Figure II-1-7. Variation of the ratios of group and phase velocities to deepwater phase speed using linear theory (Sarpkaya and Isaacson 1981)

Part-II-Chap1
Page Navigation
27

EM 1110-2-1100 (Part II)

30 Apr 02

Figure II-1-7. Variation of the ratios of group and phase velocities to deepwater phase speed using linear

theory (Sarpkaya and Isaacson 1981)

which, upon integration, gives

ρ g H2 L

Ek '

(II-1-54)

(b) Potential energy is that part of the energy resulting from part of the fluid mass being above the

trough: the wave crest. The potential energy per unit length of wave crest for a linear wave is given by

(η % d)2

x%L

ρg

Ep '

(II-1-55)

which, upon integration, gives

Water Wave Mechanics

II-1-27