Linking mean pore velocity and dispersivity to pore velocity distribution by advection–dispersion and stream tube modeling
Sign Up to like & getrecommendations! Published in 2020 at "Environmental Fluid Mechanics"
DOI: 10.1007/s10652-020-09757-3
Abstract: A large set of experimental solute tracer breakthrough data (corresponding to more than 350 individual tracer breakthrough curves) in eight granular filter materials, were used to investigate the links between solute dispersivity and the shape… read more here.
Keywords: stream tube; velocity; pore velocity; dispersivity ... See more keywords
Flow transiency on analytical modeling of subsurface solute transport
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DOI: 10.1007/s11356-020-09628-w
Abstract: Groundwater flow velocity and dispersivity might be temporally or spatially variable rather than constant. In this paper, linearly-asymptotically or exponentially distance-dependent dispersivities and temporally exponential flow velocity were coupled to the conventional advection-dispersion equation. The… read more here.
Keywords: solute transport; velocity; flow velocity; dispersivity ... See more keywords
Analytical solution for solute transport from a pulse point source along a medium having concave/convex spatial dispersivity within fractal and Euclidean framework
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Earth System Science"
DOI: 10.1007/s12040-019-1231-5
Abstract: In the present study, analytical solutions of the advection dispersion equation (ADE) with spatially dependent concave and convex dispersivity are obtained within the fractal and the Euclidean frameworks by using the extended Fourier series method.… read more here.
Keywords: framework; source; dispersivity; fractal euclidean ... See more keywords
A Critical Analysis of Transverse Dispersivity Field Data.
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DOI: 10.1111/gwat.12838
Abstract: Transverse dispersion, or tracer spreading orthogonal to the mean flow direction, which is relevant e.g, for quantifying bio-degradation of contaminant plumes or mixing of reactive solutes, has been studied in the literature less than the… read more here.
Keywords: field; analysis; dispersivity; transverse dispersivity ... See more keywords
Experimental Research on the Thresholds of Scale-Dependent Dispersivity of Solute Transport
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DOI: 10.2113/2021/7998907
Abstract: The conventional advection-dispersion equation (ADE) has been widely used to describe the solute transport in porous media. However, it cannot interpret the phenomena of the early arrival and long tailing in breakthrough curves (BTCs). In… read more here.
Keywords: solute transport; dependent dispersivity; dispersivity; scale dependent ... See more keywords