tImprove help text and document output format - cngf-pf - continuum model for granular flows with pore-pressure dynamics (renamed from 1d_fd_simple_shear)
 (HTM) git clone git://src.adamsgaard.dk/cngf-pf
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 (DIR) README
 (DIR) LICENSE
       ---
 (DIR) commit 231ab304381ef266046dffb7a26abc5833c32c7b
 (DIR) parent 2baf087eedbc58ed7e34f7c8bc5a3bfe6477aa46
 (HTM) Author: Anders Damsgaard <anders@adamsgaard.dk>
       Date:   Fri, 30 Aug 2019 11:15:37 +0200
       
       Improve help text and document output format
       
       Diffstat:
         M main.c                              |      18 +++++++++++++++++-
       
       1 file changed, 17 insertions(+), 1 deletion(-)
       ---
 (DIR) diff --git a/main.c b/main.c
       t@@ -58,7 +58,23 @@ usage(void)
                        " -H, --fluid-pressure-phase VAL  fluid pressure at +z edge [Pa] (default %g)\n"
                        " -t, --time VAL                  simulation start time [s] (default %g)\n"
                        " -T, --time-end VAL              simulation end time [s] (default %g)\n"
       -                " -I, --file-interval VAL         interval between output files [s] (default %g)\n",
       +                " -I, --file-interval VAL         interval between output files [s] (default %g)\n"
       +                "\n"
       +                "The output (stdout or output files) consists of the following "
       +                "tab-delimited\nfields, with one row per cell:\n"
       +                "   1. z_position [m]\n"
       +                "   2. x_velocity [m/s]\n"
       +                "   3. normal_stress [Pa]\n"
       +                "   4. friction [-]\n"
       +                "   5. strain_rate [1/s]\n\n"
       +                "With --fluid enabled:\n"
       +                "   1. z_position [m]\n"
       +                "   2. x_velocity [m/s]\n"
       +                "   3. effective_normal_stress [Pa]\n"
       +                "   4. fluid_pressure [Pa]\n"
       +                "   5. friction [-]\n"
       +                "   6. strain_rate [1/s]\n"
       +                ,
                        __func__, PROGNAME,
                        sim.G,
                        sim.P_wall,