This study contributes to the understanding of the mechanisms and
processes of sand bypassing in artificial and non-artificial
coastal environments through a numerical modelling study. Sand
bypassing processes in general is a relevant but poorly understood
topic. This study attempts to link the theory and physics of sand
bypassing processes which is significantly important in definition
of coastal sedimentary budget. The main question is how can we
model sand bypassing processes and whether the modelled sand
bypassing processes represent the actual sand bypassing processes.
In this study, it is shown that a process-based model can be used
to simulate the processes of sand bypassing around groyne and
headland structures. Both hypothetical and real case studies were
successfully developed. Results comparisons were made among
analytical models, empirical models and field data measurements. In
general, the process-based model can produce reasonable results. In
summary, through numerical modelling this study reveals the
importance of understanding coastal processes and the role of
geological controls in governing headland sand bypassing processes
and embayed beach morphodynamics. The morphological model developed
in this study is useful to increase understanding of the natural
sand distribution patterns due to combination of engineering
efforts and natural coastal processes.
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