Changes between Version 5 and Version 6 of ModellingQuestions

Timestamp:

Oct 20, 2008, 1:46:04 PM (16 years ago)

Author:

rwilson

Comment:

--

ModellingQuestions

@@ -106 +106 @@
 (as for the {{{run_sydney_smf.py}}} example).
 
+== How can I set the friction in different areas in the domain? ==
+
+The model area will typically be estimating the water height and momentum over varying
+topographies which will have different friction values. One way of assigning
+different friction values is to create polygons (say {{{poly1, poly2 and poly3}}}) describing each
+area and then set the corresponding friction values in the following way:
+
+{{{domain.set_quantity('friction',Polygon_function([(poly1,f1),(poly2,f2), (poly3,f3))]))}}}
+
+The values of {{{f1}}}, {{{f2}}} and {{{f3}}} could be constant or functions
+as determined by the user.
 
 
-