Experimental study of the turbulent bubbly flows: entrainment and breakup 21-000001344
Abstract
Turbulent bubbly wake behind a surface ship can persist for 100 km astern, covering a wide range of length scales and posing significant challenges to both experimental investigations and hydrodynamic simulations. Although high-performance computing in hydrodynamic simulations develops many tools with unprecedented resolution and fidelity, those simulations on the near wake of surface ships still lack experimental validations at relevant flow conditions. As a result, simulations still rely on parameters tuning and phenomenological models to provide predictions of the key physical quantities that are crucial to both the hydrodynamics and acoustics of surface ships. It is the goal of the proposed work to establish a comprehensive experimental frameworkto acquire important benchmarking datasets and unveil the key physics in the extreme flow regimehigh energy dissipation rate and high void fractionthat is relevant to naval hydrodynamics. To address the unique technical challenges that this flow regime presents, two facilities will be used, and both facilities are equipped with state-of-the-art diagnostic tools to unveil the mechanisms of bubble entrainment and breakup in a turbulent environment.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Mar 15, 2021
- Source ID
- N000142112083
Entities
People
- Rui Ni
Organizations
- Johns Hopkins University
- Office of Naval Research
- United States Navy