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APPENDIX B. SYMBOLS AND NOTATION
fst
- ratio of surface tension to gravity in dispersion relation
fw
- friction factor
f *
- lowest short-wave frequency in spectrum
F
- function
F
- force
F
- force dimension
F
- impact force (vector)
F - friction
Fd ~ drag force
Fe ~ elastic force
Eh ~ hydrodynamic force
Fi
- inertial force
Fi
-
a function of Fourier coefficients and time lag
Fj
- wave board inertial force
Fl ~ second-order instantaneous force per unit width
(piston-type wave board)
Fn
- external force of the nth component
Ft
- Froude number
FR
-
wave board resistive force
Fro
-
total instantaneous force per unit wave board width
(wet on one side)
Etoo ~ total instantaneous force per unit wave board width
(wet on both sides)
F *
- densimetric Froude number
Fe
- elastic compression force (vector)
Fg
- gravitational force (vector)
Fi
- inertial force (vector)
Fpr
- pressure force (vector)
Fp
- viscous force (vector)
Fa
- surface tension force (vector)
g
- gravitational acceleration
G
- function
GF
-
SIWEH groupiness factor
Gi
- Fourier coefficient of the zth linear component
of vertical velocity
Gnrn
~
bound long wave transfer function
G^m
~
higher harmonic wave transfer function