| Author | Haque, A. M. Aminul |
| Call Number | AIT Thesis no. WA-91-6 |
| Subject(s) | Waves--Mathematical models
|
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of
Master of Engineering, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Abstract | The prediction of nearshore wave parameters from the lrnowledge of deepwater
wave informations has immense practical applications; specially for complicated
bottom topography and structural geometry, for which wave deformation due to
combined refraction, diffraction, reflection and breal<ing exists.
A numerical model is presented to generate wave transformation in those
bodies of water where bathymetrlc effects are extremely important and where
conventional methods such as ray tracing or those using energy equations can
not worl< properly. The technique presented is based upon the first model to
locate the breal<erline presented by Numano in Japan in 1988. This model was
developed on the theoretical basis of time dependent mild slope equations and
the prime purpose was to locate the breal<erline. The model did not take into
account the oblique incident wave . This model has been modified and extended
to apply in larger and complex area of interest to locate breal<erline, generate
breal<er characteristics, estimate wave-induced longshore sediment transport from
the directional energy flux distributions, predict (approxima t ely) wave height
beyond surfzone and calculate the magnitude and direction of near bottom orbital
velocity in the study area without tal<ing into account the dissipation due to
brealcing as well as bottom friction.
The model has been applied to real world problem of Bang Tao Bay in Phulcet,
Bangkok, Thailand, to investigate the effect of offshore tin mining which created
deep holes nearshore . The results obtained draw t he conclusion that the flow
pattern is greatly affected due to refraction and reflection. Greater energy flux
as well as steeper energy gradient are generated causing severe erosion. |
| Year | 1991 |
| Type | Thesis |
| School | School of Engineering and Technology (SET) |
| Department | Other Field of Studies (No Department) |
| Academic Program/FoS | Water Resources Research Engineering (WA) |
| Chairperson(s) | Suphat Vongvisessomjai |
| Examination Committee(s) | Tawatchai Tingsanchali ;Shibayama, Tomoya
|
| Scholarship Donor(s) | The Government of the Netherlands |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1991 |
