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Wake (1/3) - Coggle Diagram
Wake (1/3)
Taylor wake
\( w=\dfrac{V-V_A}{V} \)
\( V_A=V(1-w) \)
Represents direct relations
between
wake speed
ship speed
Effective Wake Fraction
Causes
1 - Frictional Drag
folowing current
forward velocity
2 - Streamline flow
increase pressure around stern
streamlines closing in the stern
3 - Wave pattern
Crest
Forward velocit
Trough
Aft velocity
Orbital movement of particle
Difference between
Ship speed
Speed of advance
Wake fraction (Froude wake)
\( w_f=\dfrac{V-V_A}{V_A} \)
\( V_A=\dfrac{V}{1+w_f}\)
Va - wake velocity
Value (w)
Usually Positive
Frictional Drag + Streamline Flow + Crest wave
High speed boats
might be negative
Frictional Drag
Slim streamline and big disc
Wave trough - negative