Preliminary study of the electrospray DPE peculiarities from the liquid surface in the presence of the CSWs

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Accounts of Chemical Research Pub Date : 2023-12-13 DOI:10.1088/2058-6272/ad1570

Weiguo He, Weijie Huo, Luofeng Han, Kangwu Zhu, Feng Wang, Zekun Wang

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Abstract

The Ultrasonic Electric Propulsion (UEP) system is a cutting-edge propulsion technology that is mostly used on platforms for small satellites (less than 10 kg). The characteristics of droplet partial emissions (DPEs) in the UEP system are investigated using a high-speed imaging technique (an ultra-high speed camera (NAC HX-6) and a long-distance microscope) in this work. The experiments demonstrate that there are a few partial emission modes, including left-side emission, double-side emission, and right-side emission, that are present in the droplet emission process of the UEP system. These modes are primarily caused by the partial formation of capillary standing waves (CSWs) on the emission surface of the ultrasonic nozzle. The emission rate for single- and double-sided emissions varies at different times, indicating that there are different CSWs engaged in droplet emission due to variations in the liquid film thickness and charge state of the liquid cones. Additionally, as the droplets emit continuously, a raised area on the emission surface appears, with several droplets emitting there as a result of charge accumulation. Additionally, photos of the CSWs with emitting droplets are obtained, which highlights the CSWs’ distinctive wave morphology.

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对 CSW 存在时液体表面电喷雾 DPE 特性的初步研究

超声波电力推进（UEP）系统是一种尖端推进技术，主要用于小型卫星（10 千克以下）平台。本研究利用高速成像技术（超高速相机（NAC HX-6）和长距离显微镜）研究了 UEP 系统中液滴部分发射（DPE）的特征。实验证明，在 UEP 系统的液滴发射过程中存在一些局部发射模式，包括左侧发射、双侧发射和右侧发射。这些模式主要是由超声波喷嘴发射面上部分形成的毛细驻波（CSW）引起的。单面发射和双面发射的发射率在不同时间有所不同，这表明由于液膜厚度和液锥电荷状态的变化，参与液滴发射的 CSW 不同。此外，随着液滴的不断发射，发射面上会出现一个凸起的区域，由于电荷积累，该区域会有多个液滴发射。此外，还获得了带有发射液滴的 CSW 的照片，这些照片突出显示了 CSW 独特的波形。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.