Numerical model of the hydrowave laboratory for studying the interaction of sea waves with hydrotechnical structures

Abstract

Рассмотрены вопросы, связанные с построением и областью применения численной модели гидроволновой лаборатории как инструмента, позволяющего в некоторых ситуациях отказаться от физического моделирования и заменить его численным, удешевить и ускорить ряд этапов проектных работ в гидротехническом строительстве. Представлены математические модели и численные алгоритмы, которые могут войти в состав численной лаборатории и использоваться для численного моделирования процессов генерации поверхностных волн, их распространения и взаимодействия с прибрежными и морскими сооружениями. Перечислены требования к программному обеспечению численной модели гидроволновой лаборатории, выполнение которых позволит эффективнее использовать этот инструмент инженерами-гидротехниками при проектировании гидротехнических сооружений. In the design of hydraulic structures and facilities of the coastal infrastructure, one of the main methods of confirming the claimed characteristics of the constructed facilities is the implementation of physical modelling in special hydrowave laboratories. However, the use of physical modelling as a tool for determining the most rational characteristics and parameters of hydraulic structures is very limited due to the high cost and, as a rule, the high complexity of the relevant studies. For this reason, it is virtually impossible to resort to this type of study in situations where a significant number of different project options need to be sorted out. The way out of the situation is the use of numerical modelling methods that allow you to choose the most suitable option. In fact, there is a need for a numerical model of the hydrowave laboratory, which allows abandoning the physical modelling in appropriate situations and replacing it with a numerical one. In this case, it will be possible to achieve important advantages: to reduce the cost and speed up the process of choosing the rational parameters of the design solution in hydraulic engineering, to give sufficient justification for the decision before its final verification by physical modelling. Thus, the combination of numerical studies of the proposed design solutions and physical modelling of the final result in order to confirm compliance with the requirements meets the needs of design studies in hydraulic engineering. In this paper, we consider the issues related to the construction and the domain of the numerical model of the hydrowave laboratory, as a tool that allows in some situations to abandon the physical modelling and replace it with a numerical one. Mathematical models and numerical algorithms that can be included in the numerical laboratory and used for numerical simulation of the processes of generation of surface waves, their propagation and interaction with coastal and marine structures are presented. The requirements are given for the software of the numerical model of the hydrowave laboratory, the implementation of which will ensure the effective use of this tool by hydraulic engineers in the design of hydraulic structures. Examples of successful use of mathematical technology to improve the efficiency of laboratory research are given.