Refined simulation method and system for wind speed field of mountain terrain

Abstract

The invention discloses a refined simulation method and system for a wind speed field of mountainous terrain. The method comprises the steps that a mountain is simplified into a semi-ellipsoid structure capable of being described in a parameterized mode, and a three-dimensional calculation model is established; establishing a cuboid computational domain according to the size of the three-dimensional calculation model of the mountain; applying a wind speed conforming to an exponential distribution rule to an inlet plane of the cuboid computational domain through a turbulence model; and observing the spatial distribution condition of the wind speed field in the cuboid computational domain, extracting wind direction angles and wind speeds at different coordinates, searching the relation between the wind speed field and the mountain terrain parameters, and performing fitting by using a mathematical formula. The method can be used for analyzing the influence of mountain topography on the wind speed compared with plain topography, and by utilizing the advantage that the wind speed distinction degree of the near-ground position of the mountain is higher, the negative influence of pressure and vortex force generated by local wind speed on capital construction projects built in the mountainous area can be researched; non-linear function fitting related to wind speed field data also provides a reference for mathematical quantization of complex terrain wind field numerical simulation.

Description

technical field [0001] The invention belongs to the field of wind speed field simulation, and in particular relates to a refined simulation method for a wind speed field of mountainous terrain. Background technique [0002] In the field of economic development, the most basic thing is the utilization of energy, so infrastructure projects related to energy transmission and information transportation are particularly important. When these infrastructure projects are put into operation, they will more or less pass through some complex non-flat landforms, such as mountainous areas, and some parts may be subjected to large wind loads, which is not conducive to the operating life of the infrastructure projects. However, most of the wind area maps given by the current meteorological bureau are relatively rough, and the wind speed in a certain area is considered from a macro perspective. Therefore, it is necessary to simulate the wind speed field of the mountainous terrain more pre...

AI Technical Summary

Problems solved by technology

Another method is to use simulation software to simulate, which is more convenient to implement. The mountain model and computational domain can be realized by two-dimensional model. The specific size of the wind speed in each direction in the coordinate system, the degree of refinement is low, and the difference with the actual wind field is large

Images