tdeborah.1 - cngf-pf - continuum model for granular flows with pore-pressure dynamics (renamed from 1d_fd_simple_shear)
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       tdeborah.1 (1569B)
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            1 .Dd $Mdocdate$
            2 .Dt DEBORAH 1
            3 .Os
            4 .Sh NAME
            5 .Nm deborah
            6 .Nd dimensionless analysis of grain-fluid interaction
            7 .Sh SYNOPSIS
            8 .Nm
            9 .Op Fl d Ar grain-size
           10 .Op Fl h
           11 .Op Fl i Ar fluid-viscosity
           12 .Op Fl k Ar fluid-permeability
           13 .Op Fl P Ar grain-compressibility
           14 .Op Fl p Ar grain-porosity
           15 .Op Fl s Ar applied-shear-vel
           16 .Op Fl v
           17 .Sh DESCRIPTION
           18 The
           19 .Nm
           20 utility outputs the modified Deborah number.
           21 Values much smaller than 1 correspond to instantaneous fluid-pressure
           22 equilibration, and numbers greater than 1 imply that fluid-pressure
           23 effects are expected.
           24 .Pp
           25 The arguments mirror the program
           26 .Xr cngf-pf 1
           27 and are as follows:
           28 .Bl -tag -width Ds
           29 .It Fl d Ar grain-size
           30 Granular material representative grain size [m] (default 0.04).
           31 .It Fl i Ar fluid-viscosity
           32 Fluid dynamic viscosity [Pa*s] (1.787e-3).
           33 .It Fl k Ar fluid-permeability
           34 Darcian intrinsic permeability of granular material [m^2] (default
           35 1.9e-15).
           36 .It Fl P Ar grain-compressibility
           37 Granular material compressibility [Pa^-1] (default 1e-8).
           38 .It Fl p Ar grain-porosity
           39 Granular material porosity [-] (default 0.25).
           40 .It Fl s Ar applied-shear-vel
           41 Shear the material under constant velocity [m/s] instead of a friction value.
           42 .It Fl v
           43 Show version information.
           44 .El
           45 .Pp
           46 The result is written to stdout.
           47 .Sh EXIT STATUS
           48 .Nm
           49 exits 0 on success, and >0 if a runtime error occurs:
           50 .Pp
           51 .Bl -tag -width Ds -compact
           52 .It 0
           53 successful exit
           54 .It 1
           55 unspecified error
           56 .It 2
           57 .Xr pledge 2
           58 error
           59 .El
           60 .Sh SEE ALSO
           61 .Xr cngf-pf 1 ,
           62 .Xr max_depth_simple_shear 1 ,
           63 .Xr shear_flux 1
           64 .Sh AUTHORS
           65 .An Anders Damsgaard Aq Mt anders@adamsgaard.dk