Changeset 3989 for branches/2013/dev_r3853_CNRS9_ConfSetting/DOC/TexFiles/Chapters/Chap_DYN.tex

Timestamp:

2013-07-24T11:48:35+02:00 (11 years ago)

Author:

clevy

Message:

Configuration setting/Step3 and doc, see ticket:#1074

File:

• branches/2013/dev_r3853_CNRS9_ConfSetting/DOC/TexFiles/Chapters/Chap_DYN.tex (modified) (9 diffs)

branches/2013/dev_r3853_CNRS9_ConfSetting/DOC/TexFiles/Chapters/Chap_DYN.tex

@@ -1 +1 @@
 % ================================================================
-% Chapter Ñ Ocean Dynamics (DYN)
+% Chapter � Ocean Dynamics (DYN)
 % ================================================================
 \chapter{Ocean Dynamics (DYN)}
@@ -167 +167 @@
 The vector invariant form of the momentum equations is the one most 
 often used in applications of the \NEMO ocean model. The flux form option 
-(see next section) has been present since version $2$. 
+(see next section) has been present since version $2$. Options are defined
+through the \ngn{namdyn\_adv} namelist variables
 Coriolis and momentum advection terms are evaluated using a leapfrog 
 scheme, $i.e.$ the velocity appearing in these expressions is centred in 
@@ -184 +185 @@
 %-------------------------------------------------------------------------------------------------------------
 
+Options are defined through the \ngn{namdyn\_vor} namelist variables.
 Four discretisations of the vorticity term (\textit{ln\_dynvor\_xxx}=true) are available: 
 conserving potential enstrophy of horizontally non-divergent flow (ENS scheme) ; 
@@ -382 +384 @@
 %-------------------------------------------------------------------------------------------------------------
 
+Options are defined through the \ngn{namdyn\_adv} namelist variables.
 In the flux form (as in the vector invariant form), the Coriolis and momentum 
 advection terms are evaluated using a leapfrog scheme, $i.e.$ the velocity 
@@ -526 +529 @@
 %-------------------------------------------------------------------------------------------------------------
 
+Options are defined through the \ngn{namdyn\_hpg} namelist variables.
 The key distinction between the different algorithms used for the hydrostatic 
 pressure gradient is the vertical coordinate used, since HPG is a \emph{horizontal} 
@@ -712 +716 @@
 
 %%%
+Options are defined through the \ngn{namdyn\_spg} namelist variables.
 The surface pressure gradient term is related to the representation of the free surface (\S\ref{PE_hor_pg}). The main distinction is between the fixed volume case (linear free surface) and the variable volume case (nonlinear free surface, \key{vvl} is defined). In the linear free surface case (\S\ref{PE_free_surface}) the vertical scale factors $e_{3}$ are fixed in time, while they are time-dependent in the nonlinear case (\S\ref{PE_free_surface}). With both linear and nonlinear free surface, external gravity waves are allowed in the equations, which imposes a very small time step when an explicit time stepping is used. Two methods are proposed to allow a longer time step for the three-dimensional equations: the filtered free surface, which is a modification of the continuous equations (see \eqref{Eq_PE_flt}), and the split-explicit free surface described below. The extra term introduced in the filtered method is calculated implicitly, so that the update of the next velocities is done in module \mdl{dynspg\_flt} and not in \mdl{dynnxt}.
 
@@ -931 +936 @@
 %-------------------------------------------------------------------------------------------------------------
 
+Options are defined through the \ngn{namdyn\_ldf} namelist variables.
 The options available for lateral diffusion are to use either laplacian 
 (rotated or not) or biharmonic operators. The coefficients may be constant 
@@ -1060 +1066 @@
 %-------------------------------------------------------------------------------------------------------------
 
+Options are defined through the \ngn{namzdf} namelist variables.
 The large vertical diffusion coefficient found in the surface mixed layer together 
 with high vertical resolution implies that in the case of explicit time stepping there 
@@ -1130 +1137 @@
 %-------------------------------------------------------------------------------------------------------------
 
+Options are defined through the \ngn{namdom} namelist variables.
 The general framework for dynamics time stepping is a leap-frog scheme, 
 $i.e.$ a three level centred time scheme associated with an Asselin time filter