Prediction Of Sloshing On The Inside Walls Of Membrane Type Tank For LNG Carrier Due To Heaving And Pitching Motion In Regular Wave

Suastika, Ketut and Anwar, Muhamad Syaiful (2013) Prediction Of Sloshing On The Inside Walls Of Membrane Type Tank For LNG Carrier Due To Heaving And Pitching Motion In Regular Wave. In: Seminar Teori dan Aplikasi Teknologi Kelautan. Senta 2013, 03 Desesmber 2013, Aula BG Munav, FTK-ITS, Surabaya-Indonesia.

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Abstract

The development of an offshore LNG sector and the increase demand's for operationai flexibility in LNG shipping bring the new challenges for sloshing assessment on ship motion of partially filled LNG inside tanks. Frequently, the ship sails in a head head sea, therefore the heaving and pitching motions became important. Sloshing can be interpreted as the free surface motion of fluid in a container. The motion of LNG membrane tank caused by ship motion may produce large pressures on the walls of the tank structure. The dimensions of the membrane tank are 32.46 m in length, 27.32 m height and 39.17 m width moulded. But the alt lower width is 31.29 m, alt upper width is 21.49 m and moulded front width is about 19.4 m, the front lower width is 11.9 m and front upper width is l8.5 m. The LNG has been simulated for the three variations of filling levels: 30%, 50%, and 80% of membrane tank height which is the simulalion of sloshing were performed by using CFD. Simulation results show that the maximum dynamic pressure occuned at 30% of LNG filling level, equal to 5122.34 Pa on the aft wall node of the membrane tank at 10.92 m from the bottom of the membrane tank. Furthermore, the lower of the filling level, the larger is the dynamic pressure.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: 3D Coupled, Heaving, LNG Carrier, Membrane tank, Sloshing, Pitching
Subjects: T Technology > TA Engineering (General). Civil engineering (General) > TA357.5.S57 Sloshing
T Technology > TA Engineering (General). Civil engineering (General) > TA660.T34 Tanks. Pressure vessels
Divisions: Faculty of Marine Technology (MARTECH) > Naval Architecture and Shipbuilding Engineering
Depositing User: - Davi Wah
Date Deposited: 02 Aug 2019 03:52
Last Modified: 02 Aug 2019 03:52
URI: http://repository.its.ac.id/id/eprint/68941

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