Investigations of the Atomization Characteristics and Mechanisms of Liquid Jets in Supersonic Crossflow

Zhou, Donglong; Chang, Jianlong; Shan, Huawei

doi:10.3390/aerospace10120995

Open AccessArticle

Investigations of the Atomization Characteristics and Mechanisms of Liquid Jets in Supersonic Crossflow

by

Donglong Zhou

^1,2,

Jianlong Chang

^1,2,*

and

Huawei Shan

³

¹

School of Mechanical and Electrical Engineering, North University of China, Taiyuan 030051, China

²

Institute of Intelligent Weapons, North University of China, Taiyuan 030051, China

³

System Design Institute of Hubei Aerospace Technology Academy, Wuhan 430040, China

^*

Author to whom correspondence should be addressed.

Aerospace 2023, 10(12), 995; https://doi.org/10.3390/aerospace10120995

Submission received: 17 October 2023 / Revised: 15 November 2023 / Accepted: 21 November 2023 / Published: 27 November 2023

(This article belongs to the Special Issue Recent Advances in Ramjets)

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Abstract

In the combustion chamber of scramjets, fuel jets interact with supersonic airflow in the form of a liquid jet in crossflow (LJIC). It is difficult to achieve adequate jet–crossflow mixing and the efficient combustion of fuel in an instant. Large eddy simulation (LES), the coupled level-set and volume of fluid (CLSVOF) method, and an adaptive mesh refinement (AMR) framework are used to simulate supersonic LJICs in this article. This way, LJIC atomization characteristics and mechanisms can be further explored and analyzed in detail. It is found that the surface waves of the liquid column exist in a two-dimensional form, including vertical and spanwise directions. Column breakup occurs when all the spanwise surface waves between adjacent vertical surface waves break up. Bow shock waves, composed of multiple connected arcuate shock waves, are dynamic and will change with the evolution of the liquid column. The vortex ring movement of supersonic LJICs, whose trends in the vertical and spanwise directions are different, is relatively complex, which is due to the complex and time-dependent shape of liquid columns.

Keywords: scramjet; jet in supersonic crossflow; atomization mechanism; vortex ring

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MDPI and ACS Style

Zhou, D.; Chang, J.; Shan, H. Investigations of the Atomization Characteristics and Mechanisms of Liquid Jets in Supersonic Crossflow. Aerospace 2023, 10, 995. https://doi.org/10.3390/aerospace10120995

AMA Style

Zhou D, Chang J, Shan H. Investigations of the Atomization Characteristics and Mechanisms of Liquid Jets in Supersonic Crossflow. Aerospace. 2023; 10(12):995. https://doi.org/10.3390/aerospace10120995

Chicago/Turabian Style

Zhou, Donglong, Jianlong Chang, and Huawei Shan. 2023. "Investigations of the Atomization Characteristics and Mechanisms of Liquid Jets in Supersonic Crossflow" Aerospace 10, no. 12: 995. https://doi.org/10.3390/aerospace10120995

APA Style

Zhou, D., Chang, J., & Shan, H. (2023). Investigations of the Atomization Characteristics and Mechanisms of Liquid Jets in Supersonic Crossflow. Aerospace, 10(12), 995. https://doi.org/10.3390/aerospace10120995

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Investigations of the Atomization Characteristics and Mechanisms of Liquid Jets in Supersonic Crossflow

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