Natural wind-sand scouring environment modeling technology

Abstract

The invention is applicable to the field of environment tests, and provides a natural wind-sand scouring environment modeling technology comprising the steps of acquiring climate state wind directionand wind speed information; acquiring a dust mixing ratio simulation data based on an area climate-dust coupling model RegCM4-Dust; computing a dust concentration; computing a wind-sand scouring flux;and computing an included angle between the wind direction and a research object, namely a wind-sand scouring angle. The natural wind-sand scouring environment is built by the wind-sand scouring fluxand the wind-sand scouring angle. According to the natural wind-sand scouring environment modeling technology provided by the invention, a numerical simulation method is used for acquiring dust concentration data, so that the arrangement of observation instruments is avoided, a lot of costs such as equipment, maintenance and labor costs are saved, and the observation time is saved; through comparing with a laboratory dust test, the technology provided by the invention can be used for assessing and evaluating the adaptation and durability of material to the natural wind-sand scouring environment, can provide a simulation environment support for the design, application and protection of the wind-sand scouring resistant material, and fills in the blank of the natural wind-sand scouring environment modeling simulation technology.

Description

technical field [0001] The invention belongs to the field of environmental tests, and relates to a modeling technique for natural sand erosion environment. Background technique [0002] Northwest China is an area with a high incidence of sand and dust activities. The high wind and sand environment not only poses an important threat to air quality, but also has a very serious corrosion and wear failure behavior on materials, resulting in a decrease in durability and safety, as well as material loss and equipment damage. It affects the service life of various metals, machinery, vehicles, etc., and causes huge losses to the national economy. Dust in desert areas includes sand, floating soil, etc. Among them, the sand particles are relatively large, and driven by high wind speed, they can impact and damage various materials exposed to the outside. Floating soil is finer and stickier than sandy soil, and its main components are high-hardness quartz and plagioclase, as well as ca...

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Problems solved by technology

[0004] In order to solve the above-mentioned existing problems, the object of the present invention is to provide a natural wind-sand erosion environment modeling technology by using the combination technology of observation data and numerical simulation, aiming at solving the problem of natural wind-sand erosion environment modeling

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