An in-situ testing method suitable for airflow resistance characteristics of plants

Abstract

This invention relates to the field of in-situ testing of plant airflow resistance characteristics, and provides a suitable in-situ testing method for plant airflow resistance characteristics. It employs a portable, quick-assembly in-situ DC wind tunnel in conjunction with a handheld anemometer and anemometer. The DC wind tunnel consists of a portable bed-type lifting frame and a wind tunnel device mounted on it, allowing for free adjustment of the test support platform's ground clearance, thus enabling flexible adjustment of the wind tunnel body, i.e., the height of the test port. Using this DC wind tunnel structure, the wind field at any wind speed can be reproduced by adjusting the variable frequency fan in the power section. Combined with the handheld anemometer and anemometer, the wind speed and pressure values ​​before and after the plant are measured. The average value of each measuring point before and after is taken as the final measured wind speed and pressure value. Based on the measured pressure drop and wind speed, the drag coefficient at different heights of the plant is calculated, thereby enabling in-situ testing of the plant's aerodynamic resistance characteristics at different heights and wind speeds.

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