u,v Velocity components in x- and y-directions 



v Mean velocity of flow, longshore current velocity at x 



v* Shear velocity 



v Current velocity vector 



W£ Value of L 2i - L-j^ for equilibrium 



W r Value of V^ at still-water line 



x,y Coordinates in real space 



x b Width of surf zone 



X Dimensionless coordinate, x/x^ 



Y Dimensionless grain diameter 

 Z Arbitrary variable 



a.. , a„ Coordinates in computational space 



3 Angle beach makes with the horizontal 



Y Breaking index 



6 Difference operator, total depth of D-profile 



Ah Change in bed elevation of a cell 



A Dimensionless position in D-profile 



At Time-step 



Ax, Ay Cell dimensions in real space 



Aa 1 , Aou Cell dimensions in computational space 



e , e Eddy viscosities in x- and y-directions 

 x y 



ri Mean free surface displacement 



Angle of wave propagation 



9 Wave direction in deep water 

 o 



X Deepwater wave length 



u , u Grid expansion coefficients 

 x y r 



v Kinematic viscosity of fluid 



A3 



