Computational study of LNG evaporation and heat diffusion through a LNG cargo tank membrane

Lee, Jang Hyun; Kim, Yoon Jo; Hwang, Se-Yun

doi:10.1016/j.oceaneng.2015.06.045

Cited by 22 publications

(8 citation statements)

References 26 publications

(34 reference statements)

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“…The configurable mass transfer coefficient is 0.1 1/s/K for further analysis of hydrodynamic and thermodynamic evaporation processes. This value is from the model by Lee et al (2015) and has also been described in other researchers' investigations (Saleem et al, 2018;Pan et al, 2020;Bai et al, 2020) for the PCHE evaporation process. The hydrodynamic, thermodynamic, and evaporation processes were observed when the output pressure was 7 MPa and coeff.…”

Section: Results Of Simulation Of Liquefied Natural Gas Regasificatio...supporting

confidence: 62%

“…One of the most suitable models is the fluid model's volume. Lee et al (2015) adopted a computational fluid dynamics (CFD) approach to investigate leaked LNG evaporation through a cargo tank membrane. This model accurately describes mass transfer from liquid to vapour and vice versa during evaporation and condensation, provided specific conditions are set (Saleem et al, 2018;Renardy & Renardy, 2003).…”

Section: Mathematical Models Of Liquefied Natural Gas Transportation ...mentioning

confidence: 99%

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Investigation of hydrodynamic and thermodynamic processes in the liquefied natural gas transportation and regasification system

Semaškaitė

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Section: Results Of Simulation Of Liquefied Natural Gas Regasificatio...supporting

confidence: 62%

Section: Mathematical Models Of Liquefied Natural Gas Transportation ...mentioning

confidence: 99%

Investigation of hydrodynamic and thermodynamic processes in the liquefied natural gas transportation and regasification system

Semaškaitė

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“…Model Volume of Fluid (VOF) [3,4,5] was used for modeling of two-phase condition. The methods and results of evaporation modeling with constant pressure are presented in [6,7,8,9]. The main difficulty of the CFT modeling is the fact the nitrogen evaporation takes place in constant volume [10,11].…”

Section: Numerical Modelingmentioning

confidence: 99%

Numerical Modelling of Evaporation Process in Cryogenic Systems

Шиманов¹,

Uglanov²,

Sarmin³

et al. 2017

MATEC Web Conf.

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Abstract. This article deals with a problem of evaporation numerical modeling in cryogenic systems of constant volume. Particularly, a method of nitrogen evaporation modeling in cryogenic fueling tank was considered. Userdefined functions of nitrogen thermodynamic properties in temperature range of 70...400 K and pressure range of 0.1...30 MPa. The result of this research is calculation algorithm which allows to model processes of phase change in cryogenic systems with constant volume. A comparison obtained between results of numerical modeling with experimental and analytical data is presented. Deviation of results from experimental data is 5-10%.

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“…Several researchers have employed computational fluid dynamics (CFD) to examine the physical phenomena pertaining to the various types of BOG occurrences [19][20][21][22][23]. However, the boil-off rate (BOR) calculations are challenging owing to the complex heat transfer and fluid flow involved, owing to which, the calculation time to ensure the convergence in the case of small steps is extremely large.…”

Section: Introductionmentioning

confidence: 99%

Practical Prediction of the Boil-Off Rate of Independent-Type Storage Tanks

Lee

Cha²,

Kim

et al. 2021

JMSE

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Because environmentally-friendly fuels such as natural gas and hydrogen are primarily stored in the form of cryogenic liquids to enable efficient transportation, the demand for cryogenic fuel (LNG, LH) ships has been increasing as the primary carriers of environmentally-friendly fuels. In such ships, insulation systems must be used to prevent heat inflow to the tank to suppress the generation of boil-off gas (BOG). The presence of BOG can lead to an increased internal pressure, and thus, its control and prediction are key aspects in the design of fuel tanks. In this regard, although the thermal analysis of the phase change through a finite element analysis requires less computational time than that implemented through computational fluid dynamics, the former is relatively more error-prone. Therefore, in this study, a cryogenic fuel tank to be incorporated in ships was established, and the boil-off rate (BOR), measured considering liquid nitrogen, was compared with that obtained using the finite element method. Insulation material with a cubic structure was applied to the cylindrical tank to increase the insulation performance and space efficiency. To predict the BOR through finite element analysis, the effective thermal conductivity was calculated through an empirical correlation and applied to the designed fuel tank. The calculation was predicted to within 1% of the minimum error, and the internal fluid behavior was evaluated by analyzing the vertical temperature profile according to the filling ratio.

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Computational study of LNG evaporation and heat diffusion through a LNG cargo tank membrane

Cited by 22 publications

References 26 publications

Investigation of hydrodynamic and thermodynamic processes in the liquefied natural gas transportation and regasification system

Investigation of hydrodynamic and thermodynamic processes in the liquefied natural gas transportation and regasification system

Numerical Modelling of Evaporation Process in Cryogenic Systems

Practical Prediction of the Boil-Off Rate of Independent-Type Storage Tanks

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