A Numerical Study on Dynamic Instability Motion Control of Wave-Piercing High-Speed Planing Craft in Calm Water using Side Appendages

Autor:	Dong Kun Lee, Gyeong-Woo Lee, Sangwon Kim, Kwang-Cheol Seo
Rok vydání:	2017
Předmět:	Engineering business.industry Hull Solver Computational fluid dynamics Overset grid Reynolds-averaged Navier–Stokes equations business Motion control Instability Marine engineering
Zdroj:	Journal of the Korean Society of Marine Environment and Safety. 23:320-329
ISSN:	2287-3341 1229-3431
Popis:	In this research, we have calculated characteristics of wave-piercing high-speed planing hull, by using a RANS solver and overset grid method, for comparing with experimental measurements of that and simulating with several appendages, since the computed results of commercial CFD code look reasonable for the prediction of the performances of planing hulls on calm water in planing conditions. As a result, it is confirmed that the dynamic instability phenomena in pitch and heave motions (porpoising) occurred after a certain FnV, and effectively suppressed using some of appendages, especially the 0.5L spray rail is suppressed to 24-55 % in the pitch motion and 33-55 % in the heave motion. In spray phenomenon, 1L hard chine suppress spray effectively and it is effective to set the angle of appendages to be less than 0° in order to suppress wave.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::9e1d545b46e05adf226059bec4f7ae61 https://doi.org/10.7837/kosomes.2017.23.3.320 Zobrazit plný text záznamu