| 柏文文,魏加华,李琼,时洋,倪三川,雷发楷.声波作用下液滴碰并沉降及其氢氧同位素特征*[J].,2021,40(1):103-112 |
| 声波作用下液滴碰并沉降及其氢氧同位素特征* |
| The hydrogen and oxygen isotope characteristic of droplet collision and deposition under the action of acoustic wave |
| 投稿时间：2020-04-07 修订日期：2021-01-02 |
| 中文摘要: |
| 液滴沉降过程中会与环境水汽发生物质交换,造成液滴氢氧同位素发生变化。论文通过小尺度室内实验,研究了低频强声波作用下液滴碰并沉降过程及其与气室环境水汽氢氧同位素交换特征,建立了同位素交换控制方程。研究结果证实液滴沉降过程中存在同位素交换,该过程受声波显著影响。对比液滴自然沉降过程,声波作用使得液滴与环境水汽同位素交换增强,具体表现：声波作用后液滴粒径增大,液滴中分子扩散系数增大,沉降后汇集水中重同位素出现富集。此外,声波影响下的氢氧同位素交换强度与液滴初始粒径呈正相关,其对大液滴群影响的显著性水平可达0.05。 |
| 英文摘要: |
| There is material exchange between droplet and environmental water vapor in the process of droplet deposition, resulting in the change of hydrogen and oxygen isotopes. In this paper, it studied droplet characteristics of hydrogen and oxygen isotopes and isotopes exchange with environmental water vapor in the process of droplet colliding and settling under the action of low-frequency strong sound waves, through small-scale laboratory experiments, and the control equations of isotopes exchange is established. The results show that there is isotope exchange in the process of droplet deposition,this process is significantly influenced by sound wave. Compared with the natural deposition process, the acoustic wave enhanced the isotopes exchange between the droplet and the environment water vapor. The specific manifestations are: the droplet size increased, the molecular diffusion coefficient of the droplet increased, and the heavy isotopes in the accumulated water enriched under the action of acoustic wave. In addition, the hydrogen and oxygen isotopes exchange intensity under the influence of sound wave is positively correlated with the initial droplet size, and the significant level of the large droplets group can reach 0.05. |
| DOI：10.11684/j.issn.1000-310X.2021.01.013 |
| 中文关键词: 液滴 声波 氢氧同位素 环境水汽 显著性水平 |
| 英文关键词: droplet sound wave hydrogen and oxygen isotope environmental water vapor significance level |
| 基金项目:国家重点研发计划资助项目(2017YFC0403600)；国家自然科学基金青年(51909130)；青海省自然科学基金青年(2019-ZJ-968Q)；青海大学中青年科研(2018-QGY-8；2018-QGY-9) |
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