Research on the Behaviors of Nitrogen Droplets Impacting Surfaces with Different Wettabilities

被引：1
|
作者：
Qiang W. [1 ]
Hou Y. [1 ]
Xue R. [1 ]
Zhang H. [2 ]
Song Y. [2 ]
Liu X. [1 ]
机构：
[1] School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an
[2] Facility Design and Instrumentation Institute, China Aerodynamics Research and Development Center, Mianyang
来源：
Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University | 2021年 / 55卷 / 07期
关键词：
Contact angle; Nitrogen droplets; Oscillation; Rebound; Volume of fluid method;
D O I：
10.7652/xjtuxb202107017
中图分类号：
学科分类号：
摘要：
In order to explore the behaviors of nitrogen droplets impacting surfaces with different wettabilities and reveal the differences of the impact performance between nitrogen droplets and normal-temperature working fluid droplets, this paper adopts the volume of fluid method to study the process of nitrogen droplets impacting the walls with contact angles of 30°, 90°, 120° and 150° at a certain speed, and compares this process with that of water droplets. The results show that on the wall with contact angles of 30° and 90°, both the nitrogen droplets and water droplets exhibit oscillating behavior, but the nitrogen droplets have a larger spreading factor during the spreading stage; the initial retraction speed is uneven in the retraction stage, the overall oscillation frequency is lower and reaches slower to a stable state. On the wall with contact angle of 120°, the water droplets oscillate, but the nitrogen droplets rebound completely; on the wall with contact angle of 150°, it takes longer time for nitrogen droplets to rebound. © 2021, Editorial Office of Journal of Xi'an Jiaotong University. All right reserved.
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页码：151 / 157
页数：6
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