Hybrid Hydraulic Modeling Approach in the Process of Hydropower Plant Design
The paper presents a hybrid approach to the hydraulic modeling of the run-of-river hydropower plant on the Sava River in the Republic of Slovenia, where a physical model and a 2D mathematical model are combined. The objectives of hydraulic modeling are, at first, to define the current retention capacity, run-off regime and flood hazard situation in the discussed area. In the second phase, the objectives are to optimally design the hydropower plant, including full infrastructure, with the emphasis on keeping the same run-off regime downstream and to mitigate the present flood and erosion hazards. The main reasons for choosing hydraulic modeling with a hybrid approach lies in the complexity of this high flood-prone area which is defined by complex morphological, hydrological and hydraulic factors and it is burdened with different anthropogenic land use and activities. In addition, a nuclear power station with cooling water demands is also situated in the influential area of the planned hydropower plant and a strict agreement on conservation of the run-off flow regime with the downstream neighboring Republic of Croatia has to be fulfilled. The hybrid hydraulic model approach combines benefits from both hydraulic modeling approaches. A physical model can still more precisely assure data where the influence of turbulence and other 3D flow phenomena are significant. On the other side, a mathematical model upgrades the physical model in the phase where significant number of analysis, planning changes and data presentations for decision support occur. This two-model approach also allows mutual comparison of results in the phase of calibration and verification of both models which ensures significant improvement of the confidence band of measured or calculated quantities. Because of the uncertainties related to discharge and water level data and the above mentioned complexity of the area in the process of model calibration and verification a brief sensitivity analysis of all significant parameters was conducted.
Saso Santl Gorazd Novak Gasper Rak Franci Steinman
Chair of Fluid Mechanics, Faculty of Civil and Geodetic Engineering,University of Ljubljana, Sloveni Institute for hydraulic research-hydraulic laboratory,Hajdrihova 28, 1000 Ljubljana, Slovenia
国际会议
南京
英文
144-151
2010-09-13（万方平台首次上网日期，不代表论文的发表时间）