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Brooks and Corey equation

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Journal Article
Published: 01 May 2005
Vadose Zone Journal (2005) 4 (2): 418–427.
...Joseph A. Kozak; Lajpat R. Ahuja; Liwang Ma; Tim R. Green Abstract A recent study showed all parameters in the Brooks-Corey equations of soil hydraulic properties are strongly correlated to the pore-size distribution index (λ). These λ values relate and can scale cumulative infiltration and water...
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The <span class="search-highlight">Brooks</span> and <span class="search-highlight">Corey</span> <span class="search-highlight">equation</span> (dashed line) fitted to the point (time domai...
Published: 01 August 2013
Fig. 2. The Brooks and Corey equation (dashed line) fitted to the point (time domain reflectometry) capillary pressure–saturation data (solid circles) for silica sand no. 8 from Sakaki and Illangasekare (2007) .
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Comparison of solutions of the generalized Richards <span class="search-highlight">equation</span> that utilized ...
Published: 01 February 2005
Fig. 5. Comparison of solutions of the generalized Richards equation that utilized the van Genuchten and Brooks and Corey functions.
Journal Article
Journal: Geophysics
Published: 18 September 2012
Geophysics (2012) 77 (6): D209–D227.
...). Numerical simulation of mud-filtrate invasion yields the postinvasion radial distribution of water saturation. Rocks are assumed water wet, whereas rock-fluid properties such as saturation-dependent capillary pressure and relative permeability are described in parametric form via Brooks-Corey’s equation...
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Journal Article
Published: 01 August 2013
Vadose Zone Journal (2013) 12 (3): vzj2012.0174.
...Fig. 2. The Brooks and Corey equation (dashed line) fitted to the point (time domain reflectometry) capillary pressure–saturation data (solid circles) for silica sand no. 8 from Sakaki and Illangasekare (2007) . ...
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Journal Article
Published: 01 November 2005
Vadose Zone Journal (2005) 4 (4): 959–966.
.... To estimate D from β it is necessary to know the values for b and P d . The Brooks and Corey (1964) empirical water retention equation is widely used for parameterizing main drying branch data. This model takes the form: 18 \batchmode \documentclass[fleqn,10pt,legalpaper]{article...
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Journal Article
Published: 01 February 2007
Vadose Zone Journal (2007) 6 (1): 124–139.
... are presented for five types of analytical soils: a constant diffusivity, Green and Ampt, Brooks and Corey, versatile nonlinear, and exponential soil. While in the case of constant diffusivity, relative transpiration decreases as a linear function of water content, for the remaining four cases the decrease...
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Journal Article
Published: 01 August 2016
Vadose Zone Journal (2016) 15 (8): vzj2016.02.0012.
.... [1] reduces to the model of Brooks and Corey (1964 , 1966) Solving Eq. [32] for S yields Note that Eq. [32] holds only for h ≥ h * because for h < h * S becomes >1, which is impossible. Equation [33] implies that only the product βγ can be identified, so that one of them...
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Journal Article
Journal: AAPG Bulletin
Published: 01 October 2006
AAPG Bulletin (2006) 90 (10): 1473–1493.
... mobility (equation 3) and the shape of the fractional flow function (equation 4). We calculate the relative permeability of the rock matrix using the Brooks and Corey (1964) model with an exponent of 2. This value is frequently applied to highly nonuniform materials (cf., Helmig, 1997...
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Journal Article
Published: 01 May 2004
Vadose Zone Journal (2004) 3 (2): 527–533.
... this context, we investigated two major issues involving soil hydraulic properties: (i) hydraulic parameter correspondence among some of the more commonly used soil hydraulic conductivity functions (i.e., the Gardner [G], BrooksCorey [BC], and van Genuchten [VG] equations) and (ii) their application...
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Saturation-dependent capillary pressure and relative permeability input to ...
Published: 09 November 2020
Figure 7. Saturation-dependent capillary pressure and relative permeability input to the numerical simulations of mud-filtrate invasion. (a) Capillary pressure is described with Brooks and Corey’s (1964) parametric model for values of entry pressure equal to 3.5, 14, and 31 kPa and λ
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Two-phase fluid flow properties of slip-surface cataclasites from the 90-Fa...
Published: 01 January 2012
the 90-Fathom fault. Curves shown were fitted to data using equations developed by Brooks and Corey (1964 , 1966) .
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The van Genuchten <span class="search-highlight">equation</span> functions for different column heights predicted...
Published: 01 August 2013
Fig. 4. The van Genuchten equation functions for different column heights predicted from a single set of point Brooks and Corey parameters (saturated water content θ s = 0.35 m 3 m −3 , θ r = 0.01 m 3 m −3 , bubbling capillary pressure head h b = 10 cm, and pore-size distribution index λ
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The van Genuchten <span class="search-highlight">equation</span> (dashed line) fitted to height-averaged (Tempe c...
Published: 01 August 2013
Fig. 3. The van Genuchten equation (dashed line) fitted to height-averaged (Tempe cell) capillary pressure–saturation data (solid circles) for silica sand no. 8 from Sakaki and Illangasekare (2007) compared with the van Genuchten equation predicted (solid line) from point Brooks and Corey
Journal Article
Published: 01 February 2011
Vadose Zone Journal (2011) 10 (1): 286–298.
... determined by the BrooksCorey equation ( Brooks and Corey, 1964 ), and Z (m) is the location of the sand–atmosphere boundary ( Fig. 3a ). Hydraulic relationships were estimated by the BrooksCorey equation ( Brooks and Corey, 1964 ). The system boundary conditions are described in Fig. 2b , with the note...
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Journal Article
Published: 01 May 2003
Vadose Zone Journal (2003) 2 (2): 239–246.
.... As shown in Fig. 7 , both the BrooksCorey and van Genuchten models represented the measured capillary pressure curves for intermediate saturations reasonably well. However, potentially significant deviations existed near full saturation and complete dryness. Equations [2] and [3] were used to convert...
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Journal Article
Published: 01 May 2017
Vadose Zone Journal (2017) 16 (5): 1–15.
...) , with Richards’ equation and the BrooksCorey hydraulic model ( Brooks and Corey, 1964 ), and gave consistent simulations with the measured horizontal and vertical soil moisture profiles. However, here, no specific hydraulic property model is used, which means that the results in this research need...
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Journal Article
Published: 01 May 2009
Vadose Zone Journal (2009) 8 (2): 470–479.
... are the parameters of the Brooks and Corey (1964) equation, where h b [L] is the bubbling pressure and λ (dimensionless) is the pore-size distribution index; and K r is the relative unsaturated hydraulic conductivity function. In this case, Ogden and Saghafian (1997) showed that the function G (θ i ,θ o...
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Journal Article
Published: 01 May 2006
Vadose Zone Journal (2006) 5 (2): 764–776.
..., Washington , DC . Warrick , A.W. 2003 . Soil water dynamics . Oxford Univ. Press, Oxford , UK . Table 2. Summary statistics for the BrooksCorey–Burdine (BCB) and van Genuchten–Mualem (VGM) models. Residual mean squared deviation Linear regression equation † and r 2...
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Journal Article
Published: 01 January 2006
Vadose Zone Journal (2006) 5 (1): 234–247.
... are listed in the Appendix A. 1 1 A FORTRAN code to estimate water retention with PTFs of this work is available on request from the corresponding author. Six of the PTFs estimated parameters of the BrooksCorey equation ( Brooks and Corey, 1964 ): 2 \batchmode \documentclass[fleqn,10pt,legalpaper...
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