Mathematical modeling of selective water intake processes in a two-layer stratified reservoir

  • I.D. Muzaev Geophysical Institute, Vladikavkaz Scientific Center, Russian Academy of Sciences, 93a Markova Str., Vladikavkaz 362002, Russian Federation; Vladikavkaz branch of the Financial University under the Government of the Russian Federation, 7 Molodezhnaya Str., Vladikavkaz 362002, Russian Federation
Keywords: stratified reservoir, selective water intake process, initial boundary value problem, critical positions of the interface of layers

Abstract

Relevance. The use of selective methods of water intake from a stratified reservoir is extremely necessary for the water supply of thermal and nuclear power plants. To avoid overheating of the turbine condensers of these important facilities and thereby avoid creating an emergency situation in them in the summer, it is necessary to supply water to them from the deep layer of the reservoir, where the water is 8-10° colder than in the upper layer. Water from the clarified clean and cold layer of the stratified reservoir of the water supply source should be taken, if the water in the lower layer is heavily polluted. Calculations and design of selective water intake devices have been carried out according to highly simplified empirical formulas up to the present time. There were no scientifically based methods for calculating the selective water intake process. Scientific novelty. In the presented work, for the first time in the world, a selective water intake process is strictly modeled physicsmathematically using theoretical hydrodynamics, mathematical physics and computer methods. Aim. Development of a set of calculation formulas for calculating and controlling selective water intake processes in the design application of water intake devices. Conducting computer computational experiments to determine the input parameters of the intake device, the mark of its depth in the reservoir, as well as the critical value of the water flow rate (velocity) taken away. Methods. An initial boundary value problem of mathematical physics modeling a selective water intake process in a stratified reservoir was been posed and solved. The methods of operational calculus and two-fold trigonometric Fourier series are used. Results. The resulting set of calculation formulas fully contains all the input parameters of the reservoir and the intake device. The use of the research results at the design stage significantly increases the selectivity and profitability of the water intake device.

References

Аверкиев А.Г., Макаров И.И., Синотин В.И. Бесплотинные водозаборные сооружения. М.-Л.: Энергия, 1969. – 164 с.

Белолипецкий В.М., Костюк В.Ю., Шокин Ю.И. Математическое моделирование течений стратифицированной жидкости. Новосибирск: Наука, 1991. – 176 с.

Букреев В.И. Способ управления селективным водозабором через отверстие в вертикальной стенке. // Прикладная механика и техническая физика. – 2010. – Т. 51. No 3. – С. 49–54.

Гинзбург И.П. Теория сопротивления и теплопередачи. Л.: Изд. Ленинградского университета, 1970. – 378 с.

Заалишвили В.Б., Музаев И.Д. Один эффективный метод решения начально-краевых задач поперечных колебаний балки с учетом ее внутреннего сопротивления. // Геология и геофизика Юга России. – 2023. – Т. 12. No 2. – С. 55–66. DOI: 10.46698/VNC.2023.63.12.005.

Корн Г., Корн Т. Справочник по математике для научных работников и инженеров. М.: Наука, 1977. – 818 с.

Кошляков Н.С., Глинер Э.Б., Смирнов М.М. Уравнения в частных производных математической физики. М.: Высшая школа, 1970. – 710 с.

Ламб Г. Гидродинамика. М.-Л.: Гос. изд-во технико-теоретической литературы, 1947. – 929 с.

Ландау Л.Д., Лифшиц Е.М. Гидродинамика. М.: Наука, 1977. – 735 с.

Методические указания по технологическим расчетам водоемов-охладителей. / Исполнители А.С. Соколов, И.И. Макаров, В.И. Кравец, З.Р. Филиппова. СПб.: ВНИИГ, 2003. – 116 с.

Музаев И.Д., Туаева Ж.Д. Математическое моделирование проблем охраны окружающей среды. М.: Научный мир, 2003. – 96 с.

Музаев И.Д., Харебов К.С., Музаев Н.И. Теоретические положения автоматизации проектирования селективных водозаборных устройств. // Вычислительные технологии. – 2016. – Т. 21. No 4. – С. 99–110.

Справочник по гидравлике. / Под ред. В.А. Большакова. Киев: Вища Школа, 1977. – С. 223–225.

Сретенский Л.Н. Теория волновых движений жидкости. М.: Наука, 1977. – 815 с.

Тихонов А.Н., Самарский А.А. Уравнения математической физики. М.: Наука, 1977. – 735 с.

Шокин Ю.И., Рычков А.Д., Хакимзянов Г.С., Чубаров Л.Б. О численных методах решения задач о накате волн на берег. // Вычислительные технологии. – 2015. – Т. 20. No 5. – С. 214–232.

Craya A. Recherches theorignes sur l’ecoulement de couches superposees de fluides de densites defferents. // La Houil le Blanche. – 1949. – Vol. 4. – pp. 44–55.

Gyoo-Bum Kim, Wan-Soo Kim, Jung-Hoon Park, Yeong-Cheol Son, Jin-Woo Kim. Justification of operating capacity of selective intake structure (flexible type) in winter conditions. // The journal of Engineering Geology. – 2013. – Vol. 23. Issue 3.– pp. 227–234.

Harleman D.R.F., Stozenbach K.D. Fluid mechanics of heat disposal from power generation. // Annual Review of Fluid Mechanics. – 1972. – Vol. 4. – pp. 7–32.

Lyubimova T.R., Parshakova Ya.N., Lepikhin A.P., Luakhin Yu.S. Increasing the stability of cooling reservoirs by using selective water intake schemes. // Water and Ecology. – 2020. – Vol. 25. Issue 2. – pp. 45–58. DOI: 1023968/2305-34882020.25.2.45-58.

Published
2024-09-30