Calculation method of sun shading by finite element simulation

Abstract

The invention provides a finite-element-simulation solar ray shading computing method. On the basis of the traditional shading algorithm, combined with the characteristics of the finite element algorithm, whether light rays which are emitted by finite element nodes and are same as angles of solar rays and are opposite to the direction of the solar rays are shaded by buildings or not is judged withthe screening excluding method, thus whether all the finite element nodes on the surfaces of a finite element model are irradiated by the sun or not is computed, it is achieved that judgment is carried out with the vector basic characteristic judgment method, the coordinate value correlation method and the area method in sequence, and whether all the surfaces of the finite element model are shading faces or not is screened. According to the finite-element-simulation solar ray shading computing method, finite element grids are fully combined, particularly, characteristics of high-arch-dam temperature control and crack prevention model grids are fully combined, the influence of solar radiation can be rapidly solved, the algorithm is easily achieved, computing is efficient, and the practicability is high; the finite-element-simulation solar ray shading computing method is applied to correlation computation of practical engineering, simulation computation is accurate, and the finite-element-simulation solar ray shading computing method can provide a scientific and reasonable data supporting basis for engineering application.

Description

technical field [0001] The invention relates to a finite element simulation method for calculating solar ray shading, which belongs to the technical field of water conservancy and hydropower engineering. Background technique [0002] Solar radiation is the most important source of energy for the Earth's atmospheric system, and directly affects regional climate change patterns and atmospheric conditions. Research results on solar radiation are very rich. Solar radiation not only affects regional climate conditions, but due to factors such as the mutual shading effect of mountains and buildings, seasonal changes in solar azimuth, and other factors, the amount of solar radiation received by various parts of the building varies greatly, which may cause relatively large differences. Unfavorable temperature stress, temperature stress is an important factor for the overall structure and performance of concrete, so it is of great significance to study the influence of solar radiatio...

AI Technical Summary

Problems solved by technology

Considering that the computer used in the temperature control and anti-crack calculation is usually a single machine with 8-12 cores, if the calculation resources for solar radiation are too large, it will seriously affect the calculation efficiency of the temperature field and stress field

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