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Carl McBride (talk | contribs) m (New page: Given and Stell \cite{JCP_1992_97_04573,PA_1994_209_0495} provided {\bf exact} OZ equations for two-phase random media based on the original work of Madden and Glandt \cite{JSP_1988_51_053...) |
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Given and Stell | Given and Stell (Refs 1 and 2) provided '''exact''' OZ equations for two-phase random media | ||
based on the original work of Madden and Glandt | based on the original work of Madden and Glandt (Refs 3 and 4). | ||
For a two-species system, for the | For a two-species system, for the <math>(s+1)</math> replicated system one has (see Eq.s 2.7 --2.11 Ref. 2): | ||
h_{mm} = c_{mm} + \rho_m c_{mm} \otimes h_{mm} + s\rho_f c_{mf} \otimes h_{mf} | :<math>h_{mm} = c_{mm} + \rho_m c_{mm} \otimes h_{mm} + s\rho_f c_{mf} \otimes h_{mf}</math> | ||
h_{mf} = c_{mf} + \rho_m c_{mm} \otimes h_{mf} + \rho_f c_{mf} \otimes h_{ff} + (s-1) \rho_f c_{mf} \otimes h_{12} | :<math>h_{mf} = c_{mf} + \rho_m c_{mm} \otimes h_{mf} + \rho_f c_{mf} \otimes h_{ff} + (s-1) \rho_f c_{mf} \otimes h_{12}</math> | ||
h_{fm} = c_{fm} + \rho_m c_{fm} \otimes h_{mm} + \rho_f c_{ff} \otimes h_{fm} + (s-1) \rho_f c_{12} \otimes h_{fm} | :<math>h_{fm} = c_{fm} + \rho_m c_{fm} \otimes h_{mm} + \rho_f c_{ff} \otimes h_{fm} + (s-1) \rho_f c_{12} \otimes h_{fm}</math> | ||
h_{ff} = c_{ff} + \rho_m c_{fm} \otimes h_{mf} + \rho_f c_{ff} \otimes h_{ff} + (s-1) \rho_f c_{12} \otimes h_{12} | :<math>h_{ff} = c_{ff} + \rho_m c_{fm} \otimes h_{mf} + \rho_f c_{ff} \otimes h_{ff} + (s-1) \rho_f c_{12} \otimes h_{12}</math> | ||
h_{12} = c_{12} + \rho_m c_{fm} \otimes h_{mf} + \rho_f c_{ff} \otimes h_{12} + | :<math>h_{12} = c_{12} + \rho_m c_{fm} \otimes h_{mf} + \rho_f c_{ff} \otimes h_{12} + \rho_f c_{12} \otimes h_{ff} + (s-2) \rho_f c_{12} \otimes h_{12} </math> | ||
In the limit of | In the limit of <math>s \rightarrow 0</math> these equations from the ROZ equations (see Eq.s 2.12 --2.16 Ref. 2): | ||
h_{mm} = c_{mm} + \rho_m c_{mm} \otimes h_{mm} | :<math>h_{mm} = c_{mm} + \rho_m c_{mm} \otimes h_{mm}</math> | ||
h_{mf} = c_{mf} + \rho_m c_{mm} \otimes h_{mf} + \rho_f c_{mf} \otimes h_{ff} - \rho_f c_{mf} \otimes h_{12} | :<math>h_{mf} = c_{mf} + \rho_m c_{mm} \otimes h_{mf} + \rho_f c_{mf} \otimes h_{ff} - \rho_f c_{mf} \otimes h_{12}</math> | ||
h_{fm} = c_{fm} + \rho_m c_{fm} \otimes h_{mm} + \rho_f c_{ff} \otimes h_{fm} - \rho_f c_{12} \otimes h_{fm} | :<math>h_{fm} = c_{fm} + \rho_m c_{fm} \otimes h_{mm} + \rho_f c_{ff} \otimes h_{fm} - \rho_f c_{12} \otimes h_{fm}</math> | ||
h_{ff} = c_{ff} + \rho_m c_{fm} \otimes h_{mf} + \rho_f c_{ff} \otimes h_{ff} - \rho_f c_{12} \otimes h_{12} | :<math>h_{ff} = c_{ff} + \rho_m c_{fm} \otimes h_{mf} + \rho_f c_{ff} \otimes h_{ff} - \rho_f c_{12} \otimes h_{12}</math> | ||
h_{12} = c_{12} + \rho_m c_{fm} \otimes h_{mf} + \rho_f c_{ff} \otimes h_{12} + | :<math>h_{12} = c_{12} + \rho_m c_{fm} \otimes h_{mf} + \rho_f c_{ff} \otimes h_{12} + \rho_f c_{12} \otimes h_{ff} -2 \rho_f c_{12} \otimes h_{12}</math> | ||
When written in the `percolation terminology' | When written in the `percolation terminology' | ||
where | where <math>c</math> terms ''connected'' and <math>b</math> ''blocking'' are adapted from the | ||
language of percolation theory. | language of percolation theory. | ||
h_{mm} = c_{mm} + \rho_m c_{mm} \otimes h_{mm} | :<math>h_{mm} = c_{mm} + \rho_m c_{mm} \otimes h_{mm}</math> | ||
:<math>h_{fm} = c_{fm} + \rho_m c_{fm} \otimes h_{mm} + \rho_f c_c \otimes h_{fm}</math> | |||
h_{fm} = c_{fm} + \rho_m c_{fm} \otimes h_{mm} + \rho_f c_c \otimes h_{fm} | |||
