Building wind pressure equivalent numerical simulation method and simulation device

The invention provides a building wind pressure simulation equivalent numerical method and a simulation device, and the method comprises the steps: designing an orthogonal test, obtaining wind field characteristic test data under the influence of different factors through a wind tunnel test, building a database, fitting the resistance coefficients of green plants under different factors according to the database, and giving an equivalent calculation method of a post-tree wind field. A geometric model of a green plant and a building structure is established in grid division software, grids are divided, a computational domain is discretized and then imported into fluid simulation software for iterative calculation, a momentum equation is corrected by introducing a pressure loss item, and flow parameters of airflow flowing through a porous medium are obtained. According to the method, the wind tunnel test database and the numerical simulation parameters are associated, the building facade wind load under the inf