Table 2 Model scale set based on the Froude criterion
Scale for | \({\text{F}}_{{\text{r}}}\) |
|---|---|
Inertial force/gravity | \({\text{v}}^{{2}} /{\text{Lg}}\) |
Length \({\uplambda }_{{\text{L}}}\) | \({\uplambda }_{{\text{L}}} { = 20}\) |
Time \({\uplambda }_{{\text{t}}}\) | \({\uplambda }_{{\text{L}}}^{{\frac{{1}}{{2}}}} { = 4}{\text{.47}}\) |
Flow velocity \({\uplambda }_{{\text{v}}}\) | \({\uplambda }_{{\text{L}}}^{{\frac{{1}}{{2}}}} { = 4}{\text{.47}}\) |
Flow quantity \({\uplambda }_{{\text{Q}}}\) | \({\uplambda }_{{\text{L}}}^{{\frac{{5}}{{2}}}} { = 1788}{\text{.85}}\) |
Pressure \({\uplambda }_{{\text{p}}}\) | \({\uplambda }_{{\text{L}}} { = 20}\) |
Force \({\uplambda }_{{\text{F}}}\) | \({\uplambda }_{{\uprho }} {\uplambda }_{{\text{L}}}^{{3}} { = 8000}\) |
Power \({\uplambda }_{{\text{P}}}\) | \({\uplambda }_{{\uprho }} {\uplambda }_{{\text{L}}}^{{\frac{{7}}{{2}}}} { = 35777}\) |
Roughness \({\uplambda }_{n}\) | \({\uplambda }_{{\text{L}}}^{{\frac{{1}}{{6}}}} { = 1}{\text{.65}}\) |