| Author | Sitang Pilailar |
| Call Number | AIT Thesis no. WM-00-18 |
| Subject(s) | Hydrologic models--Chao Phraya River (Thailand)
|
| 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 Chao Phraya River flows from the northern mountainous area through the central
plain into the Gulf of Thailand. The lower reach of the Chao Phraya River is situated Bangkok
city, is the river estuary, and is therefore subjected to tidal fluctuations. The river has been
used as the receiving water for the discharged wastewater, which are directly discharged from
factories, }dongs and municipal sewers. It causes the deterioration of water quality in river,
especially at the lower reach.
In this study, the hydrodynamic-water quality model RMA is used to study the Chao
Phraya River physical behavior in two dimension. Because RMA model consists of many
modules, the appropriate modules are selected and then the model is calibrated based on the
existing data for the purpose of preparing the model application for fmiher water quality
study, which will be useful for the Chao Phraya River management strategies.
The hydrodynamic-water quality model RMA is the finite element model, which
models on the finite element network of the study area. The finite element network generation
is a time consuming process, but it is very necessary to improve it perfectly. Only the good
finite element network can give the reasonable result. After the finite element network
generation is completed, the model parameters such as the iteration of steady state solution,
and dynamic solution, convergence data, time steps, Mixing coefficient, Surface coefficient,
are adjusted. Then the sensitivity of the model is checked.
The hydrodynamic-water quality model RMA can be used to compute the water level
and velocity of the Chao Phraya River quite well. However, it is needed to verify with other
time period data to improve the accuracy and performance of the water quality modeling. |
| Year | 2001 |
| Type | Thesis |
| School | School of Engineering and Technology (SET) |
| Department | Department of Civil and Infrastucture Engineering (DCIE) |
| Academic Program/FoS | Water Engineering and Management (WM) |
| Chairperson(s) | Luketina, David Andrew ; Suphat Vongvisessomjai |
| Examination Committee(s) | Izumi, Norihiro ;Iida, Toshiaki
|
| Scholarship Donor(s) | The Germany Academic Exchange Service
(DAAD) |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 2001 |