Comparison Between the FLUIDICS Experiment and Direct Numerical Simulations of Fluid Sloshing in Spherical Tanks Under Microgravity Conditions

Dalmon, Alexis; Lepilliez, Mathieu; Tanguy, Sébastien; Alis, Romain; Popescu, Elena Roxana; Roumiguié, Rémi; Miquel, Thomas; Busset, Barbara; Bavestrello, Henri; Mignot, J.-M.

doi:10.1007/s12217-019-9675-4

Cited by 23 publications

(6 citation statements)

References 34 publications

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“…residual acceleration in parabolic flight is of order 5 × 10 −2 g is less. We use the FLUIDICS (Fluid Dynamics in Space) facility [18] designed by Airbus Defence and Space and by the French spatial agency the CNES (Centre National d' Études Spatiales) primarily to study the sloshing motion of liquid propellants of satellites [19,20]. A specific tank equipped with two fluid level sensors is dedicated to the study of capillary wave turbulence.…”

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confidence: 99%

Capillary wave turbulence experiments in microgravity

Berhanu¹,

Falcon²,

Michel³

et al. 2020

EPL

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Using the FLUIDICS (Fluid Dynamics in Space) experiment in the International Space Station, turbulence of capillary waves at the air-water interface is experimentally investigated in weightlessness. Capillary waves are excited in a spherical container partially filled with water and undergoing sinusoidal or random oscillations. The fluctuations of the interface, recorded with two capacitive probes are analyzed by means of the frequency power spectrum of wave elevation. For high enough forcing amplitudes, we report power-law spectra with exponents close to the prediction of weak wave turbulence theory. However, in this experiment the free-surface steepness is not small compared to 1 and thus the investigated regimes correspond to strongly nonlinear wave turbulence.

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confidence: 99%

Capillary wave turbulence experiments in microgravity

Berhanu¹,

Falcon²,

Michel³

et al. 2020

EPL

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“…Indeed, sloshing in tanks of liquid propellants rockets or satellites leads to disturbing torques that are hardly predictable and controllable. The FLUIDICS (Fluid Dynamics in Space) experiment, run on board the International Space Station (ISS), is an attempt to better understand liquid sloshing and wave turbulence phenomena (Dalmon et al 2019).…”

Section: Applications Of 0-g Environments On Earthmentioning

confidence: 99%

Experimental Characterization of Weightlessness During Glider Parabolic Flights

Caprace

Gontier

Iranmanesh³

et al. 2020

Microgravity Sci. Technol.

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Access to earthbound weightlessness is critical to many branches of applied sciences. Besides, several space systems require microgravity testing before their launch. Existing solutions (drop towers, parabolic flights, sounding rockets) offer variable durations and qualities of microgravity environment, but their cost and lead times make them unpractical for small actors such as universities or start-up companies. This leads to a growing interest for alternative microgravity platforms. Here, we study the use of gliders to perform parabolic flights at a lower cost, and we propose a systematic quantification of glider’s 0-g flight capabilities. Results of our flight test campaign show that gliders offer up to 5.5s of weightlessness, with excursions below 0.1g, and a satisfactory level of repeatability. Besides, the recordings do not suffer from the increased level of vibrations generated by piston engines, typical of light-aircraft-based alternatives. Operational considerations associated with glider parabolic flights are also discussed. Finally, we conclude that a microgravity platform based on gliders would be suitable especially for compact experiments and equipment in order to support accelerated design and development, or to produce preliminary experimental results.

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“…In addition, at each time step, the resolution of the thermal field in the solid wall and of the conservation laws in the fluid are coupled by imposing the appropriate boundary conditions at the solid/fluid interface. The solver has been previously validated by comparisons with experimental data of two phase flows in both isothermal conditions in normal gravity [38,39] and micro-gravity conditions [40,41], and with phase change, for nucleate boiling [42] and also for impacting droplets in the Leidenfrost regime [43]. Moreover, a comparison between numerical results and analytical model for droplet condensation has recently been carried out [44].…”

Section: Numerical Schemesmentioning

confidence: 99%

Direct numerical simulation of nucleate boiling in zero gravity conditions

Urbano

Tanguy

Colin

2019

International Journal of Heat and Mass Transfer

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Understanding and controlling nucleate pool boiling phenomena in zero gravity conditions is fundamental for space applications. An analytical model for the equilibrium radius reached by a bubble nucleated in sub-cooled conditions is established in this work and verified numerically. Indeed, direct numerical simulations of two phase flows conjugated with the heat conduction in the solid wall are carried out in order to verify and correct the analytical model. Fine grids, with cells size of the order of the micron, are mandatory in order to capture the subtle equilibrium between condensation and evaporation that characterises stationary conditions. This has been possible thanks to the house made solver DIVA, validated for nucleate pool boiling simulations, and that permits to carry out parallel numerical simulations. Results show that the equilibrium radius of the bubble is a function of the thermal gradient, of the Jakob numbers associated with condensation and evaporation and of the apparent contact angle. The analysis of the thermal field is carried out and an interpretation of the physical processes that characterise the equilibrium is given. In addition, useful information on the heat transfer behaviour, reported in terms of Nu numbers, completes the work.

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Comparison Between the FLUIDICS Experiment and Direct Numerical Simulations of Fluid Sloshing in Spherical Tanks Under Microgravity Conditions

Abstract: Comparison between the FLUIDICS experiment and direct numerical simulations of fluid sloshing in spherical tanks under microgravity conditions. (2019) Microgravity Science and Technology, 31 (1). 123-138.

Cited by 23 publications

References 34 publications

Capillary wave turbulence experiments in microgravity

Capillary wave turbulence experiments in microgravity

Experimental Characterization of Weightlessness During Glider Parabolic Flights

Direct numerical simulation of nucleate boiling in zero gravity conditions

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