VALIDASI MODEL NUMERIK ARUS SEJAJAR PANTAI DENGAN MODEL ANALITIK LONGUET-HIGGINS
ABSTRACT: A numerical
model wave induced
current known as
longshore current was
generated by means
of finite different explicit scheme
approximation. The numerical
model was then
derived by means
of hydrodynamic equation discretization. The
forward and central
different were applied
to time and
space derivation, respectively.
Meanwhile, analytical model was derived by means of Longuet-Higgins
analytical model. Variations of incident
wave from 20o-70o were implemented for
both models. The
numerical model was validated
by means of
Longuet-Higgins analytical model (1970). The result of simulated wave
induced current model indicated that maximum velocity is approximately
consistent to Longuet-Higgins analytical model with the highest and least
differences of 3.4 % and 1.4 % or mean differences of 1.9 % for the six
incident wave scenarios.
Keywords: Longshore current,
numerical model, analytical model
Penulis: Ichsan Setiawan
Kode Jurnal: jptsipildd090014
