Changes between Version 250 and Version 251 of doc/app/initialization_parameters

Timestamp:

Jan 21, 2015 5:11:18 PM (10 years ago)

Author:

raasch

Comment:

--

doc/app/initialization_parameters

@@ -1298 +1298 @@
 Top boundary condition of the perturbation pressure.\\\\
 Allowed values are '' 'dirichlet' '' (p(k=nz+1)= 0.0) or '' 'neumann' '' (p(k=nz+1)=p(k=nz)).\\\\
-Simultaneous use of Neumann boundary conditions both at the top and bottom boundary ([#bc_p_b bc_p_b]) usually yields no consistent solution for the perturbation pressure and should be avoided. Since at the bottom boundary the Neumann condition  is a good choice (see [#bc_p_b bc_p_b]), a Dirichlet condition should be set at the top boundary.
+Simultaneous use of Neumann boundary conditions both at the top and bottom boundary ([#bc_p_b bc_p_b]) yields no consistent solution for the perturbation pressure in case that the multigrid method is used for solving the Poisson equation (see [#psolver psolver]), and should be avoided. Since at the bottom boundary the Neumann condition  is a good choice (see [#bc_p_b bc_p_b]), in that case a Dirichlet condition should be set at the top boundary.
 }}}
 |----------------