Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-18-7251-2018 |
Bridging the condensation-collision size gap: a direct numerical simulation of continuous droplet growth in turbulent clouds | |
Chen, Sisi1; Yau, Man-Kong1; Bartello, Peter1; Xue, Lulin2 | |
2018-05-25 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2018 |
卷号 | 18期号:10页码:7251-7262 |
文章类型 | Article |
语种 | 英语 |
国家 | Canada; USA |
英文摘要 | In most previous direct numerical simulation (DNS) studies on droplet growth in turbulence, condensational growth and collisional growth were treated separately. Studies in recent decades have postulated that small-scale turbulence may accelerate droplet collisions when droplets are still small when condensational growth is effective. This implies that both processes should be considered simultaneously to unveil the full history of droplet growth and rain formation. This paper introduces the first direct numerical simulation approach to explicitly study the continuous droplet growth by condensation and collisions inside an adiabatic ascending cloud parcel. Results from the condensation-only, collision-only, and condensation-collision experiments are compared to examine the contribution to the broadening of droplet size distribution (DSD) by the individual process and by the combined processes. Simulations of different turbulent intensities are conducted to investigate the impact of turbulence on each process and on the condensation-induced collisions. The results show that the condensational process promotes the collisions in a turbulent environment and reduces the collisions when in still air, indicating a positive impact of condensation on turbulent collisions. This work suggests the necessity of including both processes simultaneously when studying droplet-turbulence interaction to quantify the turbulence effect on the evolution of cloud droplet spectrum and rain formation. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000433159600003 |
WOS关键词 | HOMOGENEOUS ISOTROPIC TURBULENCE ; MICROSCOPIC APPROACH ; CUMULUS CLOUDS ; PART I ; ENTRAINMENT ; DISTRIBUTIONS ; ENVIRONMENT ; PARTICLES ; SPECTRA ; GIANT |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/30351 |
专题 | 地球科学 |
作者单位 | 1.McGill Univ, Montreal, PQ, Canada; 2.Natl Ctr Atmospher Res, POB 3000, Boulder, CO 80307 USA |
推荐引用方式 GB/T 7714 | Chen, Sisi,Yau, Man-Kong,Bartello, Peter,et al. Bridging the condensation-collision size gap: a direct numerical simulation of continuous droplet growth in turbulent clouds[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2018,18(10):7251-7262. |
APA | Chen, Sisi,Yau, Man-Kong,Bartello, Peter,&Xue, Lulin.(2018).Bridging the condensation-collision size gap: a direct numerical simulation of continuous droplet growth in turbulent clouds.ATMOSPHERIC CHEMISTRY AND PHYSICS,18(10),7251-7262. |
MLA | Chen, Sisi,et al."Bridging the condensation-collision size gap: a direct numerical simulation of continuous droplet growth in turbulent clouds".ATMOSPHERIC CHEMISTRY AND PHYSICS 18.10(2018):7251-7262. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论