# [cig-commits] r8099 - doc/CitcomS/manual

sue at geodynamics.org sue at geodynamics.org
Wed Oct 10 14:03:51 PDT 2007

Author: sue
Date: 2007-10-10 14:03:50 -0700 (Wed, 10 Oct 2007)
New Revision: 8099

Modified:
doc/CitcomS/manual/citcoms.lyx
Log:
typos fixed

Modified: doc/CitcomS/manual/citcoms.lyx
===================================================================
--- doc/CitcomS/manual/citcoms.lyx	2007-10-10 21:00:13 UTC (rev 8098)
+++ doc/CitcomS/manual/citcoms.lyx	2007-10-10 21:03:50 UTC (rev 8099)
@@ -630,7 +630,7 @@
n dependent viscosity and heat generation by Thorsten Becker; (7) compressed
ASCII output by Thorsten Becker; (8) an easier way for mesh refinement
for the radial coordinate by Thorsten Becker; (9) an exchanger package
- for solver coupling; (10) removing the ridig rotation component from the
+ for solver coupling; (10) removing the rigid rotation component from the
velocity by Shijie Zhong; and (11) an option to disable monitoring of maximum
temperature.
Additional backward incompatible changes include: (1) the viscosity field
@@ -9862,7 +9862,7 @@
\end_layout

\begin_layout Section
\end_layout

\begin_layout Subsection
@@ -9873,11 +9873,11 @@
This example is a benchmark problem for compressible thermal convection.
The initial temperature has a single spherical harmonic perturbation.
The numerical solution of the velocity and stress fields can be compared
- with semi-analytical solution.
+ with semi-analytical solutions.
The Stokes solver is benchmarked and validated.
- However, no analytical solution exits for the benchmark on the energy euation
+ However, no analytical solution exits for the benchmark on the energy equation
solver, which is nonlinear.
- The steady state solution is usually used for the comparison with other
+ The steady-state solution is usually used for the comparison with other
numerical solutions.

\end_layout
@@ -9887,10 +9887,10 @@
\end_layout

\begin_layout Standard
-This cookbook example will run for 10000 time step to reach steady state.
- It will use 12 processors and take 1-2 days to finish on a modern computer.
- At every 1000 time step interval, a checkpoint for the internal state of
- the solver is saved.
+This cookbook example will run for 10000 time steps to reach steady state.
+ It will use 12 processors and take 1 to 2 days to finish on a modern computer.
+ At every 1000th time-step interval, a checkpoint for the internal state
+ of the solver is saved.
\end_layout

\begin_layout LyX-Code
@@ -9900,11 +9900,11 @@
\begin_layout Standard
If the solver is interrupted before finishing the computation, one can resume
the computation from the checkpointed state.
- To shorten the computation time, a checkpoint at 9000 time step is provided.
+ To shorten the computation time, a checkpoint at the 9000th time step is
+ provided.
(Note that the checkpoint files are produced by a x86 machine and may not
- be usable by other types of machines, e.g.
- PowerPC.) To resume the computation from the 9000 time step checkpoint,
- set these parameters:
+ be usable by other types of machines, e.g., PowerPC.) To resume the computation
+ from the 9000th time-step checkpoint, set these parameters:
\end_layout

\begin_layout LyX-Code
@@ -9925,7 +9925,7 @@
\end_inset

.
- The Rayleigh number of CitcomS is scaled by the radius of Earth.
+ The Rayleigh number of CitComS is scaled by the radius of the Earth.
If scaled to the thickness of the mantle, the effective Rayleigh number
is
\begin_inset Formula $7\times10{}^{3}$
@@ -9942,11 +9942,11 @@
\family typewriter
reference_state=0
\family default
-, constant gravity, heat capacity, thermal expansivity, and
+, then constant gravity, heat capacity, thermal expansivity, and
\begin_inset Formula $\rho_{r}=exp\left(\frac{D_{i}}{\gamma}(1-r)\right)$
\end_inset

- is used as the reference state.
+ are used as the reference state.
If
\family typewriter
reference_state=1
@@ -9973,7 +9973,7 @@

\begin_layout Standard
You will need the output of dynamic topography and geoid.
- The maxima spherical harmonics degree for the geoid is 20.
+ The maximum spherical harmonics degree for the geoid is 20.
\end_layout

\begin_layout LyX-Code
@@ -9984,9 +9984,10 @@

\begin_layout Standard
Various parameters tune the performance of the solver.
- The maxima size of time step is determined dynamically by the Courant criterion.
- The enhance the stability of the energy equation solver, you will only
- use three quaters of the maxima Courant time step size.
+ The maximum size of each time step is determined dynamically by the Courant
+ criterion.
+ To enhance the stability of the energy equation solver, you will only use
+ three quarters of the maximum Courant time step size.
\end_layout

\begin_layout LyX-Code
@@ -9999,7 +10000,8 @@
\end_inset

for x.
- Multigrid solver is more efficient than the conjugate gradient solver (
+ The multigrid solver is more efficient than the conjugate gradient solver
+ (
\family typewriter
\family default
@@ -10065,7 +10067,7 @@

.
These parameters specify whether to enable the formulation and how much
- weight for the formulation.
+ weight to use for the formulation.
\end_layout

\begin_layout LyX-Code
@@ -10075,7 +10077,7 @@
\end_layout

\begin_layout Standard
-The discrete Stokes' equations
+The discrete Stokes equations
\begin_inset LatexCommand ref
reference "eq:discrete continuite eqn"

@@ -10089,10 +10091,10 @@

are solved using a Uzawa algorithm, which iteratively updates the pressure
and velocity solutions.
- Three variations of Uzawa algorithm are used in CitcomS, one for the incompress
-ible case, and the other two for the compressible case.
+ Three variations of the Uzawa algorithm are used in CitComS, one for the
+ incompressible case, and the other two for the compressible case.
Two parameters are common to the three variations.
- These parameters specify the maxima number of iterations and the desired
+ These parameters specify the maximum number of iterations and the desired
residual level for the continuity equation
\begin_inset LatexCommand ref
reference "eq:discrete continuite eqn"
@@ -10131,9 +10133,9 @@
\end_inset

is used.
- In this case, two additional parameters control the maxima number and the
- desired accuracy of outer iterations.
- If If
+ In this case, two additional parameters control the maximum number and
+ the desired accuracy of outer iterations.
+ If
\family typewriter
uzawa=bicg
\family default
@@ -10156,7 +10158,7 @@

\begin_layout Standard
Finaly, the rigid rotation component of the velocity solution is removed.
- The mode of rigid body rotation is unconstrainted by the Stokes' equation,
+ The mode of rigid body rotation is unconstrainted by the Stokes equation,
if free-slip boundary conditions are used for the top and bottom boundaries
of a full spherical model.
However, for models with imposed plate velocity, it is advised to turn
@@ -10176,7 +10178,7 @@
\end_layout

\begin_layout Subsubsection
\end_layout

\begin_layout LyX-Code
@@ -10423,7 +10425,7 @@

\begin_layout Standard
\begin_inset Float figure
-placement h
+placement H
wide false
sideways false
status collapsed
@@ -10447,8 +10449,8 @@

\end_inset

-Cookbook 8: The steady state temperature field at 10000 time step.
- A tetrahedra symetric convection pattern is developed.
+Cookbook 8: The steady state temperature field at the 10000 time step.
+ A tetrahedra symmetric convection pattern is developed.
Two temperature isosurfaces of 0.4 and 0.8 are shown.

\end_layout