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Shallow Water Effects (1/2) - Coggle Diagram
Shallow Water Effects (1/2)
Low clearence
below keel
High water veloc
Low pressure
Consequence
Sinkage
Trim
Increased frictional resistance
Also sideways (Canal)
worsen consequences
Limits
Speed
avoid touching bottom
Changes
wave pattern
Surface velocity of waves
Deep water
\( V²= \dfrac {gL_w}{2 \pi} \)
Voyeur Vê RaizGa eLa com 2 Picas é profunda
Shallow water
\( V²= gh \)
\( V= \sqrt{gh} \)
Critical value
É crítico quando Vê e não RaizGahh
Havelock
Wave change (shallow water)
\( V= 0,4\sqrt{gh} \)
Subcritical
Does not Change wave pattern
with shallow water
\( V= \sqrt{gh} \)
Wave of translation
Very high WAVE resistance
\( V= 1,4\sqrt{gh} \)
Supercritical
Only divergent
Critical speeds
happens earlier
when in shallow water
Wave of translation
appears at
lower speeds
\( \sqrt{gh} < 1,77\sqrt{gL_w} \)
