Use the wave equation?
d2z / dt2 = c2 ( (d2/z / dx2) + (d2z / dy2) ) - (u(dz / dt))
(note: the 2s should be in superscript of course)
where
u is the non-negative constant representing the viscosity of the fluid
x is the horizontal axis
z is the vertical axis
d is dot notation
t is the tension acting in a tangential direction
c is velocity; and
y is the third spatial direction
Hope thats helpful. If you need more information on the wave equation, the internet has lots of good resources on it. Its famous!
Phil
What do you mean, bears aren't supposed to wear hats and a tie?
