Numerical study of the late-stage flow features and stripping in shock liquid drop interaction
Journal article
| Authors | Onwuegbu, S., Yang, Z. and Xie, J. |
|---|---|
| Abstract | Three-dimensional (3D) computational fluid dynamic (CFD) simulations have been performed to investigate the complex flow features and stripping of fluid materials from a cylindrical water drop at the late-stage in a Shock Liquid Drop Interaction (SLDI) process when the drop’s downstream end experiences compression after it is impacted by a supersonic shock wave (𝑀𝑎 = 1.47). The drop trajectory/breakup has been simulated using a Lagrangian model and the unsteady Reynolds-averaged Navier–Stokes (URANS) approach has been employed for simulating the ambient airflow. The Kelvin–Helmholtz Rayleigh–Taylor (KHRT) breakup model has been used to capture the liquid drop fragmentation process and a coupled level-set volume of fluid (CLSVOF) method has been applied to investigate the topological transformations at the air/water interface. The predicted changes of the drop length/width/area with time have been compared against experimental measurements, and a very good agreement has been obtained. The complex flow features and the qualitative characteristics of the material stripping process in the compression phase, as well as disintegration and flattening of the drop are analyzed via comprehensive flow visualization. Characteristics of the drop distortion and fragmentation in the stripping breakup mode, and the development of turbulence at the later stage of the shock drop interaction process are also examined. Finally, this study investigated the effect of increasing 𝑀𝑎 |
| Keywords | Shock Liquid Drop Interaction (SLDI); unsteady Reynolds-averaged Navier–Stokes (URANS); stripping; Kelvin–Helmholtz Rayleigh–Taylor (KHRT); breakup model; micro-droplet |
| Year | 2025 |
| Journal | Aerospace |
| Journal citation | 12 (8), pp. 1-38 |
| Publisher | MDPI |
| ISSN | 2226-4310 |
| Digital Object Identifier (DOI) | https://doi.org/10.3390/aerospace12080648 |
| Web address (URL) | https://www.mdpi.com/2226-4310/12/8/648 |
| Publisher's version | License File Access Level Open |
| Output status | Published |
| Publication dates | |
| Online | 22 Jul 2025 |
| Publication process dates | |
| Accepted | 15 Jul 2025 |
| Deposited | 06 Aug 2025 |
https://repository.derby.ac.uk/item/qz23q/numerical-study-of-the-late-stage-flow-features-and-stripping-in-shock-liquid-drop-interaction
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