CFD Modeling of Phase Change and Pressure Drop during Violent Sloshing of Cryogenic Fluid in a Small-Scale Tank

Kartuzova, Olga; Kassemi, Mohammad; Umemura, Yutaka; Kinefuchi, Kiyoshi; Himeno, Takehiro

doi:10.2514/6.2020-3794

Cited by 9 publications

(1 citation statement)

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“…However, an appreciable temperature difference (up to 15 K, [12,13]) can be produced between the liquid and the ullage gas. Sloshing can thus induce additional time-varying thermal loads on the tank's wall [14]. This is especially critical in metallic alloys, which are known to suffer from crack propagation and thermal fatigue when undergoing repeated thermal cycles [15].…”

Section: Introductionmentioning

confidence: 99%

Modelling and Scaling Laws of Cryogenic Tank’s Thermal Response to Sloshing

Ahizi,

Marques,

Mendez

2023

36th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 20

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The storage of cryogenic fuels such as liquid hydrogen (LH 2 ) or liquefied natural gas (LNG) poses significant thermal and mechanical loads to the tanks that store them because of the considerable temperature gradients produced during filling operation and sloshing. This work presents a numerical investigation of the transient heat conduction within the walls of an insulated cryogenic tank undergoing sloshing. The unsteady heat conduction is analyzed by modeling the sloshing as a spatially distributed and time-varying boundary condition on the inner side of the tank. The scaling laws of the problem are analyzed by combining the characteristic time scale of heat conduction with the characteristic time scales of the sloshing. The modulation of sloshinginduced thermal fluctuations is then analyzed across the wall thickness and in the circumferential direction. The resulting dimensionless modulation map allows for analyzing the tank's thermal response for different designs.

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