x distance,xcoordinate
y flow depth, ycoordinate
y stilling basin depth
y depth of centroid of section A
yc critical depth
ym mean depth (A/B)
ys maximum scour (local) depth, turbine setting
z depth, elevation relative to datum, zcoordinate
angle, constant, energy (Coriolis) coefficient, (seismic)
coefficient, wave crest angle
angle, momentum (Boussinesq) coefficient, slope, angle
specific (unit) weight (pg)
boundary layer thickness, deflection settlement
laminar sublayer thickness∆ relative density of sediment in water (( (^) s )/ )
strain
area reduction coefficient, efficiency
angle, velocity coefficient
Darcy–Weisbach friction factor, flownet scale transform factor
μ dynamic viscosity of water
v kinematic viscosity of water, Poisson ratio
coefficient (head loss), parameter
density of water
(^) s density of sediment particle
cavitation number, conveyance ratio, safety coefficient, stress,
surface tension
1,2,3 major, intermediate and minor principal stresses
effective stress, safety coefficient
shear stress, time interval
c critical shear stress
0 boundary shear stress
angle of shearing resistance or internal friction, function,
sediment transport parameter, speed factor
flow parameter
angular velocity (radians s^1 )
xxiv MAIN SYMBOLS