Analysis of high-speed drop impact onto deep liquid pool
Article dans une revue avec comité de lecture
Date
2023-10Journal
Journal of Fluid MechanicsAbstract
The present work is devoted to the analysis of drop impact on a deep liquid pool, focusing on the high-energy splashing regimes caused by large raindrops at high velocities. Such cases are characterized by short time scales and complex mechanisms, thus they have received very little attention until now. The BASILISK open-source solver is used to perform three-dimensional direct numerical simulations. The capabilities of octree adaptive mesh refinement techniques enable capturing of the small-scale features of the flow, while the volume of fluid approach combined with a balanced-force surface-tension calculation is applied to advect the volume fraction of the liquids and reconstruct the interfaces. The numerical results compare well with experimental visualizations: both the evolution of crown and cavity, the emanation of ligaments, the formation of bubble canopy and the growth of a downward-moving spiral jet that pierces through the cavity bottom, are correctly reproduced. Reliable quantitative agreements are also obtained regarding the time evolution of rim positions, cavity dimensions and droplet distributions through an observation window. Furthermore, simulation gives access to various aspects of the internal flows, which allows us to better explain the observed physical phenomena. Details of the early-time dynamics of bubble ring entrapment and splashing performance, the formation/collapse of bubble canopy and the spreading of drop liquid are discussed. The statistics of droplet size show the bimodal distribution in time, corroborating distinct primary mechanisms of droplet production at different stages.
Files in this item
- Name:
- LMFL_JFM_2023_WANGHUI_Analysis ...
- Size:
- 3.884Mb
- Format:
- Embargoed until:
- 2024-05-01
Related items
Showing items related by title, author, creator and subject.
-
Wave statistics and energy dissipation of shallow-water breaking waves in a tank with a level bottom Article dans une revue avec comité de lectureLIU, Shuo; WANG, Hui; BAYEUL-LAINÉ, Annie-Claude; LI, Cheng; KATZ, Joseph; COUTIER-DELGOSHA, Olivier (Cambridge University Press (CUP), 2023-11)The present study focuses on two-dimensional direct numerical simulations of shallow-water breaking waves, specifically those generated by a wave plate at constant water depths. The primary objective is to quantitatively ...
-
Communication avec acteWANG, Hui; LIU, Shuo; COUTIER-DELGOSHA, Olivier; BAYEUL-LAINÉ, Annie-Claude (Department of Fluid Mechanics Budapest University of Technology and Economics, 2022-09)In this work, high-speed drop impact onto deep volume of the same liquid is numerically studied in 3D using Direct Numerical Simulation (DNS). The numerical results are compared with the previous experimental works by ...
-
Communication avec acteLIU, Shuo; WANG, Hui; COUTIER-DELGOSHA, Olivier; BAYEUL-LAINÉ, Annie-Claude (Department of Fluid Mechanics Budapest University of Technology and Economics, 2022-09)We present direct numerical simulation of breaking waves in shallow water generated by the wave plate. The open-source Basilisk solver is used to solve the incompressible, variable-density, twophase Navier-Stokes equations ...
-
Article dans une revue avec comité de lectureThe goal of the present work deals with the influence of the oscillating freestream on the global performance, transition and vortex dynamics of forward and reversed airfoils. Three important parameters, involving the ...
-
Article dans une revue avec comité de lectureThe laminar-turbulence transition phenomenon widely exists on the surface of many energy equipment, which is deserved to be studied because of the complex mechanics and some induced undesirable consequences. The goal of ...