钢球入油引起的空腔塌陷

IF 2.5 3区工程技术 Q2 MECHANICS

European Journal of Mechanics B-fluids Pub Date : 2025-09-26 DOI:10.1016/j.euromechflu.2025.204381

Benedict C.-W. Tan

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引用次数: 0

摘要

实验研究了钢球垂直进入油池后深度密封后立即发生的空腔向液面塌陷现象。在空腔向地表塌陷的过程中，掐断深度与空腔底部之间的垂直位移是通过高速摄像机拍摄的图像进行定期测量和分析的。此外，还对空腔坍塌过程中产生的向上喷油现象进行了描述和简要研究。结果表明，空腔向地表塌陷的速度以及油射流下部到达地表所需的时间取决于球体的惯性和重力。

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Cavity collapse associated with oil entry of steel spheres

The collapse of air cavity towards the liquid surface that occurred immediately after deep seal following vertical entry of steel spheres into a pool of oil, was experimentally investigated. The vertical displacement between the pinch-off depth and the cavity base during the time when the cavity was collapsing towards the surface, was regularly measured and analysed using images taken from a high-speed camera. Furthermore, some phenomena associated with the upward oil jet generated during cavity collapse were also described and briefly studied. The results suggested that the rate of cavity collapse towards the surface, and the time taken for the lower part of the oil jet to reach surface level, were dependent on both the inertial and gravitational forces of the spheres.

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来源期刊

European Journal of Mechanics B-fluids 物理-力学

CiteScore

5.90

自引率

3.80%

发文量

127

审稿时长

58 days

期刊介绍： The European Journal of Mechanics - B/Fluids publishes papers in all fields of fluid mechanics. Although investigations in well-established areas are within the scope of the journal, recent developments and innovative ideas are particularly welcome. Theoretical, computational and experimental papers are equally welcome. Mathematical methods, be they deterministic or stochastic, analytical or numerical, will be accepted provided they serve to clarify some identifiable problems in fluid mechanics, and provided the significance of results is explained. Similarly, experimental papers must add physical insight in to the understanding of fluid mechanics.