Droplet dynamics under an impinging air jet
Droplet dynamics under an impinging air jet
复制标题
撞击空气射流下的液滴动力学
DOI:
10.1017/jfm.2022.450
复制
发表时间:
2022
影响因子:
3.7
通讯作者:
Lee, Sungyon
中科院分区:
文献类型:
--
作者:
Chen, Zih-Yin;Hooshanginejad, Alireza;Kumar, Satish;Lee, Sungyon
Partially wetting droplets under an airflow can exhibit complex behaviours that arise from the coupling of surface tension, inertia of the external flow and contact-line dynamics. Recent experiments by Hooshanginejad et al. (J. Fluid Mech., vol. 901, 2020) revealed that a millimetric partially wetting water droplet under an impinging jet can oscillate in place, split or depin away from the jet, depending on the magnitude (i.e. ) and position of the jet. To rationalise the experimental observations, we develop a two-dimensional lubrication model of the droplet that incorporates the external pressure of the impinging high-Reynolds-number jet, in addition to the capillary and hydrostatic pressures of the droplet. Distinct from the previous model by Hooshanginejad et al. (J. Fluid Mech., vol. 901, 2020), we simulate the motion of the contact line using precursor film and disjoining pressure, which allows us to capture a wider range of droplet behaviours, including the droplet dislodging to one side. Our simulations exhibit a comparable time-scale of droplet deformations and similar outcomes as the experimental observations. We also obtain the analytical steady-state solutions of the droplet shapes and construct the minimum criteria for splitting and depinning.
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影响因子:
2.4
作者:
F. Lemoine;M. Wolff;M. Lebouché
通讯作者:
F. Lemoine;M. Wolff;M. Lebouché
影响因子:
3.7
作者:
Richard D. Lenz;Satish Kumar
通讯作者:
Satish Kumar
影响因子:
2.7
作者:
Truong Pham;Satish Kumar
通讯作者:
Satish Kumar
DOI:
--
发表时间:
1983
期刊:
影响因子:
--
作者:
E. Tuck
通讯作者:
E. Tuck
影响因子:
4.6
作者:
J. Moriarty;L. Schwartz;E. Tuck
通讯作者:
J. Moriarty;L. Schwartz;E. Tuck