Numerical study of pressure build-up in vertical tanks for cryogenic flammables storage

Ovidi, Federica; Pagni, Elena; Landucci, Gabriele; Galletti, Chiara

doi:10.1016/j.applthermaleng.2019.114079

Cited by 18 publications

(8 citation statements)

References 19 publications

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“… It is anticipated that solidification and melting will play a pivotal role in the forthcoming industrial revolution concerning manufacturing and materials self-healing Despite the extensive benefits, phase changes may occasionally induce adverse effects, such as the self-pressurization caused by evaporation in a cryogenic storage tank and flash-induced instability during liquid transport …”

Section: Introductionmentioning

confidence: 99%

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Recent Advances in CFD Simulations of Multiphase Flow Processes with Phase Change

Zhu

Zhang

et al. 2023

Ind. Eng. Chem. Res.

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Phase change is a phenomenon that has been extensively utilized in chemical engineering, energy, electronics, vehicle, and space exploration. From both the science and engineering perspectives, gaining a profound understanding of the intricacies of multiphase flow processes accompanied by heat and mass transfer due to phase change is of fundamental importance. Indeed, the computational fluid dynamics (CFD) has been increasingly applied as an effective tool to give an in-depth and efficient analysis of the phase change processes, thereby enhancing our understanding and capacity to control and optimize the phase change effects in these processes. This paper seeks to provide a comprehensive review of the utilization of CFD methodologies in the simulations of phase change flows across various applications, including temperature management, drying, separation and purification, and others. First, the CFD models at various scales that are developed to elucidate the phase change processes are summarized. Second, the noteworthy advances in the recent CFD simulation work on various phase change processes are presented, respectively. Finally, the challenges and potential prospects to facilitate the application of the phase change flow are discussed. The current review aims to offer insightful guidance for the CFD modeling of phase change processes in numerous engineering application scenarios.

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Section: Introductionmentioning

confidence: 99%

“…Despite the extensive benefits, phase changes may occasionally induce adverse effects, such as the self-pressurization caused by evaporation in a cryogenic storage tank and flash-induced instability during liquid transport …”

Section: Introductionmentioning

confidence: 99%

Recent Advances in CFD Simulations of Multiphase Flow Processes with Phase Change

Zhu

Zhang

et al. 2023

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

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“…They compared the effects of various working fluids, boundary conditions, and liquid filling rates on the tank's self-pressurization and thermal stratification. Ovidi et al [13] used the CFD method to analyze the thermal stratification and self-pressurization of the liquid phase in a cylindrical liquefied natural gas tank due to thermal boundary. Liu et al [14] established a CFD model of cryogenic liquid oxygen tanks, studied the self-pressurization and thermal stratification in cryogenic tanks, and gave the temperature distribution and pressure change in cryogenic liquid oxygen tanks.…”

Section: Introductionmentioning

confidence: 99%

Study on the Self-Pressurization Laws of Cryogenic Liquid Krypton Tank for the Electric Propulsion System

Chen

Zhu²,

Zhao³

et al. 2023

J. Phys.: Conf. Ser.

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To meet the application requirements of zero boil-off storage of cryogenic liquid krypton propellant in the process of completing deep space exploration missions by electric propulsion system, it is important to study the thermodynamic changes in cryogenic liquid krypton tanks under different environments. The gas phase and liquid phase material model of krypton working fluid, the gas-liquid phase change model at the interface layers, and the heat transfer process between the wall and the internal fluid are established by ANSYS-Fluent. The energy source term, gas phase, liquid phase mass source term, and phase change saturation temperature in the liquid krypton cryogenic tank are defined. This paper’s three influencing factors of gravity, initial liquid filling rate, and wall heat leakage are simulated and analysed. The results show that: (1) The self-pressurization rate significantly rises as the wall heat flux rises, and the gas-liquid interface drops less quickly. The pressure and temperature in the tank are also increasing at the same liquid level. (2) In the normal gravity environment, the bigger the filling rate, the lower the corresponding self-pressurization rate. (3) In the process of variable gravity, the gas pressurization rate in the cryogenic liquid krypton tank falls with the decrease of gravity.

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“…Felipe et al [38] provided a rule of thumb for estimating the temperature of evaporated gas in industrial storage tanks and developed an unbalanced model related to LNG evaporation from large storage tanks at constant pressure. Federica et al [39] used CFD technology to simulate the self-pressurization behavior of cryogenic storage tanks. The evaporation of ethylene and methane in storage tanks was studied.…”

Section: Introductionmentioning

confidence: 99%

Evolution Process of Liquefied Natural Gas from Stratification to Rollover in Tanks of Coastal Engineering with the Influence of Baffle Structure

Wang

Han

Liu

et al. 2021

JMSE

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During the storage process, liquefied natural gas (LNG) may undergo severe evaporation, stratification, and rollover in large storage tanks due to heat leakage, aging, or charging, causing major safety risks. Therefore, this article theoretically analyzes the causes and inducing factors of the LNG stratification and rollover phenomenon in the storage tank of coastal engineering. The computational fluid dynamics was used to establish a numerical model for the heat and mass transfer of LNG multicomponent materials in the imaginary layered interface of the storage tank, and the evolution process of LNG from spontaneous stratification to rollover was simulated. The accuracy of the mathematical model is verified by comparing numerical results with experimental data from open literature. The effects of the density difference between upper and lower layers, layering parameters, heat leakage parameters, and the baffles structure on the rollover process were studied. The effects of the interfacial surface variations are not included in this study. The results show that different baffle structures will form different boundary velocity fields, which will only affect the severity of the rollover, not the occurrence time. The larger the layering density difference, the earlier the rollover occurs. Under current conditions, the baffle structure that has the best suppression of rollover and the minimum boundary velocity is at 0.5 m above the stratified interface with the installation of the baffle at 5 degrees.

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Numerical study of pressure build-up in vertical tanks for cryogenic flammables storage

Cited by 18 publications

References 19 publications

Recent Advances in CFD Simulations of Multiphase Flow Processes with Phase Change

Recent Advances in CFD Simulations of Multiphase Flow Processes with Phase Change

Study on the Self-Pressurization Laws of Cryogenic Liquid Krypton Tank for the Electric Propulsion System

Evolution Process of Liquefied Natural Gas from Stratification to Rollover in Tanks of Coastal Engineering with the Influence of Baffle Structure

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