Interaction between Strong Sound Waves and Cloud Droplets: Theoretical Analysis

• DOI: 10.1175/jamc-d-20-0278.1
• Publication Date: 2021-08-25T16:53:40Z
• Authors: Ying-Hui Jia; Fang-Fang Li; Kun Fang; Guang-Qian Wang; Jun Qiu
• Keywords: Collision frequency

Abstract Recently, strong sound wave was proposed to enhance precipitation. The theoretical basis of this proposal has not been effectively studied either experimentally or theoretically. On the microscopic parameters atmospheric cloud physics, paper solved complex nonlinear differential equation show movement characteristics droplets under action waves. motion process an individual droplet in a layer acoustic field is discussed as well relative between two droplets. effects different particle sizes and on collision are analyze dynamic thunder-level waves amplitude velocity variation positive correlation with pressure level (SPL) negative frequency surrounding field. Under low-frequency sufficient intensity, could be forced oscillate significantly. A smaller than 40 μ m can easily driven by 50 Hz 123.4 dB. calculation reveals that disorder for polydisperse intensified, resulting broadening time range spatial range. When less 100 (at dB) SPL greater 117.4 dB Hz), affect This study provides perspective effect microphysics clouds.