kaz29Вестник Казахстанско-Британского технического университетаHerald of the Kazakh-British Technical University1998-66882959-8109Казахстанско-Британский Технический Университетkaz29-213Research ArticleФИЗИКО-МАТЕМАТИЧЕСКИЕ И ТЕХНИЧЕСКИЕ НАУКИPHYSICAL, MATHEMATICAL AND TECHNICAL SCIENCESЧИСЛЕННОЕ МОДЕЛИРОВАНИЕ ТРЕХМЕРНОГО ПРОРЫВА ПЛОТИНЫ МЕТОДОМ VOFNUMERICAL SIMULATION OF 3D DAM BREAK BY VOF METHODИсаховА. А.IssakhovA.

доктор PhD, профессор

ЖандаулетЕ. Ж.ZhandauletYe.

докторант

Казахский Национальный университет им. аль-Фараби; Казахстанско-Британский технический университетКазахстан202010112021173146153Copyright © Исахов А.А., Жандаулет Е.Ж., 20212021Исахов А.А., Жандаулет Е.Ж.Issakhov A., Zhandaulet Y.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://vestnik.kbtu.edu.kz/jour/article/view/213

Плотины – это одна из важных сооружений для сбора и хранения воды, выработки электроэнергии, защити от наводнений и ирригаций. В этой статье представлены численные результаты трехмерного моделирования прорыва плотины. Предложенная численная модель была проверена путем сравнения численных результатов с экспериментальными измерениями и численными результатами других авторов. Численный метод основан на уравнениях Навье-Стокса, описывающих поток несжимаемой вязкой жидкости. Движение поверхности воды захватывается с использованием метода объемной жидкости (VOF), что приводит к строгому сохранению массы. Точность и надежность 3D-модели была испытана с использованием небольшого лабораторного эксперимента по разрушению плотины. Показано, что предложенная модель хорошо предсказывает ударное давление потока прорыва. Также было определено в какой части препятствия возникает максимальное давление после прорыва плотины. При трехмерном моделировании прорыва плотины были рассмотрены разные формы препятствия, с помощью которых можно будет снизить ударное давление. Из представленных численных результатов была определена оптимальная форма препятствия, которую можно использовать в качестве дополнительной страховочной дамбы для основной плотины.

Dams are one of the important installations for collecting and storing water, generating electricity, and protecting against floods and irrigation. This article presents the numerical results of three-dimensional modeling of a dam break. The proposed numerical model was verified by comparing numerical results with experimental measurements and numerical results of other authors. The numerical method is based on the Navier-Stokes equations describing the flow of an incompressible viscous fluid. The movement of the surface of the water is captured using the volume of fluid method (VOF), which leads to strict conservation of mass. The accuracy and reliability of the 3D model was tested using a small laboratory experiment on the destruction of the dam. The proposed model predicts well the impact pressure of the breakthrough flow. It was also determined in which part of the obstacle the maximum pressure occurs after the dam breaks. In threedimensional modeling of a dam break, various forms of obstacles were considered, with the help of which it will be possible to reduce the impact pressure. From the presented numerical results, the optimal form of the obstacle was determined, which can be used as an additional safety dam for the main dam.

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The authors declare that there are no conflicts of interest present.