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COEFFICIENT DIFFUSION [1 record]
Record 1 - internal organization data 2001-10-22
Record 1, English
Record 1, Subject field(s)
- Metrology and Units of Measure
- Fluid Mechanics and Hydraulics (Physics)
Record 1, Main entry term, English
- diffusion coefficient
1, record 1, English, diffusion%20coefficient
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
- coefficient of diffusion 2, record 1, English, coefficient%20of%20diffusion
correct
- diffusivity 3, record 1, English, diffusivity
correct
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
"Diffusivity": the rate at which molecules of a material diffuse through still air or water. 4, record 1, English, - diffusion%20coefficient
Record number: 1, Textual support number: 2 DEF
A factor of proportionality representing the amount of substance in grams diffusing across an area of one square centimeter through a unit concentration gradient in one second of time. 5, record 1, English, - diffusion%20coefficient
Record number: 1, Textual support number: 1 CONT
... the rate of diffusion of particles [in a liquid or gas] ... may be written as J = -D (delta x/delta c), where J is the flux in question, D the diffusion coefficient or diffusivity, and delta x/delta c is the gradient of concentration. 6, record 1, English, - diffusion%20coefficient
Record 1, French
Record 1, Domaine(s)
- Unités de mesure et métrologie
- Mécanique des fluides et hydraulique (Physique)
Record 1, Main entry term, French
- coefficient de diffusion
1, record 1, French, coefficient%20de%20diffusion
correct, masculine noun, standardized
Record 1, Abbreviations, French
Record 1, Synonyms, French
- diffusivité 2, record 1, French, diffusivit%C3%A9
correct, feminine noun
Record 1, Textual support, French
Record number: 1, Textual support number: 1 CONT
[...] la quantité d'un constituant i d'un mélange diffusé dans la direction z à travers une portion de plan de surface unitaire perpendiculaire à la direction de diffusion est proportionnelle au gradient de concentration dans cette direction: J = -D (delta C/delta z), où J représente le flux de diffusion dans la direction z (mole/cm carré . s), C la concentration du constituant i (mole/cm cube) et D un coefficient de proportionnalité appelé coefficient de diffusion, dont la valeur, pour la plupart des gaz, est comprise dans l'intervalle 0,1 à 1 cm carré/s. 3, record 1, French, - coefficient%20de%20diffusion
Record number: 1, Textual support number: 1 OBS
Le terme "coefficient de diffusion" est normalisé par l'AFNOR. 4, record 1, French, - coefficient%20de%20diffusion
Record 1, Spanish
Record 1, Campo(s) temático(s)
- Metrología y unidades de medida
- Mecánica de fluidos e hidráulica (Física)
Record 1, Main entry term, Spanish
- coeficiente de difusión
1, record 1, Spanish, coeficiente%20de%20difusi%C3%B3n
correct, masculine noun
Record 1, Abbreviations, Spanish
Record 1, Synonyms, Spanish
- difusividad 2, record 1, Spanish, difusividad
feminine noun
Record 1, Textual support, Spanish
Record number: 1, Textual support number: 1 DEF
Peso de un material, en gramos, difundido a través de un área de un centímetro cuadrado en un segundo en un gradiente de concentración unidad. 2, record 1, Spanish, - coeficiente%20de%20difusi%C3%B3n
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