політехнічний інститут", 2018. http://repository.kpi.kharkov.ua/handle/KhPI-Press/40011.
Full textThesis for granting the Degree of Candidate of Technical sciences in speciality 05.05.17 – Hydraulic machines and hydropneumatic units. – National Technical University "Kharkiv Polytechnic Institute", 2019. The tеhesis is devoted to the solution of the scientific and practical problem of improvement of the water passages of the high-pressure reversible hydraulic due to calculation and analysis their hydrodynamic characteristics. Based on the review of the trends in the development of hydropower engineering in Ukraine and given the role of high-pressure reversible hydraulic machines in the United Power System, it was noted that the designing a new flow parts is topical task. Advantages and disadvantages of the existing methods for research hydrodynamic processes in water passages of reversible hydraulic machines were identified after their analysis. The results of the calculation of the hydrodynamic characteristics of the elements of the water passages based on the method of averaged dimensionless parameters using the example of reversible hydraulic machines OPO200-B-100 and OPO500-B-100 were demonstrated. The mathematical model of the hydraulic machine working process based on a block-hierarchical approach was used to study the energy balance in the turbine and pump modes of hydraulic machines. The influence of the geometrical parameters of the elements of the water passage on the performance was determined: how the angle of flow in the spiral casing (cп ), the height of the wicket gate (b0 D) and the shape of the wicket gate profile influence the value of the coefficient resistance in the wicket gate. A numerical study of the three-dimensional flow of fluid in the water passage of high-pressure reversible hydraulic machines was carried out using the CFD software. This program allows determining the character of the flow and presenting the fields of distribution of velocity components, pressure and streamlines. The balances of energy were compiled: for the OPO200-B-100 in the turbine and pump operation modes, for the OPO500-B-100 in the turbine operation mode. It is noted that the distribution of losses on the elements of the water passage is not uniform: for the OPO200-B-100, the greatest part of the total losses are losses in the runner (about 56%), for OPO500-B-100 - losses in the inlet (about 62%). The main points for determining the optimal operating mode of the reversible hydraulic machine are described. The modified inlet for low-speed high-pressure hydraulic machine OPO500-B-100 was proposed and investigated to increase energy performance of hydraulic machine. The spiral casing was expanded, the number of stay vane blades and wicket gate blades were reduced to 16. As a result of the calculations of the modified inlet, the obtained results showed that the second variant made it possible to better align the elements of the water passage and the hydraulic efficiency increased by 2 %.
Юхименко, Микола Петрович, Николай Петрович Юхименко, Mykola Petrovych Yukhymenko, Артем В`ячеславович Білодід, Артем Вячеславович Белодед, Artem Viacheslavovych Bilodid, Василь Анатолійович Смирнов, Василий Анатольевич Смирнов, and Vasyl Anatoliiovych Smyrnov. "Оптимізація проточної частини пневмокласифікатора методом комп'ютерного моделювання." Thesis, Видавництво СумДУ, 2012. http://essuir.sumdu.edu.ua/handle/123456789/25817.
Full textМоскаленко, В`ячеслав Васильович, Вячеслав Васильевич Москаленко, Viacheslav Vasylovych Moskalenko, Микола Іванович Сотник, Николай Иванович Сотник, and Mykola Ivanovych Sotnyk. "Результати моделювання течії рідини у проточній частині відцентрового насосу." Thesis, Сумський державний університет, 2016. http://essuir.sumdu.edu.ua/handle/123456789/45594.
Full textКрупа, Євгеній Сергійович, and Владлен Олександрович Недовєсов. "Чисельне моделювання просторового потоку в проточній частині гідротурбіни РО 310." Thesis, Національний технічний університет "Харківський політехнічний інститут", 2019. http://repository.kpi.kharkov.ua/handle/KhPI-Press/48732.
Full textМатвiєнко, Ольга Анатолiївна, Ольга Анатольевна Матвиенко, Olha Anatoliivna Matviienko, and І. С. Рибальченко. "Моделювання кавітаційної течії в проточній частині осьового насоса з лопатевою системою типу НР." Thesis, Сумський державний університет, 2016. http://essuir.sumdu.edu.ua/handle/123456789/45560.
