Numerical investigation of the operating process of the liquid hydrogen tank under gaseous hydrogen pressurization

Li, Jiachao; Liang, Gengchiau; Zhu, Pingping; Wang, Xi

doi:10.1016/j.ast.2019.105327

Cited by 13 publications

(3 citation statements)

References 29 publications

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Section: Introductionmentioning

confidence: 99%

“…The gas-liquid two-phase flow exists in many industrial applications, including liquid fuel rocket propellant tanks [1,2]. In these tanks, the two gas and liquid phases are next to each other until the end of the engine operation [2,3]. In fact, a gas pressure feeding system is required to pressurize the fuel and oxidizer in propellant tanks to transfer them with the required flow and pressure to the combustion chamber [1,2].…”

Section: Introductionmentioning

confidence: 99%

“…In these tanks, the two gas and liquid phases are next to each other until the end of the engine operation [2,3]. In fact, a gas pressure feeding system is required to pressurize the fuel and oxidizer in propellant tanks to transfer them with the required flow and pressure to the combustion chamber [1,2]. The outflow of liquid propellant from the tanks is associated with forming vortices [4].…”

Section: Introductionmentioning

confidence: 99%

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Numerical analysis of transient vortex formation at the outlet of a tank containing gas-liquid phases

Mohseni

Domfeh

2023

Preprint

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One of the basic phenomena when a liquid leaves a tank, is the formation of vortices. This phenomenon can significantly affect the remaining liquid mass in the tank and the penetration of air and bubbles into the system. As a result, system performance may be disrupted. This study numerically investigates the influence of parameters such as discharge time, gas pressure, liquid depth, and angular velocity of the reference frame on the vortex characteristics. In addition, the near-wall behavior of the analytical relations proposed for the tangential velocity has been revised based on the boundary layer theory. The "volume of fluid" model (VOF) and the SST k-ω turbulence model have been used to solve the two-phase turbulent flow. The results show that increasing the gas pressure from 1 to 5 bar and its direct impact on the liquid surface significantly accelerates the formation of the vortex and the critical height. This phenomenon causes, after the starting of liquid discharge, the air core to reach the inlet port of the outlet pipe about 7 seconds earlier. As a result, much more liquid mass remains in the tank. Also, the increase in the angular velocity of the reference frame from 0.1 to 1 rad/s causes the critical height to be formed much sooner and the remaining liquid mass to increase by 32 kg. Furthermore, the amount and the variations of turbulent viscosity significantly differ from the semi-empirical constant values, limiting their use to particular streams.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Numerical analysis of transient vortex formation at the outlet of a tank containing gas-liquid phases

Mohseni

Domfeh

2023

Preprint

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Investigation on Thermal Behavior During Pressurization Discharge of Liquid Oxygen Under Different Acceleration Levels

Liu

Yin

Liu

et al. 2022

Microgravity Sci. Technol.

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Cryogenic pressurization discharge involves on complex heat exchange and fluid flow issues, and the related thermal physical performance should be comprehensively investigated. In this study, a two-dimensional axisymmetric numerical model is adopted to research the outflow characteristic from a cylindrical liquid oxygen storage tank with the gas injection. The VOF method is utilized to predict the pressurization discharge with 360 K high-temperature gaseous oxygen as the pressurant gas. Validated against the liquid hydrogen discharge experiments, the numerical model is turned out to be proper and acceptable with the calculation errors limited within 20%. On the basis of the numerical model, effect of the flight acceleration level on the tank pressurization and liquid outflow performance are numerically simulated and analyzed, with the gas injection rate of 0.18 kg/s and the liquid outflow rate of 36.0 kg/s. Some valuable conclusions are obtained finally. The present study is significant to the safety flight of launch vehicle and may supply some technical supports for the design of cryogenic propellant system.

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Interfacial mass and energy transport during steady-state evaporation in liquid oxygen storage tanks

Zuo

Wang²,

Huang

2022

Applied Energy

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Numerical investigation of the operating process of the liquid hydrogen tank under gaseous hydrogen pressurization

Cited by 13 publications

References 29 publications

Numerical analysis of transient vortex formation at the outlet of a tank containing gas-liquid phases

Numerical analysis of transient vortex formation at the outlet of a tank containing gas-liquid phases

Investigation on Thermal Behavior During Pressurization Discharge of Liquid Oxygen Under Different Acceleration Levels

Interfacial mass and energy transport during steady-state evaporation in liquid oxygen storage tanks

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