Symbol 



V- "^.B' "^b 



()>Q 



T 

 (Tau) 



X' 



bx by 



^sx' ■^sy 



(Phi) 



X 

 (Chi) 



(Psi) 



(Omega) 



ui . 



Definition 



Standard deviation of artificial 

 beach nourishment borrow material 

 in phi units 



Standard deviation of native 

 beach material in phi units 



Bottom shear for an approximately 

 level bottom (eq. 7-131) 



Design shear for channel side 

 slope (eq. 7-132) 



Local boundary shear (eq. 7-126) 



X and y components of surface 

 wind stress 



X and y components of surface 

 wind stress 



Velocity potential 



#Angle between wave direction 

 and plane across which energy 

 is being transmitted (Ch. 2) 



• Angle of incident wave to gap 

 in breakwater 



• Latitude of location 



• Grain size units ($ = -log d 

 (mm)) 



• Internal angle of friction of 

 earthfill or other material 



• Angle of riprap repose 

 (eq. 7-132) 



Phase of the j wave at time 

 t = (eq. 3-11) 



Coefficient for calculation of 

 maximum total force on piles 

 (eq. 7-42) 



Particle size in phi units of the 

 X percentile in sediment sample 



Wave reflection coefficient 

 (eqs. 2-27, 7-72) 



Effects of stability of air 

 column on wind velocity 

 (eq. 3-25) 



Wave angular frequency 

 • Earth angular frequency 



Frequency of the j wave at time 

 t = (eq. 3-11) 



Dimension 



f/t 



F/L' 

 F/L^ 



F/L 



F/L^ 

 2 



^-1 



Example Units 



Metric 



N/m 



N/m 



N/m^ 



N/m 



N/m 



2, 

 m /s 



English 



phi 

 phi 



lb/ft'' 



lb/ft 

 Ib/ft^ 



lb/ft 



lb/ft 

 ft^/s 



deg 



deg 

 deg 



phi 



deg 



deg 



deg 



phi 



rad/s 

 rad/s, rad/hr 



rad/s 



B21 



