tAdd comparison to Iverson 2010 - 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 60cf1cd6cf19df4885446386216b44889551ef45
(DIR) parent 78a6e567a38a425ae78900fe60689e2d6103488a
(HTM) Author: Anders Damsgaard <anders@adamsgaard.dk>
Date: Thu, 11 Apr 2019 20:25:04 +0200
Add comparison to Iverson 2010
Diffstat:
A 1d_fd_simple_shear_rheology_iverso… | 25 +++++++++++++++++++++++++
A 1d_fd_simple_shear_rheology_iverso… | 0
M Makefile | 18 ++++++++++++++++--
M README.md | 14 +++++++++++++-
A iverson2010-fig2a.png | 0
A iverson2010-fig2b.png | 0
6 files changed, 54 insertions(+), 3 deletions(-)
---
(DIR) diff --git a/1d_fd_simple_shear_rheology_iverson.gp b/1d_fd_simple_shear_rheology_iverson.gp
t@@ -0,0 +1,25 @@
+#!/usr/bin/env gnuplot
+
+## resemble Iverson 210 plot:
+
+set terminal pngcairo color size 18.6 cm, 11.0 cm
+set output "1d_fd_simple_shear_rheology_iverson.png"
+set xlabel "Shear strain rate [a^{-1}]"
+set ylabel "Shear friction [-]" offset 2
+
+set xrange [1e1:1e6] # m/a
+set yrange [0.0:0.8]
+set key bottom right #samplen 0.9
+
+set logscale x
+
+set style line 1 linetype 1 linewidth 3 pointtype 1 pointsize 1
+
+plot "1d_fd_simple_shear_rheology_b0.01_iverson.txt" u ($2*3600*24*365):1 w l lw 2 t "b = 0.01", \
+ "1d_fd_simple_shear_rheology_b0.10_iverson.txt" u ($2*3600*24*365):1 w l lw 2 t "b = 0.1", \
+ "1d_fd_simple_shear_rheology_b0.30_iverson.txt" u ($2*3600*24*365):1 w l lw 2 t "b = 0.3", \
+ "1d_fd_simple_shear_rheology_b0.50_iverson.txt" u ($2*3600*24*365):1 w l lw 2 t "b = 0.5", \
+ "1d_fd_simple_shear_rheology_b0.70_iverson.txt" u ($2*3600*24*365):1 w l lw 2 t "b = 0.7", \
+ "1d_fd_simple_shear_rheology_b0.90_iverson.txt" u ($2*3600*24*365):1 w l lw 2 t "b = 0.9"
+
+set xtics norotate # Restore defaults
(DIR) diff --git a/1d_fd_simple_shear_rheology_iverson.png b/1d_fd_simple_shear_rheology_iverson.png
Binary files differ.
(DIR) diff --git a/Makefile b/Makefile
t@@ -6,7 +6,8 @@ HDR=$(wildcard *.h)
default: 1d_fd_simple_shear.png \
1d_fd_simple_shear_rheology.png \
- 1d_fd_simple_shear_rheology_kamb.png
+ 1d_fd_simple_shear_rheology_kamb.png \
+ 1d_fd_simple_shear_rheology_iverson.png
1d_fd_simple_shear: $(OBJ) $(HDR)
$(CC) $(LDFLAGS) $(OBJ) -o $@
t@@ -32,7 +33,6 @@ default: 1d_fd_simple_shear.png \
done; done'
gnuplot $<_rheology.gp > $@
-
# 1 bar is equal to 100 kPa
1d_fd_simple_shear_rheology_kamb.png: 1d_fd_simple_shear 1d_fd_simple_shear_rheology_kamb.gp
/bin/bash -c '\
t@@ -46,6 +46,20 @@ default: 1d_fd_simple_shear.png \
done; done'
gnuplot $<_rheology_kamb.gp > $@
+# shear-strain rate from 10^1 to 10^6 m/a
+# friction around 0.55
+1d_fd_simple_shear_rheology_iverson.png: 1d_fd_simple_shear 1d_fd_simple_shear_rheology_iverson.gp
+ /bin/bash -c '\
+ for b in $$(printf "0.01\n"; seq 0.10 0.20 0.90); do \
+ out="$<_rheology_b$${b}_iverson.txt"; \
+ rm -f "$$out"; \
+ for t in $$(seq 0.0001 0.002 1.0); do \
+ printf "$$t\t" >> "$$out"; \
+ ./$< -f 0.55 -P 100e3 -L 1.0 --stress-ratio $$t -b $$b | \
+ tail -n 1 | cut -f2 >> "$$out"; \
+ done; done'
+ gnuplot $<_rheology_iverson.gp > $@
+
.PHONY: watch
watch:
echo $(SRC) $(HDR) | tr ' ' '\n' | entr -s 'make && ./1d_fd_simple_shear'
(DIR) diff --git a/README.md b/README.md
t@@ -37,10 +37,22 @@ Glass beads have *b* = 0.94.
-Comparison to Kamb 1991:
+---
+
+#### Continuum model
#### Kamb 1991, subglacial till from Upstream-B site
+
+---
+
+#### Continuum model
+
+
+
+#### Iverson 2010, various subglacial tills
+
+
(DIR) diff --git a/iverson2010-fig2a.png b/iverson2010-fig2a.png
Binary files differ.
(DIR) diff --git a/iverson2010-fig2b.png b/iverson2010-fig2b.png
Binary files differ.