@inproceedings{e322c546b150476b879b8ce465ce2a02,
title = "A two-dimensional numerical study of radiation of piston mode fluid resonance in a narrow gap",
abstract = "Radiation damping may play an important role in the prediction of gap resonance amplitude by potential flow models. In this paper, the radiation of the gap resonance between twin fixed floating boxes is numerically studied by using a linear potential flow model in frequency domain. An impermeable lid is forced to heave at the free surface in the gap. The characteristics of its added mass and radiation damping, and radiation wave amplitude in the far field are calculated under various geometric conditions. Moreover, the ratio of radiation damping to the viscous damping due to wall friction and/or flow separation is quantified. We find that the ratio of the viscous damping force due to wall friction to radiation damping is approximately 34%~43%, and that due to flow separation to radiation damping is about 140%~320%. The results well explain the prediction performance of potential flow models with/without the viscous damping due to wall friction and/or flow separation.",
keywords = "Gap resonance, Piston mode, Radiation damping, Wave radiation",
author = "Lei Tan and Tomoki Ikoma and Yasuhiro Aida and Koichi Masuda",
note = "Publisher Copyright: {\textcopyright} 2021 by the International Society of Offshore and Polar Engineers (ISOPE).; 31st International Ocean and Polar Engineering Conference, ISOPE 2021 ; Conference date: 20-06-2021 Through 25-06-2021",
year = "2021",
language = "English",
isbn = "9781880653821",
series = "Proceedings of the International Offshore and Polar Engineering Conference",
publisher = "International Society of Offshore and Polar Engineers",
pages = "1680--1686",
booktitle = "Proceedings of the 31st International Ocean and Polar Engineering Conference, ISOPE 2021",
}