Work

Disk impact on a boiling liquid: Dynamics of the entrapped vapor pocket

Year: 2025

Type: article

Abstract: Upon the impact of a flat disk on a boiling liquid, i.e., a liquid that is in thermal equilibrium with its vapor, a thin vapor pocket is entrapped under the disk. We experimentally investigate the dynamics of the entrapped vapor pocket, focusing on its time evolution and its subsequent influence on the hydrodynamic loads under various conditions. We found that the dynamics of the entrapped vapor pocket is primarily governed by the phase change process, where condensation (vaporization) will induce (frustrate) its rapid collapse, impairing the cushioning. This differs significantly with that of a non-condensable air pocket, which is known to always provide a load reducing cushioning effect.

Source: Physical Review Fluids

DOI: 10.1103/x5wp-x6fl

Authors: Yee Li (Ellis) Fan, Bernardo Palacios Muñiz, Nayoung Kim, Devaraj van der Meer

Institutions: Max Planck University of Twente Center for Complex Fluid Dynamics, University of Twente

Language: English

Topic: Fluid Dynamics and Heat Transfer

Subfield: Computational Mechanics

Field: Engineering

Domain: Physical Sciences

Open Access status: green

Funder: Nederlandse Organisatie voor Wetenschappelijk Onderzoek

Award: G4498738985