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Numerical study of thermodynamic and hydrodynamics in a type B LNG cargo tank during sloshing excitation
•A 2D CFD model is established to investigate thermodynamic characteristics during sloshing.•Using a customized UDF results in a sinusoidal sloshing excitation.•The sloshing effect on the vapor–liquid interface and BOG mass properties is discussed.•The heat transfer characteristics under different s...
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Published in: | Applied thermal engineering 2024-06, Vol.247, p.123048, Article 123048 |
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Main Authors: | , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites |
Online Access: | Get full text |
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Summary: | •A 2D CFD model is established to investigate thermodynamic characteristics during sloshing.•Using a customized UDF results in a sinusoidal sloshing excitation.•The sloshing effect on the vapor–liquid interface and BOG mass properties is discussed.•The heat transfer characteristics under different sloshing periods and amplitudes are studied.
The hydrodynamics and thermodynamics properties in a type B liquefied natural gas (LNG) cargo tank during sloshing excitation are investigated in this research using the numerical model that takes phase transition and exterior heat leaking into account. In order to forecast the movement of the vapor–liquid interface, the mesh motion treatment in conjunction with the volume of fluid (VOF) approach is used. The user-defined function (UDF) realizes the sloshing excitation. Its viability is confirmed by comparing the numerical model with related fluid sloshing experiments. The impacts of various sloshing periods, amplitudes, and filling rates on the hydrodynamics and thermodynamic properties were examined using numerical analysis of heat flux, the mass of boil off gas (BOG), internal energy, and pressure in the LNG cargo tank. Even with varying filling rates, the numerical findings demonstrate that resonance happens if the sloshing period corresponds to the natural period. As a result, this research serves as essential for gaining a thorough comprehension of thermodynamic, hydrodynamics and BOG mass properties during sloshing excitations in marine LNG transport. |
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ISSN: | 1359-4311 |
DOI: | 10.1016/j.applthermaleng.2024.123048 |