:<math>h_{ff} = c_{ff} + \rho_m c_{fm} \otimes h_{mf} + \rho_f c_c \otimes h_{ff} + \rho_f c_b \otimes h_c</math> | |||
h_{ff} = c_{ff} + \rho_m c_{fm} \otimes h_{mf} + \rho_f c_c \otimes h_{ff} + \rho_f c_b \otimes h_c | :<math>h_c = c_c + \rho_f c_c \otimes h_c</math> | ||
h_c = c_c + \rho_f c_c \otimes h_c | |||
where the direct correlation function is split into | where the direct correlation function is split into | ||
\ | |||
c_{ff}(12) = c_c (12) + c_b (12) | :<math>\left.c_{ff}(12)\right. = c_c (12) + c_b (12)</math> | ||
and the total correlation function is also split into | and the total correlation function is also split into | ||
\ | :<math>\left.h_{ff}(12)\right.= h_c (12) + h_b(12)</math> | ||
h_{ff}(12)= h_c (12) + h_b(12) | |||
where <math>m</math> denotes the matrix | |||
where | and <math>f</math> denotes the fluid. | ||
and | The blocking function <math>h_b(x)</math> accounts for correlations between a pair of | ||
The blocking function | fluid particles ``blocked" or separated from each other by matrix particles. | ||
fluid particles ``blocked" or separated from each other by matrix particles. | |||
IMPORTANT NOTE: Unlike an equilibrium mixture, there is only one convolution | IMPORTANT NOTE: Unlike an equilibrium mixture, there is only one convolution | ||
integral for | integral for <math>h_{mm}</math> because the structure of the medium is | ||
unaffected by the presence of fluid particles. | unaffected by the presence of fluid particles. | ||
Note: | |||
Note: fluid: | *Note: <math>C_{ff}</math> (Madden and Glandt) <math>=h_c</math> (Given and Stell) | ||
Note: matrix: | *Note: fluid: <math>f</math> (Madden and Glandt), `1' (Given and Stell) | ||
*Note: matrix: <math>m</math> (Madden and Glandt), `0' (Given and Stell) | |||
At very low matrix porosities, i.e. very high densities of matrix particles, | At very low matrix porosities, i.e. very high densities of matrix particles, | ||
the volume accessible to fluid particles is divided into small cavities, each | the volume accessible to fluid particles is divided into small cavities, each | ||
totally surrounded by a matrix. In this limit, the function | totally surrounded by a matrix. In this limit, the function <math>h_c (x)</math> | ||
describes correlations between fluid particles in the same cavity and the | describes correlations between fluid particles in the same cavity and the | ||
function | function <math>h_b(x)</math> describes correlations between particles in different cavities. | ||
==References== | |||
#[JCP_1992_97_04573] | |||
#[PA_1994_209_0495] | |||
#[JSP_1988_51_0537_nolotengoSpringer] | |||
#[JCP_1992_96_05422] | |||
Revision as of 15:45, 21 February 2007
Given and Stell (Refs 1 and 2) provided exact OZ equations for two-phase random media based on the original work of Madden and Glandt (Refs 3 and 4). For a two-species system, for the replicated system one has (see Eq.s 2.7 --2.11 Ref. 2):
- Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle h_{mm} = c_{mm} + \rho_m c_{mm} \otimes h_{mm} + s\rho_f c_{mf} \otimes h_{mf}}
- Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle h_{mf} = c_{mf} + \rho_m c_{mm} \otimes h_{mf} + \rho_f c_{mf} \otimes h_{ff} + (s-1) \rho_f c_{mf} \otimes h_{12}}
- Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle h_{fm} = c_{fm} + \rho_m c_{fm} \otimes h_{mm} + \rho_f c_{ff} \otimes h_{fm} + (s-1) \rho_f c_{12} \otimes h_{fm}}
- Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle h_{ff} = c_{ff} + \rho_m c_{fm} \otimes h_{mf} + \rho_f c_{ff} \otimes h_{ff} + (s-1) \rho_f c_{12} \otimes h_{12}}
- Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle h_{12} = c_{12} + \rho_m c_{fm} \otimes h_{mf} + \rho_f c_{ff} \otimes h_{12} + \rho_f c_{12} \otimes h_{ff} + (s-2) \rho_f c_{12} \otimes h_{12} }
