University of Twente Student Theses


Hydrological transport model calibration and integration by GUI in 52oNorth/ILWIS OS for the Dinkel River for supporting water quality studies

Yin, Zun (2010) Hydrological transport model calibration and integration by GUI in 52oNorth/ILWIS OS for the Dinkel River for supporting water quality studies.

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Abstract:Fresh water quantity and quality are the crucial components for human life and sustainable development. Hydrological transport model is the emphasis of water resources management and water quality prediction. Water quality models are all based on the hydrologic information of the basin. But the complexity of hydraulic information collection and expensive hydrological softwares strongly influence the development of hydrological modeling. It’s necessary to find a low-cost but high quality way for hydrological modeling study. With the development of geoinformation (GIS) and remote sensing (RS) technique, it is possible to retrieve hydrological parameters from the Digital Elevation Model (DEM). How to integrate and manage hydrological information on a GIS platform for hydrological transport modeling is the main aim of this research. This thesis will apply Full EQuation model (FEQ) in study area for 1-D open channel unsteady flow simulation. From the hydro pre-processing package in Integrated Land and Water Information System (ILWIS Open), river network can be extracted. Hydraulic parameters can be collected by measurement or DEM, which will be used as input for lookup table generation. After the initial and boundary conditions are defined, mass and momentum equations are applied for discharge and water level calculation. The FEQ model will be calibrated by observed data to specify the coefficient of roughness (Manning’s n). The linkage between Hydro Preprocessing and FEQ model is done by a new created Graphic User Interface (GUI) in ILWIS Open during this research, which is able to integrate and manage required data of FEQ model from multi sources. A small basin-Dinkel River, which flows through the urban and rurual area at the boundary of Netherlands and Germany, is chosen as study area. The results show a good match between simulated and observed data. Both Hydro Preprocessing and FEQ are succeed in Dinkel River basin. On the other hand, the GUI is successful created to support water quality and quantity modeling in ILWIS Open. This open source interface enhances the utility of ILWIS Open and offers a free but effective way for water science research. Some reasons for errors are discovered, discussed and summarized during the discussion. In addition, some possible directions for further study are given at the end of this thesis. Keywords Hydrological model, FEQ, FEQUTL, Dinkel, ILWIS, GUI i
Item Type:Essay (Master)
Faculty:ITC: Faculty of Geo-information Science and Earth Observation
Programme:Geoinformation Science and Earth Observation MSc (75014)
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