نوع مقاله : مقاله پژوهشی
نویسندگان
1 دانشگاه رازی
2 دانشگاه رازی-گروه مهندسی آب
3 رازی کرمانشاه
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
One of the main characteristics of the shallow water model is that the vertical dimension of the flow is small compared to its horizontal dimension, on this basis the flow is considered almost horizontal, and also the pressure distribution in the depth can be hydrostatically commented These assumptions simplify the equations and solve them numerically. In finite volume methods, any field with complex boundary conditions can be easily analyzed by using an irregular triangular grid. While in finite difference methods, it is very difficult to achieve high accuracy methods and has a high computational cost, and the application of finite difference schemes in fields with complex boundary conditions, which often happens in practice, It is very difficult and practically impossible. In this research, after developing the two-dimensional numerical model of the flow using the finite volume method in the Fortran programming language, taking into account the time halving scheme and using triangular grids, the flow pattern in open channels was investigated. Also, several zero-equation turbulence models including parabolic model, Parantel mixing length and Smagorinsky model were compared. The results of comparisons with laboratory data show the high accuracy of the numerical model in the simulations.
کلیدواژهها [English]