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Academic literature on the topic 'Просторова течія'
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Journal articles on the topic "Просторова течія"
N. M. Fialko, N. M., V. G. Prokopov, Yu V. Sherenkovskyi, N. O. Meranova, S. A. Aleshko, Т. S. Vlasenko, I. G. Sharaevskyi, L. B. Zimin, S. N. Strizheus, and D. P. Khmil. "ОСОБЛИВОСТІ ЗМІНИ ТЕПЛОФІЗИЧНИХ ВЛАСТИВОСТЕЙ НАДКРИТИЧНОЇ ВОДИ ПІД ЧАС ТЕЧІЇ В КРУГЛИХ ТРУБАХ, ЩО ОБІГРІВАЮТЬСЯ." Scientific Bulletin of UNFU 28, no. 3 (April 26, 2018): 117–21. http://dx.doi.org/10.15421/40280324.
Full textГрабова, Тетяна Леонідівна, О. Шматок, and Ніна Сильнягіна. "Розробка інноваційного тепломасообмінного обладнання для фармацевтичних технологій." Scientific Works 83, no. 1 (September 1, 2019): 67–73. http://dx.doi.org/10.15673/swonaft.v83i1.1420.
Full textМоркун, В. С., Н. В. Моркун, В. В. Тронь, О. Ю. Сердюк, І. А. Гапоненко, and А. А. Гапоненко. "Попереднє оброблення пульпи ультразвуком для очищення рудних зерен та дезінтеграції флокулоутворень на основі ефектів кавітації." ВІСНИК СХІДНОУКРАЇНСЬКОГО НАЦІОНАЛЬНОГО УНІВЕРСИТЕТУ імені Володимира Даля, no. 1(271) (February 8, 2022): 24–35. http://dx.doi.org/10.33216/1998-7927-2022-271-1-24-35.
Full textФурман, Анатолій. "МЕТАТЕОРЕТИЧНІ КОНЦЕПТИ ПІЗНАННЯ СВІДОМОСТІ." Psychology of Personality 9, no. 1 (February 20, 2019): 5–11. http://dx.doi.org/10.15330/ps.9.1.5-11.
Full textDissertations / Theses on the topic "Просторова течія"
Бойко, Анатолій Володимирович, Юрій Миколайович Говорущенко, and Валентин Сергійович Бараннік. "Просторова оптимізація лопатки прямої турбінної решітки по декількох перерізах." Thesis, НТУ "ХПІ", 2013. http://repository.kpi.kharkov.ua/handle/KhPI-Press/37140.
Full textІгнатенко, Вікторія Михайлівна, Виктория Михайловна Игнатенко, Viktoriia Mykhailivna Ihnatenko, and О. М. Щербаков. "Моделювання просторових турбулентних течій у пристроях складної форми." Thesis, Видавництво СумДУ, 2007. http://essuir.sumdu.edu.ua/handle/123456789/15372.
Full textБойко, Анатолій Володимирович, Юрій Миколайович Говорущенко, Максим Васильович Бурлака, and Валентин Сергійович Бараннік. "До питання про просторову оптимізацію профілю лопатки прямої турбінної решітки." Thesis, НТУ "ХПІ", 2012. http://repository.kpi.kharkov.ua/handle/KhPI-Press/37128.
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 %.