  In this report, Mathematical model for generalized nonlinear three
dimensional wave breaking equations was de- veloped analytically using fully
nonlinear extended Boussinesq equations to encompass rotational dynamics in
wave breaking zone. The three dimensional equations for vorticity distributions
are developed from Reynold based stress equations. Vorticity transport
equations are also developed for wave breaking zone. This equations are basic
model tools for numerical simulation of surf zone to explain wave breaking
phenomena. The model reproduces most of the dynamics in the surf zone. Non
linearity for wave height predictions is also shown close to the breaking both
in shoaling as well as surf zone. Keyword Wave breaking, Boussinesq equation,
shallow water, surf zone. PACS : 47.32-y
