Method for monitoring local area wind field based multiple wind measurement devices

Abstract

A method for constructing a wind field model based on CFD and monitoring a local area wind field of multiple wind measurement devices comprises the steps of 1) constructing a business guarantee area geographic information model: according to business guarantee area requirements, properly extending to determine business guarantee area boundary conditions, utilizing precise terrain information obtained by GIS, combining with business guarantee area landform characteristics, and constructing a business guarantee area geographic information model containing elevation, roughness and other information; 2) constructing a computational fluid dynamics (CFD) wind field simulation model: solving a discrete solution of a fluid dynamics control equation through a numerical method, and performing CFD numerical simulation according to a geographic model of a service guarantee area to obtain CFD wind field simulation results with different directions, different wind speeds and different gust characteristics, wherein the selection of the size of the grid of the service guarantee area needs to be determined in combination with the landform condition so as to achieve the minimum calculation amount and the optimal simulation result; 3) analyzing sensitivity of observation points; and 4) establishing a regional wind field monitoring system.

Description

technical field [0001] The present invention relates to the monitoring method of atmospheric wind field, especially a method for querying and matching the wind field calculated by combining the actual measured wind field and the fluid mode, so as to realize the monitoring of the atmospheric wind field within a local range (within a radius of about 20km and a height of 5km), which is an important method for aviation Flight, military activities, etc. provide local real-time monitoring data. Background technique [0002] Wind is the product of heat and power in the atmosphere. When air flows under the action of atmospheric pressure gradient, wind is formed. It is caused by the difference in atmospheric temperature, density and pressure caused by the uneven heating of the earth's surface by the sun. It is also affected by the rotation of the earth, surface roughness, and terrain changes. Wind field information plays an important role in analyzing the distribution of pressure fi...

AI Technical Summary

Problems solved by technology

Due to the cumbersome operation and high cost, usually each weather station implements 1 to 2 detections per day

The second is the ground-based remote sensing detection method. At present, some stations have been installed with weather radar, wind profiler, laser wind radar, sound radar and other equipment, which can realize single-point continuous observation of high-altitude wind field, time resolution and vertical resolution. The rate is high, but the spatial detection range is limited, and the main measurement is the horizontal wind field in the vertical direction.

[0007] Since the existing wind field observation equipment is only deployed at a single point, the deployment location and the location where the wind measurement data is required are usually not consistent in time and space, and different wind measurement equipment has its own applicable conditions, so the existing wind field measurement methods cannot meet the requirements. need

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