【摘要】：根據(jù)逐漸潰壩模型原理和FLUENT軟件的二次開發(fā)程序,建立兩種逐漸潰壩模型,編制水庫水位隨潰壩洪水下泄而變化的UDF程序和潰口動(dòng)態(tài)變化的UDF程序,對大橋水庫大壩潰決過程和潰壩水流進(jìn)行三維數(shù)值模擬,較準(zhǔn)確地描述了大壩潰決的機(jī)理、潰口發(fā)展過程、壩址處洪水的水位和流量過程線,對比分析了線性模型和沖蝕模型的水位過程、流量過程、水面形態(tài)、流速分布等模擬結(jié)果。分析表明,三維逐漸潰壩模擬能形象而精確地展示潰口的水面形態(tài)和流速場分布。
[Abstract]:According to the principle of progressive dam-break model and the secondary development program of FLUENT software, two kinds of progressive dam-break models are established, and the UDF program of reservoir water level changing with dam-break flood discharge and the UDF program of dynamic change of burst are worked out. Three-dimensional numerical simulation of dam collapse process and dam break flow is carried out, and the mechanism of dam collapse, the development process of break mouth, the process line of flood level and discharge at dam site are described more accurately. The simulation results of water level process, discharge process, water surface shape and velocity distribution are compared between the linear model and the erosion model. The analysis shows that 3D progressive dam break simulation can vividly and accurately display the surface shape and velocity field distribution of the burst.
【作者單位】： 四川大學(xué)水利水電學(xué)院;上�？睖y設(shè)計(jì)研究院有限公司四川分公司;雅礱江流域水電開發(fā)有限公司;
【分類號】：TV122.4

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