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- Constrictivity abstract "Constrictivity is a dimensionless parameter used to describe transport processes (often molecular diffusion) in porous media.Constrictivity is viewed to depend on the ratio of the diameter of the diffusing particle to the pore diameter. The value of constrictivity is always less than 1. The constrictivity is defined not for a single pore, but as the parameter of the entire pore space considered.The resistance to transport in porous media increases because the viscosity of the fluid (which fills the pores) increases in the vicinity of the pore walls (Renkin effect; see also electroviscous effects). This effect is important in very narrow pores and in pore narrowing their diameter to the same size as the diameter of the diffusing particles. Constrictivity must be distinguished from the effects of Knudsen diffusion. Knudsen diffusion occurs when the particle interacts with the pore walls more than it does with other particles due to the large free path and narrow pores. Constrictivity, on the other hand, depends on the influence of the pore walls on the fluid filling the pores.There are a number of empirical formulas used to estimate the value of constrictivity. For simple pore geometries, constrictivity can be inferred from the geometry of the porous media. In practice, the constrictivity together with the porosity and tortuosity are often used in models as purely empirical parameters to establish the effective diffusivities in porous media.".
- Constrictivity wikiPageID "21045882".
- Constrictivity wikiPageRevisionID "543126131".
- Constrictivity hasPhotoCollection Constrictivity.
- Constrictivity subject Category:Hydrogeology.
- Constrictivity subject Category:Porous_media.
- Constrictivity subject Category:Transport_phenomena.
- Constrictivity type Abstraction100002137.
- Constrictivity type Company108058098.
- Constrictivity type Group100031264.
- Constrictivity type Institution108053576.
- Constrictivity type Organization108008335.
- Constrictivity type PorousMedia.
- Constrictivity type SocialGroup107950920.
- Constrictivity type YagoLegalActor.
- Constrictivity type YagoLegalActorGeo.
- Constrictivity type YagoPermanentlyLocatedEntity.
- Constrictivity comment "Constrictivity is a dimensionless parameter used to describe transport processes (often molecular diffusion) in porous media.Constrictivity is viewed to depend on the ratio of the diameter of the diffusing particle to the pore diameter. The value of constrictivity is always less than 1.".
- Constrictivity label "Constrictividade".
- Constrictivity label "Constrictivity".
- Constrictivity label "Konstriktivität".
- Constrictivity label "阻塞率".
- Constrictivity sameAs Konstriktivität.
- Constrictivity sameAs Constrictividade.
- Constrictivity sameAs m.059_zw8.
- Constrictivity sameAs Q1782978.
- Constrictivity sameAs Q1782978.
- Constrictivity sameAs Constrictivity.
- Constrictivity wasDerivedFrom Constrictivity?oldid=543126131.
- Constrictivity isPrimaryTopicOf Constrictivity.