Changes between Version 23 and Version 24 of doc/app/initialization_parameters

Timestamp:

Sep 13, 2010 2:22:20 PM (16 years ago)

Author:

kanani

Comment:

--

doc/app/initialization_parameters

@@ -174 +174 @@
 |----------------
 {{{#!td style="vertical-align:top"
-[=#<insert_parameter_name> '''<insert_parameter_name>''']
-}}}
-{{{#!td style="vertical-align:top"
-<insert type>
-}}}
-{{{#!td style="vertical-align:top"
-<insert value>
-}}}
-{{{#!td
-<insert explanation>
+[=#bc_ns '''bc_ns''']
+}}}
+{{{#!td style="vertical-align:top"
+C*20
+}}}
+{{{#!td style="vertical-align:top"
+'cyclic'
+}}}
+{{{#!td
+Boundary condition along y (for all quantities).\\\\
+By default, a cyclic boundary condition is used along y.\\\\
+'''bc_ns''' may also be assigned the values '' 'dirichlet/radiation' '' (inflow from rear ("north"), outflow to the front ("south")) or '' 'radiation/dirichlet' '' (inflow from front ("south"), outflow to the rear ("north")). This requires the multi-grid method to be used for solving the Poisson equation for perturbation pressure (see [../d3par#psolver psolver]) and it also requires cyclic boundary conditions along x (see
+[#bc_lr bc_lr]).\\\\
+In case of these non-cyclic lateral boundaries, a Dirichlet condition is used at the inflow for all quantities (initial vertical profiles - see [#initializing_actions initializing_actions] - are fixed during the run) except u, to which a Neumann (zero gradient) condition is applied. At the outflow, a radiation condition is used for all velocity components, while a Neumann (zero gradient) condition is used for the scalars. For perturbation pressure Neumann (zero gradient) conditions are assumed both at the inflow and at the outflow.\\\\
+For further details regarding non-cyclic lateral boundary conditions see [#bc_lr bc_lr].
 }}}
 |----------------