Naslov
Frequency Independent Model Error of Closed-Form Expressions for Calculating Wave-Induced Ship Motions in Vertical Plane

Autori
Petranović, Tamara ; Gledić, Ivana ; Mikulić, Antonio ; Parunov, Joško

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
PRADS 2022 Proceedings / Vladimir, Nikola ; Malenica, Šime ; Senjanović, Ivo - Zagreb : Fakultet strojarstva i brodogradnje Sveučilišta u Zagrebu, 2022, 883-893

ISBN
978-953-7738-87-7

Skup
15th International Symposium on Practical Design of Ships and Other Floating Structures PRADS 2022

Mjesto i datum
Dubrovnik, Hrvatska, 09.10.2022. - 13.10.2022

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Closed-form expressions ; Frequency Independent model error ; Seakeeping

Sažetak
Closed-form expressions (CFE) enable rapid computation of amplitudes of transfer functions of ship motion and global loads, based only on main ship particulars. As preliminary comparisons indicated reasonable agreement of CFE with experimental results, CFE have been used in many conceptual studies where fast computation of ship motions and loads is crucial. Since there is still an open question of the model error introduced by using CFE instead of more complex seakeeping tools, the aim of the present study is to quantify frequency independent model error (FIME) of CFE for ship motion in vertical plane. FIME is determined by comparing transfer functions calculated by CFE with model-scale experiments. Measured transfer functions of heave and pitch for eleven ships of different types and sizes are taken from the literature, where several speeds and heading angles are available for some of them. Multivariate linear regression analysis is performed to show dependence of FIME on the main parameters of the analysis. Outcomes of this study could enhance practical applicability of CFE.

Izvorni jezik
Engleski

Znanstvena područja
Brodogradnja

POVEZANOST RADA