| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Rear-Surface Deformation of a Water Drop in Aero-Breakup of Shear Mode |
| Xiang-Yu Yi1, Yu-Jian Zhu1**, Ji-Ming Yang1**, Tun Wang1, Ming-Yu Sun2 |
1Department of Modern Mechanics, University of Science and Technology of China, Hefei 230027
2Institute of Fluid Science, Tohoku University, Sendai 980-8577, Japan
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| Cite this article: |
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Xiang-Yu Yi, Yu-Jian Zhu, Ji-Ming Yang et al 2017 Chin. Phys. Lett. 34 084701 |
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Abstract Deformation of water drops in shock-induced high-speed flows is investigated with a focus to the influence of primitive flow parameters on the rear-surface deformation features. Two typical deformation patterns are discovered through high-speed photography. A simple equation to evaluate the radial acceleration of the drop surface is derived. The combined use of this equation and outer flow simulation makes it possible for us to reconstruct the profiles of the early deformed drops. The results agree well with the experiments. Further analysis shows that the duration of flow establishment with respect to the overall breakup time shapes the rear side profile of the drop. Thereby the ratio of the two times, expressed as the square root of the density ratio, appears to be an effective indicator of the deformation features.
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Received: 10 May 2017
Published: 22 July 2017
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| Fund: Supported by the National Natural Science Foundation of China under Grant Nos 11102204, 11572313 and 11621202, and the Natural Science Foundation of Anhui Province under Grant No 1608085MA16. |
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