Influence factors of the numerical model build-up on fluid sloshing

Liu, Zhan; Li, Cui

doi:10.1007/s42757-020-0099-6

Cited by 8 publications

(3 citation statements)

References 35 publications

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“…where α is the volume fraction and the subscripts l and v denote the liquid phase and vapor phase, respectively. The physical field inside the mounded tank is obtained by solving the control equations after introducing the VOF model, and the relevant control equations can be written as 19–21:

true \frac{1}{ρ_{q}} [\frac{\partial}{\partial t} (α_{q} ρ_{q}) + \nabla \cdot (α_{q} ρ_{q} {\vec{u}}_{q})] = 0

true \frac{\partial}{\partial t} (ρ \vec{u}) + \nabla \cdot (ρ \vec{u} \vec{u}) = - \nabla p + \nabla \cdot [μ (\nabla \vec{u} + \nabla {\vec{u}}^{T})] + ρ g

true \frac{\partial}{\partial t} (ρ E) + \nabla \cdot [\vec{u} (ρ E + p)] = \nabla \cdot (λ \nabla T) + S_{h}

…”

Section: Geometric Models and Numerical Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Thermal Performance Analysis of a Mounded Liquid Ethylene Storage Tank

Xin,

Wen,

Zhou

et al. 2023

Chem Eng & Technol

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A model including the tank body and the external environment is developed to investigate the temperature field of a mounded liquid ethylene storage tank system during long‐term placement. Since the external environment always changes, it is introduced by writing user‐defined functions (UDFs). The effects of external environment and structural parameters on the temperature field are analyzed to provide reference for the design of the heat tracing devices of the storage tank system. The results indicate that the increase of tank quantities substantially reduces the outer‐surface temperature of the cold insulation structure. The increase in tank spacing and thickness of the cold insulation structure weakens the interaction of adjacent tanks and raises the outer‐surface temperature of the cold insulation structure.

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true \frac{1}{ρ_{q}} [\frac{\partial}{\partial t} (α_{q} ρ_{q}) + \nabla \cdot (α_{q} ρ_{q} {\vec{u}}_{q})] = 0

true \frac{\partial}{\partial t} (ρ \vec{u}) + \nabla \cdot (ρ \vec{u} \vec{u}) = - \nabla p + \nabla \cdot [μ (\nabla \vec{u} + \nabla {\vec{u}}^{T})] + ρ g

true \frac{\partial}{\partial t} (ρ E) + \nabla \cdot [\vec{u} (ρ E + p)] = \nabla \cdot (λ \nabla T) + S_{h}

…”

Section: Geometric Models and Numerical Methodsmentioning

confidence: 99%

“…where a is the volume fraction and the subscripts l and v denote the liquid phase and vapor phase, respectively. The physical field inside the mounded tank is obtained by solving the control equations after introducing the VOF model, and the relevant control equations can be written as [19][20][21]:…”

Section: Control Equationsmentioning

confidence: 99%

Thermal Performance Analysis of a Mounded Liquid Ethylene Storage Tank

Xin,

Wen,

Zhou

et al. 2023

Chem Eng & Technol

View full text Add to dashboard Cite

show abstract

“…The renormalization group (RNG) k-ε turbulence model modifies viscosity by considering the rotating and swirling flow pattern. [21][22][23][24][25][26] Therefore, the RNG k-ε model is used in this study. The governing equations of the model are shown in Equations ( 1)-( 5): Continuity equation:…”

Section: Mathematical Methodsmentioning

confidence: 99%

Numerical simulation and structure optimization of spiral wound heat exchanger with novel spacing bars

Duan,

Zhou,

Xiao

et al. 2023

Can J Chem Eng

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Spiral wound heat exchangers are widely used in industrial production for their advantages, such as large heat transfer areas and compact structures. However, their compact design also poses significant difficulties for numerical simulation and experimental research. The spacing bar between tube bundles has an essential impact on the performance of wound tube heat exchangers. This paper presents a new type of spacing bar vertically installed on the core barrel of the spiral wound heat exchanger to enhance the comprehensive heat transfer performance. A numerical model of a new type of wrapped tube heat exchanger has been constructed, which agrees with experimental results. Under the same working conditions, the comprehensive heat transfer performance on the shell side of the spiral wound heat exchanger with new spacing bars is increased by 7.4%–10.5% compared with the traditional structure. On this basis, the influence of the new spacing bar's structural parameters on the heat exchanger's performance was studied, and the empirical correlation between the structural parameters and operating conditions of the new spacing bar and the performance of the heat exchanger was fitted. The research results have guiding significance for the design of spiral wound heat exchangers.

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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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Influence factors of the numerical model build-up on fluid sloshing

Cited by 8 publications

References 35 publications

Thermal Performance Analysis of a Mounded Liquid Ethylene Storage Tank

Thermal Performance Analysis of a Mounded Liquid Ethylene Storage Tank

Numerical simulation and structure optimization of spiral wound heat exchanger with novel spacing bars

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

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