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advection
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Advection
In chemistry, engineering and earth sciences, advection is a transport mechanism of a substance or conserved property by a fluid due to the fluid's bulk motion. An example of advection is the transport of pollutants or silt in a river by bulk water flow downstream. Another commonly advected quantity is energy or enthalpy. Here the fluid may be any material that contains thermal energy, such as water or air. In general, any substance or conserved, extensive quantity can be advected by a fluid that can hold or contain the quantity or substance.
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Advektion
Advektion (von lat. advehi = heranbewegen) bezeichnet allgemein das Heranführen von Dingen.
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Advection
L'advection est le transport d'une quantité scalaire conservée par un champ vectoriel. Un bon exemple est le transport de matière polluante par le flux d'une rivière. En météorologie et en océanographie, l'advection se réfère surtout au transport horizontal de certaines propriétés par les fluides considérés, dont le transport par le vent ou les courants : advection de vapeur d'eau, de chaleur, de salinité, etc.
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Adwekcja
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Уравнение переноса
уравнение переноса - уравнение в частных производных, описывающее перенос сохраняющейся физической величины в поле скоростей.
уравнение переноса имеет вид:
. В этом случае уравнение принимает вид:
В одномерной постановке имеет вид:
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