measured over a grid (see Figure 50) at a water depth equal to about half the
maximum transition height (i.e., 10 mm (0.39 in.)).
Figure 50. Experiment setup for harbor dredging planform configuration
Table 9
Scale Ratios for Dredge Transition Model
Scale
Scale Value
Model Equivalence
NX = 1,200
100 ft ≈ 1 in.
Horizontal scale
NZ = 240
Vertical scale
20 ft = 1 in.
NV =
NZ = 15.5
Velocity scale
1.55 m/sec = 10 cm/sec
NQ = NX NZ3/2 = 4,461,680
Discharge scale
7,585 cu m/sec = 1.7 L/sec
68
Chapter 6 Impact of Dredging Planform
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