tupdate shear experiment example with better starting values - Granular.jl - Ju… | |
git clone git://src.adamsgaard.dk/Granular.jl | |
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--- | |
commit 87b8f3e8198ea565c02357def210d607b369408b | |
parent f2de5349fdadc6435af4d5d99cd32a93c620cd2d | |
Author: Anders Damsgaard <[email protected]> | |
Date: Thu, 16 Nov 2017 13:06:08 -0800 | |
update shear experiment example with better starting values | |
Diffstat: | |
M examples/shear.jl | 21 ++++++++++++--------- | |
1 file changed, 12 insertions(+), 9 deletions(-) | |
--- | |
diff --git a/examples/shear.jl b/examples/shear.jl | |
t@@ -19,7 +19,7 @@ const nx = 10 # Grains along x (hori… | |
const ny = 50 # Grains along y (vertical) | |
# Grain-size parameters | |
-const r_min = 0.01 # Min. grain radius [m] | |
+const r_min = 0.03 # Min. grain radius [m] | |
const r_max = 0.1 # Max. grain radius [m] | |
const gsd_type = "powerlaw" # "powerlaw" or "uniform" sizes between … | |
const gsd_powerlaw_exponent = -1.8 # GSD power-law exponent | |
t@@ -33,10 +33,15 @@ const contact_dynamic_friction = 0.4 # Coulomb-frictional… | |
const rotating = true # Allow grain rotation | |
# Normal stress for the consolidation and shear [Pa] | |
-const N = 10e3 | |
+const N = 20e3 | |
# Shear velocity to apply to the top grains [m/s] | |
-const vel_shear = 0.01 | |
+const vel_shear = 0.5 | |
+ | |
+# Simulation duration of individual steps [s] | |
+const t_init = 2.0 | |
+const t_cons = 1.0 | |
+const t_shear = 5.0 | |
##############################################################################… | |
#### Step 1: Create a loose granular assemblage and let it settle at -y … | |
t@@ -81,10 +86,10 @@ Granular.setTimeStep!(sim) | |
# Set the total simulation time for this step [s] | |
# This value may need tweaking if grain sizes or numbers are adjusted. | |
-Granular.setTotalTime!(sim, 1.) | |
+Granular.setTotalTime!(sim, t_init) | |
# Set the interval in model time between simulation files [s] | |
-Granular.setOutputFileInterval!(sim, .01) | |
+Granular.setOutputFileInterval!(sim, .02) | |
# Visualize the grain-size distribution | |
Granular.plotGrainSizeDistribution(sim) | |
t@@ -149,7 +154,7 @@ end | |
Granular.resetTime!(sim) | |
# Set the simulation time to run the consolidation for | |
-Granular.setTotalTime!(sim, 1.0) | |
+Granular.setTotalTime!(sim, t_cons) | |
# Run the consolidation experiment, and monitor top wall position over time | |
time = Float64[] | |
t@@ -160,8 +165,6 @@ while sim.time < sim.time_total | |
for i=1:100 # run for 100 steps before measuring shear stress and dilation | |
Granular.run!(sim, single_step=true) | |
end | |
- println(sim.walls[1]) | |
- println(sim.walls[1].pos) | |
append!(time, sim.time) | |
append!(compaction, sim.walls[1].pos) | |
t@@ -210,7 +213,7 @@ Granular.zeroKinematics!(sim) | |
Granular.resetTime!(sim) | |
# Set the simulation time to run the shear experiment for | |
-Granular.setTotalTime!(sim, 2.0) | |
+Granular.setTotalTime!(sim, t_shear) | |
# Run the shear experiment | |
time = Float64[] |