Changeset 6082

Timestamp:

Dec 16, 2008, 12:21:29 PM (14 years ago)

Author:

jakeman

Message:

some validation notes

File:

• anuga_work/publications/boxing_day_validation_2008/patong_validation.tex (modified) (1 diff)

anuga_work/publications/boxing_day_validation_2008/patong_validation.tex

@@ -281 +281 @@
 
 \end{document}
+
+We can never prove that a model of a physical system is correct only that it does not fail under certain conditions. 
+A model must be verified and validation. The former is the process of indentifying whether the numerical solver used produces an accurate solution of the governing equaations. The later is used to assess whether the model adequately represents the physcial system. This is achived by comparing the model resutls with physical measurements/observed data and theory. Sometimes coincidence will mean that a less numerically accurate solution can match the measured data more closely than a more numerically accurate one. So it is necessary to first reduce numerical error through the verification processs and then assess modelling errors. lane
+
+Is the difference between modelled resutls and observations a result of of poor model process and representation and numerics or poor model paramteterisation horrit