<s>
ANUGA	B-Application
Hydro	I-Application
is	O
a	O
free	B-Application
and	I-Application
open	I-Application
source	I-Application
software	I-Application
tool	O
for	O
hydrodynamic	O
modelling	O
,	O
suitable	O
for	O
predicting	O
the	O
consequences	O
of	O
hydrological	O
disasters	O
such	O
as	O
riverine	O
flooding	O
,	O
storm	O
surges	O
and	O
tsunamis	B-Application
.	O
</s>
<s>
For	O
example	O
,	O
ANUGA	O
can	O
be	O
used	O
to	O
create	O
predicted	O
inundation	O
maps	O
based	O
on	O
hypothetical	O
tsunami	B-Application
or	O
flood	O
scenarios	O
.	O
</s>
<s>
The	O
ANUGA	O
name	O
without	O
qualification	O
is	O
used	O
informally	O
to	O
mean	O
the	O
ANUGA	B-Application
Hydro	I-Application
tool	O
.	O
</s>
<s>
Modelling	O
the	O
effects	O
on	O
the	O
built	O
environment	O
of	O
natural	O
hazards	B-General_Concept
such	O
as	O
riverine	O
flooding	O
,	O
storm	O
surges	O
and	O
tsunami	B-Application
is	O
critical	O
for	O
understanding	O
their	O
economic	O
and	O
social	O
impact	O
on	O
our	O
urban	O
communities	O
.	O
</s>
<s>
Geoscience	O
Australia	O
and	O
the	O
Australian	O
National	O
University	O
have	O
developed	O
a	O
freely	O
available	O
hydrodynamic	O
inundation	O
modelling	O
tool	O
called	O
ANUGA	O
to	O
help	O
simulate	O
the	O
impact	O
of	O
these	O
hazards	B-General_Concept
.	O
</s>
<s>
Although	O
the	O
initial	O
aim	O
of	O
ANUGA	O
was	O
a	O
capability	O
to	O
model	O
inundation	O
from	O
storm	O
surge	O
events	O
,	O
the	O
focus	O
was	O
redirected	O
to	O
tsunami	B-Application
inundation	O
in	O
the	O
wake	O
of	O
the	O
2004	O
Indian	O
Ocean	O
earthquake	O
and	O
tsunami	B-Application
.	O
</s>
<s>
The	O
fluid	O
dynamics	O
in	O
ANUGA	O
are	O
based	O
on	O
a	O
Finite	B-Algorithm
volume	I-Algorithm
method	I-Algorithm
for	O
solving	O
the	O
Shallow	O
Water	O
Wave	O
Equation	O
.	O
</s>
<s>
By	O
solving	O
the	O
governing	O
equation	O
within	O
each	O
cell	O
,	O
water	O
surface	O
,	O
bed	O
elevation	O
(	O
hence	O
depth	O
)	O
and	O
horizontal	O
(	O
X-y	O
)	O
momentum	B-Algorithm
are	O
tracked	O
over	O
time	O
.	O
</s>
<s>
ANUGA	O
is	O
also	O
capable	O
of	O
modelling	O
hydraulic	O
jumps	O
due	O
to	O
the	O
ability	O
of	O
the	O
finite-volume	B-Algorithm
method	I-Algorithm
to	O
accommodate	O
discontinuities	O
in	O
the	O
solution	O
.	O
</s>
<s>
While	O
ANUGA	O
works	O
with	O
discontinuities	O
in	O
the	O
conserved	O
momentum	B-Algorithm
quantities	O
,	O
only	O
the	O
discontinuous	O
elevation	O
solvers	O
allow	O
discontinuities	O
in	O
the	O
bed	O
elevation	O
.	O
</s>
<s>
Most	O
ANUGA	O
components	O
are	O
written	O
in	O
the	O
object-oriented	O
programming	O
language	O
Python	B-Language
.	O
</s>
<s>
Software	O
written	O
in	O
Python	B-Language
can	O
be	O
produced	O
quickly	O
and	O
can	O
be	O
readily	O
adapted	O
to	O
changing	O
requirements	O
throughout	O
its	O
lifetime	O
.	O
</s>
<s>
Computationally	O
intensive	O
components	O
are	O
written	O
for	O
efficiency	O
in	O
C	B-Language
routines	O
working	O
directly	O
with	O
Python	B-Language
numpy	B-Application
structures	O
.	O
</s>
<s>
Examples	O
include	O
validation	O
against	O
the	O
wave	O
tank	O
experiment	O
for	O
the	O
Okushiri	O
1995	O
tsunami	B-Application
,	O
wave	O
tank	O
runup	O
experiments	O
at	O
University	O
of	O
Queensland	O
,	O
the	O
2004	O
Indian	O
Ocean	O
tsunami	B-Application
impact	O
at	O
Patong	O
Beach	O
,	O
comparison	O
to	O
other	O
models	O
,	O
ANUGA	O
was	O
a	O
late	O
entry	O
in	O
the	O
UK	O
2D	O
model	O
Benchmarking	O
project	O
in	O
2010	O
using	O
version	O
1.1beta_7501	O
.	O
</s>
<s>
2017/05/20	O
:	O
GitHub	B-Application
Branch	O
created	O
to	O
initiate	O
development	O
of	O
SWMMLINK	O
1D	O
Pipe	O
network	O
to	O
ANUGA	O
2D	O
Dr.	O
Ole	O
Nielsen	O
,	O
Assoc	O
.	O
</s>
<s>
The	O
finite	B-Algorithm
volume	I-Algorithm
is	O
a	O
very	O
robust	O
and	O
flexible	O
numerical	O
technique	O
,	O
especially	O
when	O
implemented	O
on	O
an	O
unstructured	O
triangular	O
mesh	O
,	O
but	O
it	O
is	O
not	O
the	O
fastest	O
method	O
around	O
,	O
and	O
over	O
sufficiently	O
simple	O
geometries	O
alternative	O
algorithms	O
may	O
be	O
able	O
to	O
solve	O
the	O
problem	O
faster	O
than	O
ANUGA	O
.	O
</s>
<s>
ANUGA	O
has	O
been	O
used	O
to	O
assess	O
the	O
likely	O
difference	O
in	O
tsunami	B-Application
amplification	O
and	O
dissipation	O
between	O
different	O
characteristic	O
coastal	O
embayments	O
,	O
coastal	O
entrances	O
and	O
estuaries	O
The	O
results	O
showed	O
that	O
:	O
</s>
<s>
ANUGA	O
has	O
been	O
used	O
to	O
understand	O
tsunami	B-Application
risk	O
to	O
the	O
Western	O
Australia	O
coastline	O
and	O
the	O
results	O
of	O
this	O
work	O
are	O
being	O
utilised	O
by	O
emergency	O
managers	O
and	O
the	O
Department	O
for	O
Planning	O
and	O
Infrastructure	O
in	O
Western	O
Australia	O
.	O
</s>
<s>
The	O
source	O
code	O
is	O
available	O
at	O
GitHub	B-Application
and	O
pull	O
requests	O
can	O
be	O
submitted	O
there	O
.	O
</s>
<s>
The	O
aim	O
is	O
to	O
build	O
a	O
community	O
of	O
model	O
users	O
and	O
co-developers	O
/	O
contributors	O
to	O
interact	O
with	O
the	O
GitHub	B-Application
repository	O
.	O
</s>
<s>
ANUGA	O
is	O
freely	O
available	O
and	O
distributed	O
under	O
the	O
terms	O
of	O
the	O
GNU	B-License
General	I-License
Public	I-License
Licence	I-License
.	O
</s>
