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- Stefan_flow abstract "Stefan flow, occasionally called Stefan's flow, is a transport phenomenon concerning the movement of a chemical species by a flowing fluid (typically in the gas phase) that is induced to flow by the production or removal of the species at an interface. Any process that adds the species of interest to or removes it from the flowing fluid may cause Stefan flow, but the most common processes include evaporation, condensation, chemical reaction, sublimation, ablation, adsorption, absorption, and desorption. It was named after the Slovene physicist, mathematician, and poet Joseph Stefan for his early work on calculating evaporation rates.Stefan flow is distinct from diffusion as described by Fick's law, but diffusion almost always also occurs in multi-species systems that are experiencing Stefan flow. In systems undergoing one of the species addition or removal processes mentioned previously, the addition or removal generates a mean flow in the flowing fluid as the fluid next to the interface is displaced by the production or removal of additional fluid by the processes occurring at the interface. The transport of the species by this mean flow is the Stefan flow. When concentration gradients of the species are also present, diffusion transports the species relative to the mean flow. The total transport rate of the species is then given by a summation of the Stefan flow and diffusive contributions.An example of Stefan flow occurs when a droplet of liquid evaporates in air. In this case, the vapor/air mixture surrounding the droplet is the flowing fluid, and liquid/vapor boundary of the droplet is the interface. As heat is absorbed by the droplet from the environment, some of the liquid evaporates into vapor at the surface of the droplet, and flows away from the droplet as it is displaced by additional vapor evaporating from the droplet. This process causes the flowing medium to move away from the droplet at some mean speed that is dependent on the evaporation rate and other factors such as droplet size and composition. In addition to this mean flow, a concentration gradient must exist in the neighborhood of the droplet (assuming an isolated droplet) since the flowing medium is mostly air far from the droplet and mostly vapor near the droplet. This gradient causes Fickian diffusion that transports the vapor away from the droplet and the air towards it, with respect to the mean flow. Thus, in the frame of the droplet, the flow of vapor away from the droplet is faster than for pure Stefan flow, since diffusion is working in the same direction as the mean flow. However, the flow of air away from the droplet is slower than the pure Stefan flow, since diffusion is working to transport air back towards the droplet against the Stefan flow. Such flow from evaporating droplets is important in understanding the combustion of liquid fuels such as diesel in internal combustion engines, and in the design of such engines. Stefan flow from evaporating droplets and subliming ice particles also plays prominently in meteorology as it influences the formation and dispersion of clouds and precipitation.".
- Stefan_flow wikiPageID "7133995".
- Stefan_flow wikiPageLength "3881".
- Stefan_flow wikiPageOutDegree "40".
- Stefan_flow wikiPageRevisionID "623544602".
- Stefan_flow wikiPageWikiLink Ablation.
- Stefan_flow wikiPageWikiLink Absorption_(chemistry).
- Stefan_flow wikiPageWikiLink Adsorption.
- Stefan_flow wikiPageWikiLink Category:Flow_regimes.
- Stefan_flow wikiPageWikiLink Category:Transport_phenomena.
- Stefan_flow wikiPageWikiLink Chemical_reaction.
- Stefan_flow wikiPageWikiLink Chemical_species.
- Stefan_flow wikiPageWikiLink Cloud.
- Stefan_flow wikiPageWikiLink Clouds.
- Stefan_flow wikiPageWikiLink Combustion.
- Stefan_flow wikiPageWikiLink Concentration.
- Stefan_flow wikiPageWikiLink Condensation.
- Stefan_flow wikiPageWikiLink Desorption.
- Stefan_flow wikiPageWikiLink Diesel_fuel.
- Stefan_flow wikiPageWikiLink Diffusion.
- Stefan_flow wikiPageWikiLink Drop_(liquid).
- Stefan_flow wikiPageWikiLink Droplet.
- Stefan_flow wikiPageWikiLink Environment_(systems).
- Stefan_flow wikiPageWikiLink Evaporation.
- Stefan_flow wikiPageWikiLink Ficks_law.
- Stefan_flow wikiPageWikiLink Ficks_laws_of_diffusion.
- Stefan_flow wikiPageWikiLink Fluid.
- Stefan_flow wikiPageWikiLink Fluid_dynamics.
- Stefan_flow wikiPageWikiLink Frame_of_reference.
- Stefan_flow wikiPageWikiLink Gas_phase.
- Stefan_flow wikiPageWikiLink Gradient.
- Stefan_flow wikiPageWikiLink Heat.
- Stefan_flow wikiPageWikiLink Interface_(chemistry).
- Stefan_flow wikiPageWikiLink Internal_combustion_engine.
- Stefan_flow wikiPageWikiLink Joseph_Stefan.
- Stefan_flow wikiPageWikiLink Liquid.
- Stefan_flow wikiPageWikiLink Liquid_fuel.
- Stefan_flow wikiPageWikiLink Mathematician.
- Stefan_flow wikiPageWikiLink Mean.
- Stefan_flow wikiPageWikiLink Meteorology.
- Stefan_flow wikiPageWikiLink Mixture.
- Stefan_flow wikiPageWikiLink Phase_(matter).
- Stefan_flow wikiPageWikiLink Physicist.
- Stefan_flow wikiPageWikiLink Poet.
- Stefan_flow wikiPageWikiLink Precipitation.
- Stefan_flow wikiPageWikiLink Precipitation_(meteorology).
- Stefan_flow wikiPageWikiLink Slovenes.
- Stefan_flow wikiPageWikiLink Sublimation_(chemistry).
- Stefan_flow wikiPageWikiLink Sublimation_(phase_transition).
- Stefan_flow wikiPageWikiLink Transport_phenomena.
- Stefan_flow wikiPageWikiLink Transport_phenomenon.
- Stefan_flow wikiPageWikiLink Vapor.
- Stefan_flow wikiPageWikiLinkText "Stefan flow".
- Stefan_flow hasPhotoCollection Stefan_flow.
- Stefan_flow wikiPageUsesTemplate Template:Reflist.
- Stefan_flow subject Category:Flow_regimes.
- Stefan_flow subject Category:Transport_phenomena.
- Stefan_flow hypernym Phenomenon.
- Stefan_flow type Disease.
- Stefan_flow type Discipline.
- Stefan_flow type Dynamic.
- Stefan_flow comment "Stefan flow, occasionally called Stefan's flow, is a transport phenomenon concerning the movement of a chemical species by a flowing fluid (typically in the gas phase) that is induced to flow by the production or removal of the species at an interface.".
- Stefan_flow label "Stefan flow".
- Stefan_flow sameAs m.0h5z5j.
- Stefan_flow sameAs Curgere_Stefan.
- Stefan_flow sameAs Stefanov_tok.
- Stefan_flow sameAs Q7606342.
- Stefan_flow sameAs Q7606342.
- Stefan_flow wasDerivedFrom Stefan_flow?oldid=623544602.
- Stefan_flow isPrimaryTopicOf Stefan_flow.