Full textАвдєєва, Олена Петрівна. "Об'єктно-орієнтована комплексна оптимізація проточної частини потужних парових турбін." Thesis, НТУ "ХПІ", 2015. http://repository.kpi.kharkov.ua/handle/KhPI-Press/19225.
Full textThesis for degree of Candidate of Sciences in Technique for speciality 05.05.16 – turbomachine and turbine-installations. – National Technical University "Kharkiv Polytechnical Institute", Kharkiv, 2015. This thesis deals with the development of object-oriented methodology for complex optimization of the flow path of powerful steam turbines based on joint calculations of the thermal and gasdynamic processes in the elements of the steam turbine's flow path. Due to the constant growth of the consumption of the electricity by society, it is necessary to design new one or modernize the existing steam turbines. To improve the efficiency of steam turbines the methodology of object-oriented complex optimization of the flow path of powerful steam turbines is developed. The mathematical model of the thermal and gasdynamic processes for combined calculating of the nozzle steam distribution, equalizing chamber, and multicylinder turbine flow path is improved. In this work the methods for determining pressure losses in the regulating chamber with respect to operational and design parameters are developed. The dependence of loss factor and the blade outflow angle on the size of the original trimmed edge is obtained. It is also assessed the impact of changes of axial gap downstream stator and the fluid supply circuit to the nozzle segments on the stage efficiency. This model is included to the integrated information space CAD "Turboagregat". Developed methodology is implemented while optimization of the K-310–240 turbine. As result, it power increases by 6,179 MW, and the absolute efficiency of the cycle - by 0,83%.
Молошний, Олександр Миколайович, Александр Николаевич Молошный, and Oleksandr Mykolaiovych Moloshnyi. "Вплив конструкції підвідного пристрою герметичного моноблочного насоса з порожнистим валом на його робочий процес та характеристики." Thesis, Сумський державний університет, 2019. http://essuir.sumdu.edu.ua/handle/123456789/75137.
Full textThe work is focused on the pump construction, which ensures high performance correlated with the safety aspects. It leads to the application of the pump, where the likelihood of the failure of the unit is minimal. The double entry pumps are commonly used due to the reduction of the hydraulic forces and also hermetic units, with closed, seal-less construction. The thesis presents a new solution to the scientific problem, which focuses on the improvement of the design of a sealless double entry close coupled centrifugal pump with a hollow shaft. In this conception, the inside of the hollow shaft is an axial inlet device, which consists of a straight part and diffuser. The design of a sealless close coupled centrifugal pump has been developed. Conducted analyses are based on the results of the investigation of the influence of axial inlet device geometrical features on pump working process in order to achieve minimal energy losses in the flowing part of the pump. The mutual influence of the construction of plain bearings and forces acting on the motion elements of the pump was elaborated. The rotating parts are loaded with the hydrodynamic, magnetic and gravity forces, which are the preliminary design data of bearing. On the other hand, the construction of bearing is severely acting on the mentioned above forces, which leads to the crucial design problem. Conducted numerical simulations made it possible to estimate the flow structure in the flowing part of the pump. In detail, the influence of the axial inlet device with rotating walls and the diffuser before the impeller inlet on the performance of the pump was recognized. The range of optimum values of axial inlet device diameters is also determined in terms of minimum hydraulic losses in the axial inlet device and electric losses in the rotor magnetic circuits of the motor under the condition of a hollow pump shaft with specific speed (ns) in the range from 60 to 70. Moreover, the flow structure at the impeller inlet, the parameters of the distribution of the absolute velocity components and the cavitation processes in the axial inlet device and the impeller were investigated. It is established that the first appearance of the cavitation was observed in the impeller. The reduction of the axial inlet device diameter leads to the change in the locations of the cavitation zones and the direction of their distribution. The methodical recommendations for the design of sealless close-coupled pump with a hollow shaft and the influence of the geometric parameters of the axial inlet device on the structural features of the leading edge of the blades of the impeller were developed. The results obtained by the numerical simulation were experimentally confirmed.
Бідніченко, О. Г. "Сучасні методи геометричного моделювання проточних частин відцентрових компресорів." Thesis, 2012. http://hdl.handle.net/123456789/1270.
Full textНаведено розроблені автором методи геометричного моделювання елементів проточних частин відцентрових компресорів, які базуються на використанні математичних кривих, що дають змогу побудувати сучасні математичні моделі для формування оптимальної форми проточних частин відцентрових компресорів.