TERMIUM Plus^®

Fiche 1,  Justifications,  Anglais

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The primary surface tension-driven force in a float zone.  2, fiche 1, Anglais, - Marangoni%20convection

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Thermal gradients along the free surface of the float zone drive the convention.  2, fiche 1, Anglais, - Marangoni%20convection

Fiche 1,  Justifications,  Français

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Convection induite par des variations de la tension superficielle.  2, fiche 1, Français, - convection%20de%20Marangoni

Fiche 1,  Justifications,  Espagnol

Fiche 2,  Justifications,  Anglais

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Usually, Marangoni convection is obscured by density-driven convective flows. Limited experience during space experiments indicates that above a critical Marangoni number(ratio of surface tension force to viscous force), the flow becomes unsteady and temperature fluctuations in the melt are observed. In addition, a detailesd series of ground and low-gravity experiments have demonstrated that striations due to Marangoni convection are produced in float-zone grown silicon.  2, fiche 2, Anglais, - Marangoni%20number

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Fiche 3,  Justifications,  Anglais

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The Fluids Physics Experiment Facility(FPEF) [is] intended to support fluid physics experiments involving phenomena such as Marangoni convection, bubble generation, heat transfer, liquid wettability, combustion and bubble behavior in a moderate temperature environment. The FPEF is currently scheduled to share rack space with the Solution/Protein Crystal Growth Facility and the Image Processing Unit.  3, fiche 3, Anglais, - fluid%20physics%20experiment%20facility

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fluid physics experiment facility; FPEF: term and abbreviation officially approved by the International Space Station official approval Group (ISSOAG).  4, fiche 3, Anglais, - fluid%20physics%20experiment%20facility

Fiche 3,  Justifications,  Français

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La contribution de l'ESA comprenait une installation de physique des fluides, dans laquelle prenaient place quatre expériences; l'installation Biopan, qui en accueillait neuf; la nouvelle version de l'unité de soutien de téléscience, que devaient utiliser FluidPac et le four allemand AGAT; six expériences autonomes (dont trois mises au point par des étudiants); les dernières météorites artificielles de l'expérience Stone; et enfin l'expérience «Coefficient de Soret pour l'exploration pétrolière».  3, fiche 3, Français, - module%20d%27exp%C3%A9rimentation%20en%20physique%20des%20fluides

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module d'expérimentation en physique des fluides; FPEF : terme et abréviation uniformisés par le Groupe de travail de la terminologie de la Station spatiale internationale (GTTSSI).  1, fiche 3, Français, - module%20d%27exp%C3%A9rimentation%20en%20physique%20des%20fluides

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Fiche 4,  Justifications,  Anglais

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Steady Gradient Mode. During steady gradient mode, specimens are subject to temperature gradients along the longitudinal axis. A constant gradient is maintained throughout the duration of the experiment. Experiments, including Marangoni convection, diffusion in metals and alloys, Soret transport in liquid diffusion, liquid film migration, and liquid phase sintering in a gradient would all be performed under steady gradient conditions.  1, fiche 4, Anglais, - Soret%20transport%20in%20liquid%20diffusion

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Compare with "Soret effect" (q.v.), which is defined as the diffusion of material in solution due to a temperature gradient.  2, fiche 4, Anglais, - Soret%20transport%20in%20liquid%20diffusion

Fiche 4,  Justifications,  Français

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«Soret transport» peut être traduit par «transport avec effet Soret», «transport par thermodiffusion» ou encore «transport thermodiffusif». L'effet Soret, ou thermodiffusion est le transport d'une ou de plusieurs espèces chimiques en solution liquide (à noter que cet effet existe également dans les gaz et même les solides), sous l'influence d'un gradient de température. La diffusion pure, quant à elle, existe aussi en l'absence de gradient de température. [Renseignements obtenus du service de chimie physique de l'Université libre de Bruxelles.]  1, fiche 4, Français, - transport%20avec%20effet%20Soret%20en%20solution%20liquide

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Fiche 5,  Justifications,  Anglais

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Typical experiments for the Fluid Science Modules are experiments dealing with Marangoni convection or critical point phenomena. For example... Thermocapillary drop motion :... The following process was automated : creation of a linear thermal gradient by heating one wall of the cell and cooling the opposite one; injection of a series of drops in the cell. The drops were from 1 mm to 4 mm in diameter. The motion of the drops was filmed by a video-camera and observed and recorded in real time on the ground.  2, fiche 5, Anglais, - thermocapillary%20drop%20motion

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