tInclude pore-skeleton compressibility in skindepth calculation - cngf-pf-exp1 - experiments for first paper with continuum granular model
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       ---
 (DIR) commit 212f9f790c7f67593b0b641dc7be37dd9173817c
 (DIR) parent d082e478c0215f7acc848278f6d1a518896de824
 (HTM) Author: Anders Damsgaard <anders@adamsgaard.dk>
       Date:   Tue, 30 Jun 2020 13:06:46 +0200
       
       Include pore-skeleton compressibility in skindepth calculation
       
       Diffstat:
         M fig-skin_depth/fig.gp               |       3 ++-
       
       1 file changed, 2 insertions(+), 1 deletion(-)
       ---
 (DIR) diff --git a/fig-skin_depth/fig.gp b/fig-skin_depth/fig.gp
       t@@ -12,6 +12,7 @@ set key bottom right #samplen 0.9
        
        # hydraulic parameters
        phi = 0.25
       +alpha = 1e-8
        beta_f = 3.9e-10
        mu_f = 1.787e-3
        #k = 2e-17
       t@@ -23,7 +24,7 @@ f_min = 0.5*1.0/(24*365)/36000.0
        f_max = 2.0/3600.0
        
        # f: frequency, k: permeability
       -skindepth(f,k) = (k/(phi*mu_f*beta_f*3.141592654*f))**(0.5)  # f: 1/s
       +skindepth(f,k) = (k/((alpha + phi*mu_f)*beta_f*3.141592654*f))**(0.5)  # f: 1/s
        
        set xlabel "Forcing frequency {/:Italic f} [1/s]"
        set ylabel "Permeability {/:Italic k} [m^2]"