Symbol 



v' 



(K). 



(U 



p 



Ap 



Definition Dimension 



Dimensionless surface displacement, 

 defined as i?/d 



Surface displacement from undisturbed L 



water level along the input line 



Dimensionless surface displacement from - 



undisturbed water level along the input 

 Une, defined as T?j/dj, 



Dimensionless depth, defined as d/d^. 



Angular displacement of pendulum from 

 the vertical 



•Angle of bottom slope seaward of 

 structure, measured from the 

 horizontal (Eq 6-1 through 6-6) 



•Angle of inclination of the resultant 

 force, measured from the horizontal 

 (Fig. 6-16) 



•Angle of rotation of parapet about the 

 landside toe (Fig. 6-40) 



♦Angle of anchor chain from bottom, 

 measured from the horizontal (Fig. 6-52) 



Wavelength L 



•Horizontal Imear scale (Section V only) 



Wavelength at which the velocity of a L 



surface tension wave is a minimum 



Dynamic viscosity FT/L 



•Vertical linear scale (Section V only) 



Kinematic viscosity L /T 



Characteristic Unear dimension of armor L 



unit surface roughness 



Refers to the Buckingham theorem (usually 



referred to as the pi (tt) theorem) in which 



■n = f(7rj, 172,— '^n-k) ^"*^ '^1' ^2'^'-''- ^^^ 

 dimensionless products 



Density 



Density differential 



Surface tension 



Dimensionless time, defined as t/T^ 



Shields parameter - 



Dimensionless velocity potential, defined 

 as <t>TJLl 



Velocity potential (Eq 2-29 through 2-35) L^/T 



•Reads "function of" (Eq 2-22) 



•Latitude (Eq 3-23) 



Unit 



FT^/L'* 

 FT^/L^ 



F/L 



radians 

 degrees 



degrees 



radians 



degrees 



ft 



ft 



Ib-sec/ft^ 



ft^/sec 

 ft 



Ib-sec^/ft"* 



Ib-sec^/ft"* 



lb/ft 



ft^/sec 

 degrees 



529 



