254 Computational Modelling in Hydraulic and Coastal Engineering
3. Change the location of the air-bubble point source from x o = 14.5 m,
y o = 1.5 m to x o = 4.5 m, y o = 1.5 m.
4. Change the bubble diameter from 0.002 m to 0.001 m.
5. Use two air-bubble point sources of same characteristics located at
x o  = 7.5 m, y o = 1.5 m and x o = 22.5 m, y o = 1.5).
Run the simulations, compare the results and comment on the behaviour of
the induced flow circulation and the plume of rising bubbles.