Study of dispersion by NMR: comparison between NMR measurements and stochastic simulation - Université de Lorraine Accéder directement au contenu
Article Dans Une Revue Diffusion Fundamentals Année : 2013

Study of dispersion by NMR: comparison between NMR measurements and stochastic simulation

Résumé

Dispersion remains, today, a highly topical subject. Our group has been interested in characterizing this phenomenon by pulsed-field-gradient NMR technique. Direct measurement of the dispersion coefficient can be done with a Pulsed Gradient Spin Echo (PGSE) sequence by assuming that the asymptotic regime is reached. In unsteady state, the propagator formalism is used. To better understand these measurements, the NMR experiment is modeled using a stochastic simulation (random walks) and compared with experimental results. The comparison is made for the simple case of Poiseuille flow in a circular tube (Taylor- Aris dispersion).
Fichier principal
Vignette du fichier
diff_fund_18(2013)11(1).pdf (712.14 Ko) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte
Loading...

Dates et versions

hal-01431404 , version 1 (03-03-2017)

Identifiants

  • HAL Id : hal-01431404 , version 1

Citer

Maude Ferrari, J.-P. Mérel, Sébastien Leclerc, Christian Moyne, Didier Stemmelen. Study of dispersion by NMR: comparison between NMR measurements and stochastic simulation. Diffusion Fundamentals, 2013, 18 (11), 4 p. ⟨hal-01431404⟩
80 Consultations
85 Téléchargements

Partager

Gmail Facebook X LinkedIn More