Sand wind two-phase flow experiment device for buildings and building wind sand experiments

Abstract

The invention provides a sand wind two-phase flow experiment device for buildings and building wind sand experiments. The sand wind two-phase flow experiment device comprises a direct-flow type atmospheric boundary layer wind tunnel (1), a sand grain recovery tank (8), a wind sand flow funnel tank (9) and a wind sand flow sand-supply bed surface (16). The direct-flow type atmospheric boundary layer wind tunnel (1) is composed of a fan section (2), a stabilizing section (3), a honeycomb and damping net (4), a contraction section (5), an experimental section (6) and a diffusion section (7). The sand grain recovery tank (8) is installed on the outlet ground adjacent to the direct-flow type atmospheric boundary layer wind tunnel (1). The wind sand flow funnel tank (9) is installed at the wind tunnel outer top of the front end of the experimental section (6). The wind sand flow sand-supply bed surface (16) is formed by splicing a plurality of sand supply grooves with the same size into one, and installed in the experimental section (6). The wind sand flow funnel tank (9) and the wind sand flow sand-supply bed surface (16) are adjusted, and therefore the two-phase flow boundary condition of wind sand obtained by blowing falling sand and bed surface sand through wind can be suitable for the buildings and the building wind sand experiments.

Description

technical field [0001] The invention relates to a wind-sand two-phase flow experimental device, in particular to a wind-sand two-phase flow experimental device used for wind-sand experiments on buildings and structures. Background technique [0002] In the 1940s, Bagno, Chepil and others began to use wind tunnels to conduct experimental research on sand movement and soil wind erosion. Znamenski specially designed and built a sand wind tunnel to carry out experimental research on the process of sand wind erosion and the prevention of sand piles. In 1967, the Sandwind Tunnel of the Institute of Geography, Chinese Academy of Sciences was completed and put into use in Lanzhou. From 1988 to 1990, the former Lanzhou Desert Research Institute of the Chinese Academy of Sciences designed and built a medium-sized soil wind erosion tunnel at the Shapotou Experimental Station. According to the data at home and abroad, the current experimental research on wind and sand simulation in wi...

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Problems solved by technology

The wind-sand two-phase flow experimental devices involved in the above-mentioned patents are not suitable for wind-sand experiments on buildings and structures, and the experimental similarity criterion of the wind-sand two-phase flow simulated by the experiment is not considered.

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