Stabilisation of condensate flow from curvilinear surfaces by means of porous media for space applications

Barakhovskaia, Ella; Glushchuk, Andrey; Queeckers, Patrick; Iorio, Carlo Saverio

doi:10.1016/j.expthermflusci.2020.110283

Cited by 7 publications

(5 citation statements)

References 19 publications

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“…A porous media is placed around the fin to trap the fluid and dump any liquid fluctuations during parabolic manoeuvres of the airplane. A detailed description of the porous media roles in the condensation experiment is given in [4]. An enhanced shadow optical system consists of a collimated light source and an image projection system to measure the film thickness.…”

Section: Methodsmentioning

confidence: 99%

Characterization of Wick Evaporators through the Behavior of the Specially Designed Condenser

Barakhovskaia¹,

Glushchuk²,

Marchuk³

et al. 2022

International Conference on Fluid Flow, Heat and Mass Transfer

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New concept of the experimental investigation has been proposed and successfully realized during the 73rd ESA parabolic flight campaign 2020. The evaporators' behavior is analyzed by evaluating the liquid level inside and by investigating the external condensation on the designed condenser's surface. Three evaporators made with different techniques have been tested. Analysis of the experimental data shows qualitative differences in considered evaporators. Aluminium foam provided uniform distribution of liquid close to its external surface. The evaporator with 3D-printed wick had a non-uniform distribution of liquid inside. Sintered brass wick showed the longest stabilization time.

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Section: Methodsmentioning

confidence: 99%

Characterization of Wick Evaporators through the Behavior of the Specially Designed Condenser

Barakhovskaia¹,

Glushchuk²,

Marchuk³

et al. 2022

International Conference on Fluid Flow, Heat and Mass Transfer

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“…These substrates were chosen based on their unique properties, which influence the behavior of water molecules during the condensation process. The selection was informed by a comprehensive literature review, identifying these surfaces as promising candidates for enhancing water recovery rates [25][26][27]. However, despite various proposed techniques, there is a lack of available studies on water extraction and recuperation under reduced gravity conditions.…”

Section: Of 18mentioning

confidence: 99%

Water Recuperation from Regolith at Martian, Lunar & Micro-gravity during Parabolic Flight

Farina,

Machrafi,

Queeckers

et al. 2024

Preprint

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Recent discoveries of potential ice particles and ice-cemented regolith on celestial bodies like the Moon and Mars have ushered in new opportunities for developing technologies to extract water, facilitating future space missions and activities on these celestial surfaces. This study delves into the potential for water extraction from regolith through an experiment designed to test water recuperation from regolith simulant under varying gravitational conditions. The resultant water vapor extracted from the regolith is re-condensed on a substrate surface and collected in liquid form. Three types of substrates, hydrophobic, hydrophilic, and grooved, are explored. The system’s functionality was assessed during a parabolic flight campaign simulating three distinct gravity levels: microgravity, lunar gravity, and Martian gravity. Our findings reveal that the hydrophobic surface demonstrates the highest efficiency due to drop-wise condensation, and lower gravity levels result in increased water condensation on the substrates. This experiment aims to provide insights into in-situ water recovery, which is pivotal for establishing economically-sustainable water supplies for future missions.

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“…In a paper (Barakhovskaia et al 2021), the authors are presenting the experimental results of film-wise condensation over optimized curvilinear fin (Fig. 1 curve 2a) that provides maximal condensation flow.…”

Section: Investigation Under Microgravity Conditionsmentioning

confidence: 99%

“…A porous media placed around the fin traps the fluid and dumps any liquid fluctuations during the airplane's parabolic maneuvers. A detailed description of the porous media roles in condensation experiment is given in (Barakhovskaia et al 2021). This approach partially solved liquid accumulation and instability.…”

Section: Investigation Under Microgravity Conditionsmentioning

confidence: 99%

Fin Shape Design for Stable Film-Wise Vapor Condensation in Microgravity

Barakhovskaia

Marchuk

2022

Microgravity Sci. Technol.

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Under microgravity conditions, the dynamics of a thin condensate film on a curved surface is determined by the capillary pressure gradient proportional to the mean surface curvature gradient. A one-parameter family of axisymmetric surfaces is found for which the gradient of mean curvature is constant. The dimensionless equation for rotation angle of the generatrix curve is found. There is a single generatrix curve for an axisymmetric surface for which the rotation angle at the inflexion point assumes a predetermined value. Due to the constant gradient of capillary pressure on such a surface, a stable condensate flow is ensured under microgravity conditions. A similar curve for the planar case, known as the clothoid or "Cornu spiral", is used to find the best transition curve to get the smoothest traffic on the roads. A numerical model for film-wise vapor condensation on such surface has been built. The film thickness distribution and mass flow rate of the HFE-7100 along the cooled curvilinear fin have been calculated. Calculations were done both for terrestrial gravity and microgravity. This work proposes a particular surface shape, found numerically, for conducting experiments on the pure vapor condensation under microgravity conditions in Parabolic Flight Campaigns and onboard the International Space Station.

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Stabilisation of condensate flow from curvilinear surfaces by means of porous media for space applications

Cited by 7 publications

References 19 publications

Characterization of Wick Evaporators through the Behavior of the Specially Designed Condenser

Characterization of Wick Evaporators through the Behavior of the Specially Designed Condenser

Water Recuperation from Regolith at Martian, Lunar & Micro-gravity during Parabolic Flight

Fin Shape Design for Stable Film-Wise Vapor Condensation in Microgravity

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