manus_continuum_granular1

manuscript files for first continuum-till paper
git clone git://src.adamsgaard.dk/manus_continuum_granular1
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commit 39b5afd944076852c08937d7a67420019511a2b6
parent 53ec0d3820ca4ed390835174be96e125c14a5eb0
Author: Anders Damsgaard <anders@adamsgaard.dk>
Date:   Wed,  4 Sep 2019 14:19:13 +0200

Fix merge, update fig3

Diffstat:
Mcontinuum-granular-manuscript1.tex | 9---------
Mexperiments/fig3.pdf | 0
2 files changed, 0 insertions(+), 9 deletions(-)

diff --git a/continuum-granular-manuscript1.tex b/continuum-granular-manuscript1.tex @@ -151,14 +151,6 @@ Future research will investigate how wide grain-size distributions affect strain \subsection{Numerical solution procedure}% \label{sub:numerical_solution_procedure} -<<<<<<< HEAD -The presented formulation is applicable to any spatial dimensionality. -For the purposes of this study we apply it in a 1D spatial reference system. -Axis $x$ is along flow and axis $z$ is pointed upwards with a domain thickness of $L_z$. -Shear deformation is restricted to occur in horizontal (x) shear zones. -We assign depth coordinates $z_i$ and fluidity $g_i$ to a regular grid with ghost nodes and cell spacing $\Delta z$. -The normal stress is assumed to increase with depth due to lithostatic pressure from the overburden ($\sigma_\text{n}(z) = \int^{z'=L_z}_{z'=z} \rho_\text{s} \phi G dz' + \sigma_\text{n,t}$), where G is the magnitude of gravitational acceleration and $\sigma_\text{n,t}$ is the normal stress applied on the top of the domain. -======= We apply the model in a one-dimensional setup where simple shear occurs along the horizontal axis $x$. The vertical axis is denoted $z$. The spatial domain is $L_z = 8$ m long and is discretized into cells with equal size to the representative grain size $d$. @@ -183,7 +175,6 @@ The shear friction is through the depth of the model found as: = \mu_\text{top} \frac{\sigma_\text{n,top}'}{\sigma_\text{n}'(z)}. \label{eq:tau} \end{equation} ->>>>>>> 40980e249147e180020e940365370387fa1083dc We assign depth coordinates $z_i$, granular fluidity $g_i$, and fluid pressure $p_{\text{f},i}$ to a regular grid with ghost nodes and cell spacing $\Delta z$. The fluidity field $g$ is solved for a set of mechanical forcings ($\mu$, $\sigma_\text{n}'$, boundary conditions for $g$), and material parameters ($A$, $b$, $d$). diff --git a/experiments/fig3.pdf b/experiments/fig3.pdf Binary files differ.