Measurement of morphological changes of pear leaves in airflow based on high-speed photography.

ABSTRACT: The morphological changes of leaves under the airflow have a significant effect on the deposition of pesticide droplets on the leaves, but the wind-induced vibration of the leaves is complicated to measure. In this study, an aerodynamic test of the pear leaf was conducted in the wind tunnel, and binocular high-speed photography was used to record the deformation and vibration of the leaves under various airflow velocities. Experiments showed that air velocity (v) had a significant effect on the morphological response of the leaf. As v increased, the leaf was in three states, including static deformation, low-frequency vibration, and reconfiguration of airfoil steady state. The mutation from one state to another occurred at the critical velocity of v_cr1 and <

SUBMITTER: Zhang C 

PROVIDER: S-EPMC9685665 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature