Near-surface dynamics of a gas bubble collapsing above a crevice
Abstract
The impact of a collapsing gas bubble above rigid, notched walls is considered. Such surface crevices and imperfections often function as bubble nucleation sites, and thus have a direct relation to cavitation-induced erosion and damage structures. A generic configuration is investigated numerically using a second-order-accurate compressible multi-component flow solver in a two-dimensional axisymmetric coordinate system. Results show that the crevice geometry has a significant effect on the collapse dynamics, jet formation, subsequent wave dynamics, and interactions. The wall-pressure distribution associated with erosion potential is a direct consequence of development and intensity of these flow phenomena.
Keywords
Cite
@article{arxiv.1912.07022,
title = {Near-surface dynamics of a gas bubble collapsing above a crevice},
author = {Theresa Trummler and Spencer H. Bryngelson and Kevin Schmidmayer and Steffen J. Schmidt and Tim Colonius and Nikolaus A. Adams},
journal= {arXiv preprint arXiv:1912.07022},
year = {2020}
}
Comments
21 pages, 16 figures, submitted to the Journal of Fluid Mechanics