MINI REVIEW article
Front. Phys.
Sec. Fluid Dynamics
Volume 13 - 2025 | doi: 10.3389/fphy.2025.1674248
This article is part of the Research TopicPhysics of Vortices and Vorticity in Flow ControlView all 3 articles
Applications of jet-jet/film impingement for atomization enhancement
Provisionally accepted
- 1Jiangsu University, Zhenjiang, China
- 2Beijing Institute of Technology, Beijing, China
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This mini-review mainly focused on a fundamental problem of jet-jet/film impingement, which exhibits superior fragmentation and atomization characteristics compared to single jet injection and has been widely used in agricultural irrigation and combustion propulsion systems. Firstly, it presents the main controlling parameters and spray characteristic for both jet-jet and jet-film configurations, analyzes the breakup mechanisms, and points out the coupling between jet fragmentation processes and collision-induced or externally imposed vorticity field. Then, the atomization enhancement of jet-jet or jet-film impingement are explained from the aspects of vortex generation, evolution, identification, and the interactions between vorticity fields and spray fields. Finally, representative applications of jet-jet/film impingement in agricultural engineering and aerospace engineering are introduced, so as to achieve spatially uniform spray distribution and efficient fuel/oxidizer mixing characteristics. Future advancements require breakthroughs in crossscale vortex-ligament interaction diagnostics and intelligent control of variable-viscosity fluids to promote deep implementation of this technology in clean energy systems.
Keywords: Jet-jet/film impingement, Atomization, vortex dynamics, Spray injector, Vortex diagnose
Received: 27 Jul 2025; Accepted: 13 Aug 2025.
Copyright: © 2025 He, Feng, Zhang and HE. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence: Zehao Feng, Jiangsu University, Zhenjiang, China
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