<s>
In	O
computational	O
fluid	O
dynamics	O
,	O
free-surface	B-Application
modelling	I-Application
(	O
FSM	O
)	O
refers	O
to	O
the	O
numerical	B-Algorithm
modelling	O
of	O
a	O
free	O
surface	O
—	O
a	O
freely	O
moving	O
interface	O
between	O
immiscible	O
fluids	O
—	O
in	O
order	O
to	O
be	O
able	O
to	O
track	O
and	O
locate	O
it	O
.	O
</s>
<s>
Common	O
methods	O
used	O
in	O
free	O
surface	O
modelling	O
include	O
the	O
level-set	B-Algorithm
method	I-Algorithm
and	O
the	O
volume	B-Algorithm
of	I-Algorithm
fluid	I-Algorithm
method	I-Algorithm
.	O
</s>
