Numerička analiza operativnosti kontejnerskog broda na valovitom moru te utjecaj upravljanja na valna opterećenja

Mudronja, Luka and Ćorak, Maro and Parunov, Joško and Vidan, Pero and Malenica, Šime (2014) Numerička analiza operativnosti kontejnerskog broda na valovitom moru te utjecaj upravljanja na valna opterećenja. = Numerical evaluation of operability envelope for ultra large container ship in extreme seas and influence of maneuvering on wave loads. In: XXI. simpozij Teorija i praksa brodogradnje, in memoriam prof. Leopold Sorta = The 21st symposium Theory and practice shipbuilding, in memoriam prof. Leopold Sorta, 02-04.10.2014., Baška; Croatia.

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Abstract (Croatian)

Rad prikazuje spoj dva međusobno povezana pristupa upravljanju brodom u nevremenu. Savjeti pomorcima za upravljanje brodom su prvi dio. Drugi dio je utjecaj upravljanja na iznos opterećenja od valova. Savjeti pomorcima su prikazani zadovoljavanjem ili premašivanjem kriterija operativnosti broda. Utjecaj upravljanja brodom na iznos valnog opterećenja je prikazan preko iznosa momenta savijanja na glavnom rebru. Za praktični prikaz poslužio je 9200 TEU brod za prijevoz kontejnera. Numeričkom 3D panel metodom su izračunate prijenosne funkcije komponenti gibanja te su iskorištene za analizu operativnosti u nevremenu opisanom prema preporuci IACS No. 34. Za spektralnu analizu kratkotrajnog stanja mora korišten je 2-P Pierson-Moskowitz spektar valova. Momenti savijanja izračunati su preko „closed-form“ jednadžbi. Rezultati su dijagrami operativnosti i brzina te polarni dijagram. Zaključak rada su prijedlozi za unaprijeđenje pristupa upravljanja brodom u nevremenu te podloge za daljna istraživanja.

Abstract

This paper presents two interconnected parts of ship navigation in extreme seas. Possibilities and advices for ship maneuvering for seafarers are one part. Another part is influence of ship maneuvering on wave loads. Principle for making advices is made on operability criteria platform. Influence of maneuvering on wave loads is defined through amount of wave bending moment amidship. Practical example is made for 9200 TEU container ship. Numerical evaluation is carried out via 3D panel method. 2-P Pierson– Moskowitz wave spectrum is used for short term spectral analysis. Rough weather is described according to the IACS recommendation Note No.34. Closedform expressions are used for quick estimate of wave induced bending moment. Results are presented in operability polar plots, operability diagram and speed diagram. In the conclusion, suggestions for better approach in maneuvering calculations are provided and connection of ship operability and amount of wave loads is commented with guidelines for the future research.

Item Type:	Conference or Workshop Item (Lecture)
Uncontrolled Keywords:	kontejnerski brod; kriteriji operativnosti; 3D panel metoda; moment savijanja
Keywords (Croatian):	container ship; operational criteria; 3D panel method; wave induced bending moment
Subjects:	TECHNICAL SCIENCE > Shipbuilding
Divisions:	600 Department of Naval Engineering and Marine Technology > 620 Chair of Marine Structures Design
Indexed in Web of Science:	No
Indexed in Current Contents:	No
Date Deposited:	18 May 2015 07:35
Last Modified:	05 Oct 2017 13:27
URI:	http://repozitorij.fsb.hr/id/eprint/4172

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