The Consequences of Fractal Scaling in Heterogeneous Soils and Porous Media

2015 ◽  
pp. 109-122 ◽  
Author(s):  
Scott W. Tyler ◽  
Stephen W. Wheatcraft
Keyword(s):  
Porous Media ◽  
Fractal Scaling ◽  
Heterogeneous Soils

scholarly journals An experimental study on the determination of dispersion coefficient in layered soils

2021 ◽  
Author(s):  
Hamed Mahdipanah ◽  
Askari Tashakori ◽  
Samad Emamgholizadeh ◽  
Eisa Maroufpoor
Keyword(s):  
Porous Media ◽  
Flow Velocity ◽  
Sampling Method ◽  
Travel Distance ◽  
Coarse Grained ◽  
Contaminant Concentration ◽  
Fine Grained ◽  
Sodium Chloride Solutions ◽  
Heterogeneous Soils ◽  
Homogeneous Soil

Abstract Dispersivity is a measurable parameter in soil porous media that is used for studying the transport of contaminants to groundwater. The value of this parameter depends on various factors, including the kind of porous media (homogeneous or heterogeneous), flow velocity, initial contaminant concentration, travel distance, and sampling method. A physical model with dimensions of 0.10 m in width, 0.80 m in height, and 1.10 m in length was constructed to investigate the effects of these parameters on the dispersivity value. The stratified soil consisted of three 20-cm-thick layers containing fine-grained, medium-grained, and coarse-grained soil. Sodium chloride solutions with electrical conductivity values of 10, 14, and 19 dS/m were used as the contaminants. Flow was forced through the layered heterogeneous soils at three discharge velocities of 17.58, 22.02, and 26.18 × 10−5 m/s. The point and mixed sampling methods were used. The results indicated that the soil dispersivity values in the layered heterogeneous soils and homogeneous soil were influenced by contaminant concentration, flow velocity, and travel distance. Moreover, the dispersivity values obtained by point sampling were lower than those obtained using the mixed sampling method, and the mean dispersivity value in the layered heterogeneous soils was lower than that of the homogeneous soil.

The origin and loss of fractal scaling in simulated soil aggregates

1997 ◽  
Vol 48 (4) ◽  
pp. 643-650 ◽  
Author(s):  
J. W. CRAWFORD ◽  
S. VERRALL ◽  
I. M. YOUNG
Keyword(s):  
Soil Aggregates ◽  
Fractal Scaling

Physical incorporation of particles in a porous media: a path to a smart wood

2016 ◽  
Vol 74 (2) ◽  
pp. 24607 ◽  
Author(s):  
Azza Zerriaa ◽  
Mohammed El Ganaoui ◽  
Christine Gerardin ◽  
Abdel Tazibt ◽  
Slimane Gabsi
Keyword(s):  
Porous Media
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