Impact of the solute exclusion on the bed longitudinal diffusion coefficient and particle intra-tortuosity determined by ISEC

2014 ◽  
Vol 1325 ◽  
pp. 179-185 ◽  
Author(s):  
Véronique Wernert ◽  
Renaud Bouchet ◽  
Renaud Denoyel
Keyword(s):  
Diffusion Coefficient ◽  
Longitudinal Diffusion ◽  
Solute Exclusion

Measurements of electron mobility and longitudinal diffusion coefficient in high pressure xenon doped with hydrogen

2019 ◽  
Vol 58 (3) ◽  
pp. 038001
Author(s):  
Hiroki Kusano ◽  
Mitsuhiro Miyajima ◽  
Nobuyuki Hasebe ◽  
Valery V. Dmitrenko
Keyword(s):  
High Pressure ◽  
Diffusion Coefficient ◽  
Electron Mobility ◽  
Longitudinal Diffusion

scholarly journals Unsteady solute dispersion in blood rheology with reversible phase exchange at the artery wall

2018 ◽  
Vol 7 (2) ◽  
pp. 750
Author(s):  
D S Sankar ◽  
Nurul Aini Jaafar ◽  
Yazariah Yatim
Keyword(s):  
Blood Flow ◽  
Diffusion Coefficient ◽  
Blood Rheology ◽  
Expansion Method ◽  
Casson Fluid ◽  
Longitudinal Diffusion ◽  
Flowing Fluid ◽  
Derivative Series ◽  
Flow Through ◽  
Reversible Phase

The effect of reversible phase exchange between the flowing fluid and wall tissues of arteries in the unsteady dispersion of solute in blood flow through a narrow artery is analysed mathematically, modelling the blood as Casson fluid. The resulting convective diffusion equation along with the initial and boundary conditions is solved analytically using the derivative series expansion method. The expressions for the negative asymptotic phase exchange, negative asymptotic convection, longitudinal diffusion coefficient and mean concentration are obtained. It is noted that when the solute disperses in blood flow through a narrow artery, the negative exchange coefficient, the negative convection coefficient increase and the longitudinal diffusion coefficient decreases with the increase of the Damköhler number and partition coefficient.

Density Dependence of the Longitudinal Diffusion Coefficient of Electrons in Xenon

2012 ◽  
Vol 51 (4R) ◽  
pp. 048001 ◽  
Author(s):  
Hiroki Kusano ◽  
José A. Matias-Lopes ◽  
Mitsuhiro Miyajima ◽  
Eido Shibamura ◽  
Nobuyuki Hasebe
Keyword(s):  
Diffusion Coefficient ◽  
Density Dependence ◽  
Longitudinal Diffusion

scholarly journals Drift Velocity and Longitudinal Diffusion Coefficient of Electrons in CO2?Ar Mixtures and Electron Collision Cross Sections for CO2 Molecules

1995 ◽  
Vol 48 (3) ◽  
pp. 357 ◽  
Author(s):  
Y Nakamura
Keyword(s):  
Diffusion Coefficient ◽  
Momentum Transfer ◽  
Cross Section ◽  
Drift Velocity ◽  
Cross Sections ◽  
Vibrational Excitation ◽  
Electron Collision ◽  
Longitudinal Diffusion ◽  
Excitation Cross Sections ◽  
Momentum Transfer Cross Section

The drift velocity and longitudinal diffusion coefficient of electrons in 0�2503% and 1� 97% C02-Ar mixtures were measured for 0�03 ~ E/N ~ 20 Td. The measured electron swarm parameters in the mixtures were used to derive a set of consistent vibrational excitation cross sections for the C02 molecule. Analysis of electron swarms in pure C02 using the present vibrational excitation cross sections was also carried out in order to determine a new momentum transfer cross section for the C02 molecule.

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