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主页 旧刊 有关人员 未来大会 American Society of Thermal and Fluids Engineering

ISSN 在线: 2379-1748

ISBN 打印: 978-1-56700-517-2 (Flash drive)

5-6th Thermal and Fluids Engineering Conference (TFEC)
May, 26–28, 2021 , Virtual

ROLE OF LIQUID POOL PROPERTIES IN COALESCENCE OF IMPACTING WATER DROPLET

Get access pages 723-731
DOI: 10.1615/TFEC2021.fip.032381

摘要

The investigation of droplet impact phenomenon on a liquid pool has been a wide area of research since many years due to its link with many potential industrial applications such as spray quenching, painting, oil spills etc. So far, the droplet dynamics under various conditions of liquid pool as the stated process mimics the extinguishment of fire on a liquid pool by spray quenching has not been revealed yet. Hence, in the current work, by varying the liquid pool properties, the variations of crown formation and splashing, crater formation, maximum jet height and secondary droplet formation are monitored. The variation of the above-mentioned parameters is performed in terms of Oh and We numbers. The crown splashing is achieved in case of OhPool = 2.6 × 10-4 due to the lowest viscosity. The crater depth is directly a function of impact velocity. With increasing Wedrop the crater depth enhances due to the high kinetic energy of the impacting droplet which creates a large disturbance in the pool. The maximum jet height of 15.89 mm is achieved at OhPool = 3.3 × 10-4 and Wedrop = 204. Due to the Rayleigh-Plateau instability, the secondary droplet formation is observed after reaching a critical jet height and it is found to be a function of OhPool. Furthermore, the variation of the all aforesaid parameters on hot pool was also analyzed.
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