Influence of tank's length

Water level on the left wall for several tank's length

- L=1.5 m                                                                                                 - L=2m

- L=2.5 m                                                                                                 - L=3m

- L=3.5 m

The results fit the theretical dissipation time for most of tank's lengths. However, for L=1.5m, Fluent results does not match the theory. For this case the length (L) and the height (H) are almost the same so the long waves hypothesis is no longer valid.

Waves dissipation for several tank's length (exponential envelopes)

Smaller is the tank,  briefer is the sloshing.