Measured states of Sloshsat FLEVO

Vreeburg, J.P.B.

doi:10.2514/6.iac-05-c1.2.09

Cited by 25 publications

(2 citation statements)

References 6 publications

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“…1. with a volume of 86.9 VL  , is contained in satellite Sloshsat FLE-VO (Vreeburg, 2005). The tank radius is 0.228m and the length of cylindrical part (the rest part of the tank except the two hemispherical ends) is equal to radius.…”

Section: Results Of 3-d Liquid Sloshing In Hemi-spherically Bottom Tankmentioning

confidence: 99%

“…However the free surface shapes were not considered and sloshing analysis must be modified to account for distortion of free surface in different gravitational field. For the hemi-spherically bottom tank, which has been employed on Sloshsat FLEVO (Vreeburg, 2005) to study solid-liquid interaction dynamics, several relative numerical simulations were given in literature (Veldman, Gerrits, Luppes, Helder, and Vreeburg, 2007;Luppes, Helder, and Veldman, 2009). However the liquid dynamics in tank under pitching excitation have not been studied before.…”

Section: Introductionmentioning

confidence: 99%

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Numerical Simulation of Pitching Sloshing under Microgravity

Yang

Zhang

et al. 2019

JAFM

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In this paper, the fluid characteristics of pitching sloshing under microgravity condition are investigated. A numerical method by solving the Navier-Stokes equations to study three-dimensional (3-D) nonlinear liquid sloshing is developed with OpenFOAM, a Computational Fluid Dynamics (CFD) tool. The computational method is validated against existing experimental data in rectangular tank under ordinary gravitational field. However under low gravity conditions, the sloshing liquid shows seemingly chaotic behavior and a considerable volume of liquid attaches on the sidewall due to the effect of surface tension, which is verified in simulation experiment. Besides, the nonlinear liquid behaviors in hemi-spherically bottom tank are firstly studied in this paper. It is found that the wave evolution becomes divergent with the decrease of gravitational acceleration. The natural frequency reaches a constant magnitude quickly with the increase of liquid height and then increases again until the filling level exceeds 70%. Meanwhile, the liquid dynamics of forced pitching sloshing under resonant and off-resonant condition are demonstrated respectively. The numerical techniques for 3-D simulation are hopeful to provide valuable guidance for efficient liquid management in space.

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Section: Results Of 3-d Liquid Sloshing In Hemi-spherically Bottom Tankmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Pitching Sloshing under Microgravity

Yang

Zhang

et al. 2019

JAFM

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show abstract

Optimisation using smoothed particle hydrodynamics with volume-based geometry control

Hall

Rendall

Allen

2017

Struct Multidisc Optim

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This work explores how smoothed particle hydrodynamics (SPH) may be applied for fluids optimisation problems. To achieve this, a newly developed volume of solid geometric parameterisation is applied that implicitly allows large geometric changes as well as topological changes. The meshless nature of SPH has long been an advantage, but when combined with the parameterisation presented here, optimisation calculations are able to make unlimited changes in the geometry without user intervention. To demonstrate the benefits this pairing of techniques affords for free-surface problems, three model optimisations and objective functions are considered: improvement of discharge coefficient through a nozzle, maximisation of damping in a pivoting tank and minimisation of wave overtopping for a simplified coastal defence. For the wave problem, varying constraints are explored and a time-recorded particle boundary condition is applied to accelerate the optimisation process. In each of the cases the optimisation finds a significant improvement in the objective function and shows how constraint selection influences the performance of the final design.

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Attitude tracking control of flexible spacecraft with large amplitude slosh

Deng

Yue

2017

Acta Mech. Sin.

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Measured states of Sloshsat FLEVO

Cited by 25 publications

References 6 publications

Numerical Simulation of Pitching Sloshing under Microgravity

Numerical Simulation of Pitching Sloshing under Microgravity

Optimisation using smoothed particle hydrodynamics with volume-based geometry control

Attitude tracking control of flexible spacecraft with large amplitude slosh

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