Effect of swirling strength on droplets impact on concave wall: Experimental and numerical investigation

IF 1.9 3区工程技术 Q1 NUCLEAR SCIENCE & TECHNOLOGY

Annals of Nuclear Energy Pub Date : 2025-03-24 DOI:10.1016/j.anucene.2025.111282

Shuo OUYANG , Zhenqin Xiong , Hua Bei , Kaicheng Yu , Lichen Xue , Jiyun Zhao

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Abstract

Droplets impact on walls in a rotating gas–liquid flow field is common in industrial applications. To reveal the effect of swirling strength on droplet impact outcome, droplet trajectory and impingements on the concave wall with three kinds of swirlers are investigated by numerical simulation and experiment. Three impact outcomes are observed: downward slide spreading, horizontal slide spreading, and upward slide spreading. It is found that the swirling strength affects the impact outcome and the spreading factors. The transition from the upward slide spreading to other impact outcomes is promoted by increasing the swirling strength. Moreover, a theoretical model is deduced for the maximum transverse spreading factor of the droplets impact on the concave wall in a rotating gas flow field by modifying the surface energy and adding the auxiliary dissipation. The discrepancies between the predicted maximum transverse spreading factors and the experimental results are in the range of + 5 %∼-10 %.

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来源期刊

Annals of Nuclear Energy 工程技术-核科学技术

CiteScore

4.30

自引率

21.10%

发文量

632

审稿时长

7.3 months

期刊介绍： Annals of Nuclear Energy provides an international medium for the communication of original research, ideas and developments in all areas of the field of nuclear energy science and technology. Its scope embraces nuclear fuel reserves, fuel cycles and cost, materials, processing, system and component technology (fission only), design and optimization, direct conversion of nuclear energy sources, environmental control, reactor physics, heat transfer and fluid dynamics, structural analysis, fuel management, future developments, nuclear fuel and safety, nuclear aerosol, neutron physics, computer technology (both software and hardware), risk assessment, radioactive waste disposal and reactor thermal hydraulics. Papers submitted to Annals need to demonstrate a clear link to nuclear power generation/nuclear engineering. Papers which deal with pure nuclear physics, pure health physics, imaging, or attenuation and shielding properties of concretes and various geological materials are not within the scope of the journal. Also, papers that deal with policy or economics are not within the scope of the journal.