Naslov
Free-Outflow Modelling in the Linearised Progressive Flooding Simulation Methodology

Autori
Braidotti, Luca ; Prpić-Oršić, Jasna ; Valčić, Marko

Kolaboracija
University of Trieste

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

Izvornik
Proceedings of the 15th International Symposium on Practical Design of Ships and Other Floating Structures (PRADS 2022) / Vladimir, Nikola ; Malenica, Šime ; Senjanović, Ivo - Zagreb : Fakultet strojarstva i brodogradnje Sveučilišta u Zagrebu, 2022, 987-994

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
progressive flooding ; fast simulation ; linearisation ; free-outflow

Sažetak
In linearised progressive flooding simulations, special attention shall be given to the damage and internal openings modelling. The steady Bernoulli equation, which is usually employed in quasistatic progressive flooding simulations, applies to the deeply-submerged case only. However, during progressive flooding of a damaged ship, free-outflow often occurs. In a linearised simulation tool, the integration of the different hydraulic behaviour related to free-outflow is not straightforward, since affects the linearisation process of the governing equations. Nevertheless, to assure the reliability and accuracy of the simulation technique, it is mandatory to consider the free-outflow case too. In this work, a methodology is presented to extend the linearised progressive flooding simulation technique to cope with free-outflow. The object is achieved through the introduction of a correction coefficient on the free-outflow area of the opening that is computed at each time step during differential equations integration. The proposed method is validated with a model scale flooding test highlighting also the errors that arise by discarding the free-outflow modelling.

Izvorni jezik
Engleski

Znanstvena područja
Brodogradnja, Tehnologija prometa i transport

POVEZANOST RADA