NUMERICAL MODELING OF EFLUENT DISPERSION IN RIVERS WITH DIFFERENT LONGITUDINAL DIFFUSION COEFFICIENTS

2016 ◽  
Author(s):  
Almir Guilherme Siqueira Lopes Ritta ◽  
Roger Matsumoto Moreira
Keyword(s):  
Numerical Modeling ◽  
Diffusion Coefficients ◽  
Longitudinal Diffusion

scholarly journals Anomalous Anisotropic Diffusion of Electron Swarms in AC Electric Fields

1995 ◽  
Vol 48 (6) ◽  
pp. 925 ◽  
Author(s):  
RD White ◽  
RE Robson ◽  
KF Ness
Keyword(s):  
Electric Fields ◽  
Diffusion Coefficients ◽  
Anisotropic Diffusion ◽  
Time Varying ◽  
Longitudinal Diffusion ◽  
Temporal Behaviour ◽  
Ac Electric Fields ◽  
Wide Range ◽  
First Time ◽  
And Diffusion

A time-dependent multi-term solution of the Boltzmann equation is used to calculate the drift and diffusion coefficients of electron swarms in gases under the influence of a time varying electric field. Two model gases are considered and for a.c. electric fields results are presented for a wide range of applied frequencies. Of particular interest is the anomalous temporal behaviour of the longitudinal diffusion coefficient, which is discussed here for the first time.

Mobilities and longitudinal diffusion coefficients of K+ ions in argon gas

1973 ◽  
Vol 58 (9) ◽  
pp. 3652-3655 ◽  
Author(s):  
D. R. James ◽  
E. Graham ◽  
G. M. Thomson ◽  
I. R. Gatland ◽  
E. W. McDaniel
Keyword(s):  
Diffusion Coefficients ◽  
Longitudinal Diffusion ◽  
Argon Gas

Longitudinal diffusion coefficients of Tl+ in He, Ne, Ar, and O2

1988 ◽  
Vol 88 (7) ◽  
pp. 4551-4551 ◽  
Author(s):  
R. D. Chelf ◽  
F. B. Holleman ◽  
M. G. Thackston ◽  
E. W. McDaniel
Keyword(s):  
Diffusion Coefficients ◽  
Longitudinal Diffusion
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