EM 1110-2-1100 (Part II)
30 Apr 02
II-3-8. Definitions of Symbols
P
Wave number vector (Equation II-3-4)
k
θ
Angle between the plane across which energy is being transmitted and the direction
of wave advance [deg]
Mass density of water (salt water = 1,025 kg/m3 or 2.0 slugs/ft3; fresh water =
ρ
1,000kg/m3 or 1.94 slugs/ft3) [force-time2/length4]
Velocity potential at the free surface [length2/time]
φ
ω
Ω
Wave phase function (Equation II-3-3)
C
Wave celerity [length/time]
Cg
Wave group velocity [length/time]
d
Water depth [length]
E
E(x,y,t,f,θ)
Directional spectrum where x,y represents a location in geographic space, t
represents time, and f,θ represents a particular frequency-direction component
h
Water depth [length]
H
Wave height [length]
Wave number (= 2π/L = 2π/CT) [length-1]
k
Kr
Refraction coefficient [dimensionless]
Ks
Shoaling coefficient [dimensionless]
L
Wave length [length]
-O
The subscript 0 denotes deepwater conditions
T
Wave period [time]
U
Ambient current vector (Equation II-3-30) [length/time]
n
Velocity potential at the free surface [length2/time]
II-3-40
Estimation of Nearshore Waves
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