In the limit of Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle s \rightarrow 0}
these equations from the ROZ equations (see Eq.s 2.12 --2.16 Ref. 2):
- Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle h_{mm} = c_{mm} + \rho_m c_{mm} \otimes h_{mm}}
- Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle h_{mf} = c_{mf} + \rho_m c_{mm} \otimes h_{mf} + \rho_f c_{mf} \otimes h_{ff} - \rho_f c_{mf} \otimes h_{12}}
- Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle h_{fm} = c_{fm} + \rho_m c_{fm} \otimes h_{mm} + \rho_f c_{ff} \otimes h_{fm} - \rho_f c_{12} \otimes h_{fm}}
- Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle h_{ff} = c_{ff} + \rho_m c_{fm} \otimes h_{mf} + \rho_f c_{ff} \otimes h_{ff} - \rho_f c_{12} \otimes h_{12}}
- Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle h_{12} = c_{12} + \rho_m c_{fm} \otimes h_{mf} + \rho_f c_{ff} \otimes h_{12} + \rho_f c_{12} \otimes h_{ff} -2 \rho_f c_{12} \otimes h_{12}}
When written in the `percolation terminology' where Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle c} terms connected and Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle b} blocking are adapted from the language of percolation theory.
- Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle h_{mm} = c_{mm} + \rho_m c_{mm} \otimes h_{mm}}
- Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle h_{fm} = c_{fm} + \rho_m c_{fm} \otimes h_{mm} + \rho_f c_c \otimes h_{fm}}
- Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle h_{ff} = c_{ff} + \rho_m c_{fm} \otimes h_{mf} + \rho_f c_c \otimes h_{ff} + \rho_f c_b \otimes h_c}
- Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle h_c = c_c + \rho_f c_c \otimes h_c}
where the direct correlation function is split into
- Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle \left.c_{ff}(12)\right. = c_c (12) + c_b (12)}
and the total correlation function is also split into
- Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle \left.h_{ff}(12)\right.= h_c (12) + h_b(12)}
where Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle m} denotes the matrix and Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle f} denotes the fluid. The blocking function Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle h_b(x)} accounts for correlations between a pair of fluid particles ``blocked" or separated from each other by matrix particles. IMPORTANT NOTE: Unlike an equilibrium mixture, there is only one convolution integral for Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle h_{mm}} because the structure of the medium is unaffected by the presence of fluid particles.
- Note: Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle C_{ff}} (Madden and Glandt) Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle =h_c} (Given and Stell)
- Note: fluid: Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle f} (Madden and Glandt), `1' (Given and Stell)
- Note: matrix: Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle m} (Madden and Glandt), `0' (Given and Stell)
At very low matrix porosities, i.e. very high densities of matrix particles, the volume accessible to fluid particles is divided into small cavities, each totally surrounded by a matrix. In this limit, the function Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle h_c (x)} describes correlations between fluid particles in the same cavity and the function Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle h_b(x)} describes correlations between particles in different cavities.
References
- [JCP_1992_97_04573]
- [PA_1994_209_0495]
- [JSP_1988_51_0537_nolotengoSpringer]
- [JCP_1992_96_05422]