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Pregled bibliografske jedinice broj: 637401

ROLL DAMPING COEFFICIENTS ASSESSMENT AND COMPARISON FOR ROUND BILGE AND HARD CHINE HULLFORMS


Begović, Ermina; Bertoreli, Carlo; Prpić-Oršić, Jasna
ROLL DAMPING COEFFICIENTS ASSESSMENT AND COMPARISON FOR ROUND BILGE AND HARD CHINE HULLFORMS // Proceedings of the ASME 2013 32nd International Conference on Ocean, Offshore and Arctic Engineering / American Society of Mechanical Engineers (ur.).
New York (NY): American Society of Mechanical Engineers (ASME), 2013. str. 1-9 (predavanje, međunarodna recenzija, cjeloviti rad (in extenso), znanstveni)


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Naslov
ROLL DAMPING COEFFICIENTS ASSESSMENT AND COMPARISON FOR ROUND BILGE AND HARD CHINE HULLFORMS

Autori
Begović, Ermina ; Bertoreli, Carlo ; Prpić-Oršić, Jasna

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

Izvornik
Proceedings of the ASME 2013 32nd International Conference on Ocean, Offshore and Arctic Engineering / American Society of Mechanical Engineers - New York (NY) : American Society of Mechanical Engineers (ASME), 2013, 1-9

Skup
32nd International Conference on Ocean, Offshore and Arctic Engineering

Mjesto i datum
Nantes, Francuska, 09.06.2013. - 14.06.2013

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Rool damping; round bilge hull; hard chine hull

Sažetak
The sustainable design of small passenger vessels and large size pleasure craft indicates new trends: lower speed, reduced fuel consumption and better seakeeping in all range of velocities. Small amplitudes of roll motion are considered one of the most important comfort parameter. These trends call for reviewing some commonly used concepts and designer practice. Fundamental parameters as metacentric height and midsection form affect comfort as well as ship safety in counteracting way. Round bilge, due to good seakeeping characteristics and to large amount of available data from systematic series is the most common hull form choice when cruising speed implies displacement or semi displacement mode. Hard chine hull forms are generally chosen when relative speed leads to some hydrodynamic lift, although recently they have been considered for low relative speed. They allow simplified and cheaper construction and among their interesting features is higher roll damping. This appears very attractive for craft that are generally fitted with stabilizing systems and ask for the most reduced roll motions at any and zero speed. This paper presents the results of experimental tests relative to roll decay of two ship models of the same dimensions, displacement and GM values: they have the same warped bottom hull form developed at University of Naples, the first is hard chine and the second has round bilge from transom to midship. Both of them are suitable for displacement and semidisplacement craft operating at medium-low relative speed. The tests have been carried out at University of Naples towing tank, in calm water, at Fn ranging from 0.0 to 0.45. Natural roll frequencies and linear and non linear damping coefficients are reported for all tested speeds allowing a fair comparison of the roll characteristics due to the variation in hull form.

Izvorni jezik
Engleski

Znanstvena područja
Brodogradnja



POVEZANOST RADA


Projekti:
069-0691736-1667 - Numeričko modeliranje hidrodinamičkog opterećenja i odziva pomorskih objekata (Prpić-Oršić, Jasna, MZOS ) ( CroRIS)

Ustanove:
Tehnički fakultet, Rijeka

Profili:

Avatar Url Jasna Prpić-Oršić (autor)

Avatar Url Ermina Begović (autor)


Citiraj ovu publikaciju:

Begović, Ermina; Bertoreli, Carlo; Prpić-Oršić, Jasna
ROLL DAMPING COEFFICIENTS ASSESSMENT AND COMPARISON FOR ROUND BILGE AND HARD CHINE HULLFORMS // Proceedings of the ASME 2013 32nd International Conference on Ocean, Offshore and Arctic Engineering / American Society of Mechanical Engineers (ur.).
New York (NY): American Society of Mechanical Engineers (ASME), 2013. str. 1-9 (predavanje, međunarodna recenzija, cjeloviti rad (in extenso), znanstveni)
Begović, E., Bertoreli, C. & Prpić-Oršić, J. (2013) ROLL DAMPING COEFFICIENTS ASSESSMENT AND COMPARISON FOR ROUND BILGE AND HARD CHINE HULLFORMS. U: American Society of Mechanical Engineers (ur.)Proceedings of the ASME 2013 32nd International Conference on Ocean, Offshore and Arctic Engineering.
@article{article, author = {Begovi\'{c}, Ermina and Bertoreli, Carlo and Prpi\'{c}-Or\v{s}i\'{c}, Jasna}, year = {2013}, pages = {1-9}, keywords = {Rool damping, round bilge hull, hard chine hull}, title = {ROLL DAMPING COEFFICIENTS ASSESSMENT AND COMPARISON FOR ROUND BILGE AND HARD CHINE HULLFORMS}, keyword = {Rool damping, round bilge hull, hard chine hull}, publisher = {American Society of Mechanical Engineers (ASME)}, publisherplace = {Nantes, Francuska} }
@article{article, author = {Begovi\'{c}, Ermina and Bertoreli, Carlo and Prpi\'{c}-Or\v{s}i\'{c}, Jasna}, year = {2013}, pages = {1-9}, keywords = {Rool damping, round bilge hull, hard chine hull}, title = {ROLL DAMPING COEFFICIENTS ASSESSMENT AND COMPARISON FOR ROUND BILGE AND HARD CHINE HULLFORMS}, keyword = {Rool damping, round bilge hull, hard chine hull}, publisher = {American Society of Mechanical Engineers (ASME)}, publisherplace = {Nantes, Francuska} }




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