tmax_depth_simple_shear.1 - 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 (DIR) Log (DIR) Files (DIR) Refs (DIR) README (DIR) LICENSE --- tmax_depth_simple_shear.1 (2503B) --- 1 .Dd $Mdocdate$ 2 .Dt MAX_DEPTH_SIMPLE_SHEAR 1 3 .Os 4 .Sh NAME 5 .Nm max_depth_simple_shear 6 .Nd deformation characteristics from fluid perturbation 7 .Sh SYNOPSIS 8 .Nm 9 .Op Fl a Ar fluid-pressure-ampl 10 .Op Fl C Ar fluid-compressibility 11 .Op Fl D Ar fluid-diffusivity 12 .Op Fl g Ar gravity-accel 13 .Op Fl h 14 .Op Fl i Ar fluid-viscosity 15 .Op Fl k Ar fluid-permeability 16 .Op Fl P Ar grain-compressibility 17 .Op Fl p Ar grain-porosity 18 .Op Fl q Ar fluid-pressure-freq 19 .Op Fl R Ar fluid-density 20 .Op Fl r Ar grain-density 21 .Op Fl v 22 .Sh DESCRIPTION 23 The 24 .Nm 25 utility outputs the maximum expected deformation depth in a sheared 26 granular system with sinusoidal fluid-pressure perturbations from 27 the top. 28 It is assumed that the granular layer has uniform thickness and 29 porosity. 30 .Pp 31 The arguments mirror the sister program 32 .Xr cngf-pf 1 33 and are as follows: 34 .Bl -tag -width Ds 35 .It Fl a Ar fluid-pressure-ampl 36 Amplitude of fluid-pressure perturbations [Pa] (default 0). 37 .It Fl C Ar fluid-compressibility 38 Fluid adiabatic compressibility [Pa^-1] (default 3.9e-10). 39 .It Fl D Ar fluid-diffusivity 40 Fluid diffusion coefficient [m^2/s] (default -1). Overrides fluid 41 permeability (-k), grain compressibility (-P), fluid compressibility 42 (-C), and fluid viscosity (-i). Disabled when set to a negative 43 value. 44 .It Fl g Ar gravity-accel 45 Gravity magnitude [m/s^2] (default 9.81). 46 .It Fl h 47 Show usage information. 48 .It Fl i Ar fluid-viscosity 49 Fluid dynamic viscosity [Pa*s] (1.787e-3). 50 .It Fl k Ar fluid-permeability 51 Darcian intrinsic permeability of granular material [m^2] (default 52 1.9e-15). 53 .It Fl P Ar grain-compressibility 54 Granular material compressibility [Pa^-1] (default 1e-8). 55 .It Fl p Ar grain-porosity 56 Granular material porosity [-] (default 0.25). 57 .It Fl q Ar fluid-pressure-freq 58 Frequency of fluid-pressure perturbations [s^-1] (default 1). 59 .It Fl R Ar fluid-density 60 Fluid density [kg/m^3] (default 1000). 61 .It Fl r Ar grain-density 62 Granular material density [kg/m^3] (default 2600). 63 .It Fl v 64 Show version information. 65 .El 66 .Pp 67 The result is written to stdout in the following tab-delimited 68 format: 69 .Pp 70 .Bl -enum -compact 71 .It 72 maximum deformation depth [m] 73 .It 74 skin depth [m] 75 .El 76 .Sh EXIT STATUS 77 .Nm 78 exits 0 on success, and >0 if a runtime error occurs: 79 .Pp 80 .Bl -tag -width Ds -compact 81 .It 0 82 successful exit 83 .It 1 84 unspecified error 85 .It 2 86 .Xr pledge 2 87 error 88 .It 10 89 skin depth vs. depth error 90 .It 11 91 no stress minima found in search range 92 .El 93 .Sh SEE ALSO 94 .Xr cngf-pf 1 , 95 .Xr shear_flux 1 96 .Sh AUTHORS 97 .An Anders Damsgaard Aq Mt anders@adamsgaard.dk