Movable scrub-grassland field test wind tunnel device

Abstract

The present invention relates to a movable scrub-grassland field test wind tunnel device. The wind tunnel device is composed of a power section 1, a power section 2, a first test section 3, a second test section 4, a sand feeding device 5, a swing mechanism 6 and a pedestal support frame. Through adoption of a peripheral enclosed-type structure, the movable scrub-grassland field test wind tunnel device solve the problem that a traditional U-shaped structure causes an uniform air-flow flow field, simulate natural wind in various states such as direct flow wind, whirlwind, inclination wind and complex wind with various combination and complete the whole plant salix shrub field blowing test, may perform repeated tests, and provides a lot of real and efficient data for scientific research.

Description

【Technical field】 [0001] The invention belongs to the technical field of forest protection. More specifically, the present invention relates to a wind tunnel device for field testing of movable bushes and grass. 【Background technique】 [0002] Research papers on the ecological harvesting theory of Salix salix and other shrub forests are rarely reported, and the harvesting theory is in the early stage of exploration. The existing shrub harvesting theory uses the whole shrub as the minimum stubble unit for regional clearcutting, which has many disadvantages, such as the decrease of surface vegetation coverage, resulting in excessive water loss and the disappearance of the "fat island effect" , soil desertification intensifies, and shrubs grow slowly and degrade overall after logging. [0003] It is a feasible research route to conduct multidisciplinary and systematic scientific research on the structural parameters and ecological functions of whole shrubs and shrubs. Taking...

AI Technical Summary

Problems solved by technology

There are the following problems in borrowing wind erosion wind tunnels: First, wind erosion wind tunnels are all inverted "U" structures without a bottom plate, which will inevitably affect the uniformity and stability of air flow in the wind tunnel; secondly, wind erosion wind tunnels are all large Medium-sized equipment, with huge structure and high power, is not easy to carry and operate in the field; the third is that the test space is inside the wind tunnel, and the wind tunnel test in the outer area of ​​the wind tunnel cannot be realized

However, the height of the whole plant of large shrubs such as salix is ​​generally about 300cm, which is difficult to place in the wind tunnel, and the test is difficult

Moreover, the wind erosion wind tunnel cannot carry out the ground test and external blowing test

[0007] Second, according to literature review, wind erosion wind tunnels are still poor in terms of mobility and portability

[0008] Third, the existing sandstorm tests in the field of shrubs and grasses all use natural wind, and the data collected are completely dependent on natural wind conditions

By searching the literature, no literature reports closely related to the subject of the present invention have been found so far

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