Changes between Version 81 and Version 82 of doc/app/initialization_parameters

Timestamp:

Sep 15, 2010 9:09:05 AM (14 years ago)

Author:

kanani

Comment:

--

doc/app/initialization_parameters

@@ -1219 +1219 @@
 |----------------
 {{{#!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>
+[=#prandtl_layer '''prandtl_layer''']
+}}}
+{{{#!td style="vertical-align:top"
+L
+}}}
+{{{#!td style="vertical-align:top"
+.T.
+}}}
+{{{#!td
+Parameter to switch on a Prandtl layer.\\\\
+By default, a Prandtl layer is switched on at the bottom boundary between z = 0 and z = 0.5 * [#dz dz] (the first computational grid point above ground for u, v and the scalar quantities). In this case, at the bottom boundary, free-slip conditions for u and v (see [#bc_uv_b bc_uv_b]) are not allowed. Likewise, laminar simulations with constant eddy diffusivities ([#km_constant km_constant]) are forbidden.\\\\
+With Prandtl-layer switched off, the TKE boundary condition [#bc_e_b bc_e_b] = '' '(u*){{{**}}}2+neumann' '' must not be used and is automatically changed to '' 'neumann' '' if necessary. Also, the pressure boundary condition [#bc_p_b bc_p_b] = '' 'neumann+inhomo' ''  is not allowed.\\\\
+If the Prandtl-layer is switched off and fluxes shall be prescribed at the surface (by setting [#surface_heatflux surface_heatflux]), it is required to set the parameter [#use_surface_fluxes use_surface_fluxes] = ''.T.''.\\\\
+The roughness length is declared via the parameter [#roughness_length roughness_length].
 }}}
 |----------------