Application of Central-Weighted Essentially Non-Oscillatory Finite-Volume Interface-Capturing Schemes for Modeling Cavitation Induced by an Underwater Explosion

• DOI: 10.3390/fluids9020033
• Publication Date: 2024-01-29T17:25:01Z
• Authors: Ebenezer Mayowa A...; Panagiotis Tsouts...; Karl W. Jenkins
• Keywords: Underwater explosion; Interface (matter)

Cavitation resulting from underwater explosions in compressible multiphase or multicomponent flows presents significant challenges due to the dynamic nature of shock–cavitation–structure interactions, as well complex and discontinuous involved interfaces. Achieving accurate resolution interfaces between different phases components, presence shocks, cavitating regions, structural is crucial for modeling such problems. Furthermore, pressure convergence simulations involving interactions requires algorithms. In this research paper, we employ diffuse interface method, also known interface-capturing scheme, investigate cavitation various explosion test cases near surfaces: a free surface rigid surface. The are conducted using unstructured Navier–Stokes (UCNS3D) finite-volume framework employing central-weighted essentially non-oscillatory (CWENO) reconstruction schemes, utilizing five-equation family methods. Quantitative comparisons made performance both models. Additionally, examine effects secondary loading source on structures, evaluate ability CWENO schemes accurately capture resolve material fluids with minimal numerical dissipation smearing. results compared existing high-order methods experimental data, where possible, demonstrate robustness simulating bubble dynamics, their limitations within current implementation capturing.