Environment wind tunnel simulation experiment device and experiment detection method thereof

Abstract

The invention provides an environment wind tunnel simulation experiment device and an experiment detection method thereof. The experiment device comprises a wind tunnel and a mobile measurement framearranged in the wind tunnel. The wind tunnel comprises a collector, a power section, a large-angle diffusion section, a stabilization section, a contraction section, a test section, a diffusion section and an exit diffusion section. The length, width and height of the test section are 28m*5m*3.5 m; the overall length of the whole wind tunnel body is 71.1m; and the wind tunnel is a straight-flow blowing type wind tunnel. The environment wind tunnel in the scheme can finish simulation study of migration and diffusion of pollutants in the atmosphere: wind tunnel simulation of a large scale model,complex terrain influence, simulation study of mesoscale leeward slope, study of influence of rainfall and snowfall on diffusion of pollutants, aerosol deposition and resuspension characteristic research and study of city region pollutant migration and diffusion rules and the like. The experiment device can finish study of transmission and diffusion of pollutants in the atmospheric boundary layerand wet and dry deposition of aerosol.

Description

technical field [0001] The invention relates to the technical field of air pollutant migration and diffusion laws, in particular to an environmental wind tunnel simulation experiment device and an experiment detection method thereof. Background technique [0002] The wind tunnel simulation experiment is a physical simulation method to reproduce the full-scale atmospheric boundary layer flow and diffusion phenomenon in the wind tunnel. The premise must ensure the similarity between the two flow systems of the wind tunnel model and the field prototype. Among them, the size of the test section is the decisive factor of the wind tunnel fluid simulation capability (realization of similarity), which determines the similarity of the simulation experiment. The test section is the part where the model is placed for experiments. The size of the test section consists of height, width and length. The larger the cross-section and the longer the length of the test section, the larger the ...

AI Technical Summary

Problems solved by technology

According to the similarity theory, the scale ratio of the wind tunnel model should not be higher than 1:5000. The cross-section of the existing domestic wind tunnel test section is 1.5m×1m. After considering the side wall effect, the maximum radius of the area that can be simulated is 2.5km, which cannot be very large. Satisfies the requirements of regional impact research on model scaling and simulation area at the same time

Images