caa a22 4500 606198970 CHVBK 20210128100936.0 cr unu---uuuuu 210128e20150201xx s 000 0 eng 10.1007/s00348-015-1901-2 doi (NATIONALLICENCE)springer-10.1007/s00348-015-1901-2 The influence of channel intersection angle on droplets coalescence process [Elektronische Daten] [Zhaomiao Liu, Rentuo Cao, Yan Pang, Feng Shen] The present study investigates the influence of channel intersection angle on the droplets coalescence process using high-speed microscope and micro-PIV system. "Spontaneous coalescence” and "delayed coalescence” occur when the droplets meet at low flow rate conditions. The film drainage time and critical capillary number are organized by recording the phenomena after droplets meet at channel junctions with different intersection angles. The microchannel junction structure details are taken for the in-depth understanding of droplets coalescence process. The experimental results show that the critical capillary number for droplets coalescence decreases with the increase of channel intersection angle, and increasing two-phase flow rates and intersection angle can reduce the film drainage time. It can be concluded that reducing the intersection angle may improve the coalescence efficiency. Springer-Verlag Berlin Heidelberg, 2015 Liu Zhaomiao College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, 100124, Beijing, China aut Cao Rentuo College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, 100124, Beijing, China aut Pang Yan College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, 100124, Beijing, China aut Shen Feng College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, 100124, Beijing, China aut Experiments in Fluids Springer Berlin Heidelberg 56/2(2015-02-01), 1-4 0723-4864 56:2<1 2015 56 348 https://doi.org/10.1007/s00348-015-1901-2 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 review-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00348-015-1901-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Liu Zhaomiao College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, 100124, Beijing, China aut NATIONALLICENCE 700 1- Cao Rentuo College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, 100124, Beijing, China aut NATIONALLICENCE 700 1- Pang Yan College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, 100124, Beijing, China aut NATIONALLICENCE 700 1- Shen Feng College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, 100124, Beijing, China aut NATIONALLICENCE 773 0- Experiments in Fluids Springer Berlin Heidelberg 56/2(2015-02-01), 1-4 0723-4864 56:2<1 2015 56 348