Changes between Version 479 and Version 480 of doc/app/initialization_parameters

Timestamp:

Oct 28, 2020 4:00:02 PM (4 years ago)

Author:

raasch

Comment:

--

doc/app/initialization_parameters

@@ -2218 +2218 @@
 the simulation will be aborted. Such situations usually arise in case of any numerical problem / instability which causes a non-realistic increase of the wind speed.\\\\
 A small time step due to a large mean horizontal wind speed may be enlarged by using a coordinate transformation (see [#galilei_transformation galilei_transformation]), in order to spare CPU time.\\\\
-'''Warning:''' The simulation will crash in case of a fixed '''dt''', if the given value violates the CFL criterion at any time throughout the run. You should run the case without setting '''dt''' first, and check how small the timestep can become.  
+'''Warning:''' The simulation will crash in case of a fixed '''dt''', if the given value violates the CFL criterion at any time throughout the run. Even worse, the simulation may continue to run up to the end, producing NaN data, if you have not switched on the floating point error detection by setting a respective compiler option (e.g. {{{-fpe0}}} for the Intel compiler). You should run the case without setting '''dt''' first, and check how small the timestep can become. 
 }}}
 |----------------