Wind tunnel simulation device for research of plant dust retention mechanism and operation method

Abstract

The invention discloses a wind tunnel simulation device for research of a plant dust retention mechanism and an operation method. The device comprises a wind environment control system, a powder adding system and a plant dust retention exposure system; the wind environment control system comprise a fan for generating simulated wind speed; the powder adding system comprises a powder adding elementlocated on the leeward side of the fan and used for adding particles and simulating particle pollution; the plant dust retention exposure system is located on the leeward side of the powder adding element and used for fixing a plant sample. The device further comprises a particle measurement system. Different wind speed scale environments and air particle pollution concentration conditions of plants can be simulated by the corresponding control systems, and to-be-analyzed plant dust retention capacity is analyzed quantitatively; the degree of influence of plants with different crown structuresand leaf surface structures on the mitigation effect on the particles is analyzed quantitatively, the efficient dust retention plants more suitable for different wind speeds and particle environmentsare found, and great significance in control of urban air particle pollution and selection of tree species is realized.

Description

technical field [0001] The invention belongs to the field of urban green space plants controlling atmospheric particles under the interference of environmental wind, and in particular relates to a wind tunnel simulation device and an operation method for studying the dust retention mechanism of plants. Background technique [0002] With the development of economies around the world, the demand for energy, industry, and transportation has increased rapidly, and the problem of atmospheric particulate matter pollution has become increasingly prominent, seriously threatening human health. At present, the control and reduction of particulate matter has become a hot spot and frontier in the field of air pollution research in the world. The reduction effect of plants on particulate matter is one of the more effective methods among many air treatment methods, and the reduction effect of plants on particulate matter has been confirmed by many studies (Peachey and Sinnett et al., 2009...

AI Technical Summary

Problems solved by technology

Due to the large changes in the above factors, the research on the mechanism of plant-to-particles is limited by the control experiment technology and conditions, so that the previous studies on the benefits of plant-to-particle reduction are still insufficient

In particular, the process of plant retention under wind disturbance conditions is relatively poorly studied

[0003] After searching the existing technology, it is found that some patents have been published on the research device for the ability of plants to adsorb particulate matter, such as CN103278433A, CN104502544A, etc. These devices are mostly suitable for plant adsorption particle experiments in static environments, and cannot complete control experiments under wind interference conditions. And the small size is not conducive to the simultaneous control of multiple samples

The wind tunnel equipment mostly appears in the research of fluid mechanics, such as CN104280204A, CN104280204B, etc., which are mainly used in aerospace, automobile and other aerodynamic experiments. Research on the Mechanism of Particulate Matter

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