Air-exhaust-type wind-sand flow gradient high sand-collecting rate device for wind-sand environment wind tunnel

Abstract

The invention relates to an air-exhaust-type wind-sand flow gradient high sand-collecting rate device for a wind-sand environment wind tunnel. The air-exhaust-type wind-sand flow gradient high sand-collecting rate device is characterized in that a sand dust gradient collector is provided with wind-sand flow sand inlets, gradient channels communicate with the wind-sand flow sand inlets, collector placing openings are connected with the gradient channels, air-exhaust connecting pipes are mounted on gradient leaking nozzles exposed out of the collector placing openings correspondingly, the gradient leaking nozzles are perpendicular to the bed surface downwards and are connected with the air-exhaust connecting pipes, the air-exhaust connecting pipes are connected with wind-sand flow air-exhaust branch pipes, wind-sand flow separating tanks of the respective channels sleeve outlets of the wind-sand flow air-exhaust branch pipes, the wind-sand flow separating tanks communicate with weighingbottles, high-precision weighing sensors are placed at the bottoms of the weighing bottles, and the sand delivery amounts in the weighing bottles are measured by the high-precision weighing sensors. According to the air-exhaust-type wind-sand flow gradient high sand-collecting rate device, the measured sand delivery amounts are precise and errorless, and data support is provided for disclosing thechange law that a wind-sand flow passes through a flow field and for researching the relation between the wind speed and a soil structure as well as the relation between the soil water content and soil wind erosion.

Description

technical field [0001] The invention belongs to a measuring device, in particular to a wind-sand environment wind tunnel pumping type wind-sand flow gradient high sand collection rate device. Background technique [0002] The wind tunnel test in the wind and sand environment is a large-scale instrument designed for simulating the field wind and sand phenomenon. In the simulation experiment of the wind and sand phenomenon, the wind speed is continuously changed in the range of 2 m / s to 40 m / s, and the wind speed is controlled by the manual transmission. In scientific experiment activities, the relationship between wind speed and sand flow and the measurement of sand flux are an important physical quantity for studying the take-off mechanism of wind and sand, and for the research and engineering calculation of wind and sand flow. The wind tunnel experiment provides a scientific basis for the observation, evaluation and application of the sand control system and the wind and...

AI Technical Summary

Problems solved by technology

The wind tunnel experiment provides a scientific basis for the observation, evaluation and application of the sand control system and the wind and sand fixation measures based on the principles of wind and sand physics. When the speed reaches a certain wind speed, it will take a period of time. However, when the wind speed reaches a stable value, the sand bed surface in the wind tunnel in the wind and sand environment has changed, and the sand accumulation instrument in the sand wind tunnel test section has entered a leap. sand particles, resulting in errors in the amount of sand transported at a certain wind speed

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