Typhoon: A vortex-lattice code for assessing dynamic stability characteristics of hydrofoil crafts

Issue title: Selected papers from the 26th HISWA International Symposium on Yacht Design and Yacht Construction

Guest editors: Hans Hopman

Article type: Research Article

Authors: Bagué, Alec^a | Degroote, Joris^b | Demeester, Toon^b | Lataire, Evert^{a; *}

Affiliations: [a] Faculty of Engineering and Architecture, Maritime Technology, Ghent University, Ghent, Belgium | [b] Faculty of Engineering and Architecture, Fluid Mechanics, Ghent University, Ghent, Belgium

Correspondence: [*] Corresponding author. E-mail: [email protected].

Abstract: In this paper an open-source implementation of the vortex-lattice method to perform a dynamic stability analysis for hydrofoil crafts is discussed. The difference with existing vortex-lattice codes is the addition of a free-surface boundary condition which is needed to analyse surface piercing foils. This code, called Typhoon, can be used to perform a dynamic stability analysis (DSA) on hydrofoil vessels. The goal of this code is to have an easy-to-use and cheap alternative to compare different designs in early design stages. This paper gives a brief background to all the concepts used, followed by a short theoretical explanation of the vortex-lattice method. The second part of this paper focuses on a practical example of how this code can be used on an example.

Keywords: Foiling, vortex-lattice method, free-surface, dynamic stability

DOI: 10.3233/ISP-210006

Journal: International Shipbuilding Progress, vol. 68, no. 1-2, pp. 61-78, 2021