Changeset 2742

Timestamp:

Apr 21, 2006, 8:45:04 AM (19 years ago)

Author:

ole

Message:

More FAQs

File:

• documentation/user_manual/anuga_user_manual.tex (modified) (1 diff)

documentation/user_manual/anuga_user_manual.tex

@@ -1852 +1852 @@
 This is for example useful in conjunction with a file_boundary, which may start hours before anything hits the model boundary. By assigning a later time for the model to start, computational resources aren't wasted.
 
+\subsubsection{Can I change values for any quantity during the simulation?}
+Yes, using \code{domain.set_quantity()} inside the domain.evolve loop you 
+can change values of any quantity. This is for example useful if you wish to 
+let the system settle for a while before assigning an initial condition. Another example would be changing the values for elevation to model e.g. erosion.
+
+\subsubsection{Can I change boundary conditions during the simulation?}
+Not sure, but it would be nice :-)
+
 \subsubsection{Why does a file\_function return a list of numbers when evaluated?}
+Currently, file\_function works by returning values for the conserved 
+quantities \code{stage}, \code{xmomentum} and \code{ymomentum} at a given point in time and space as a triplet. To access e.g.\ \code{stage} one must specify element 0 of the triplet returned by file\_function.
 
 \subsubsection{Which diagnostics are available to troubleshoot a simulation?}