鸭子荡水库地形前处理及二维水流运动模拟

发布时间：2018-05-05 05:29

本文选题：图像拼接 + SURF算法　；参考：《水利水电科技进展》2017年04期

【摘要】：为了研究鸭子荡水库的二维水流问题,用图像处理方法结合谷歌地球(GE)软件对该水库进行地形的前处理。通过图像拼接、数学形态学和实测资料相结合的方法获取该水库的初始地形,对建立的平面二维RNG k-ε紊流数学模型中的水流模块给出合理的边界条件和初始条件,并采用有限体积法离散方程,通过阵面推进法划分网格,对水库流场和入水口、取水塔附近的断面垂线平均流速进行数值模拟。结果表明,利用图像处理方法结合GE软件能够得到精确、详细的水库复杂地形。在此基础上进行了水库流场数值模拟和关键位置的断面垂线平均流速数值模拟,模拟结果和实测结果较吻合。
[Abstract]:In order to study the two-dimensional flow problem of the Ducketan Reservoir, the pre-processing of the reservoir topography was carried out by using image processing method and Google Earth Geometry software. The initial topography of the reservoir is obtained by combining image splicing, mathematical morphology and measured data. The reasonable boundary conditions and initial conditions are given for the flow module in the plane two-dimensional RNG k- 蔚 turbulent mathematical model. The finite volume method is used to discretize the equations, and the forward front method is used to mesh the flow field and inlet of the reservoir. The average velocity of the vertical cross section near the water tower is simulated numerically. The results show that accurate and detailed reservoir complex terrain can be obtained by using image processing method and GE software. On this basis, the numerical simulation of reservoir flow field and the numerical simulation of the average velocity of the section perpendicular to the key position are carried out. The simulation results are in good agreement with the measured results.
【作者单位】：宁夏大学土木与水利工程学院;宁夏大学信息工程学院;北方民族大学土木工程学院;宁夏大学资源环境学院;
【基金】：国家自然科学基金地区科学基金(61362029) 宁夏高等学校科学研究项目(NGY2015139) 宁夏大学科学研究基金(ZR16018)
【分类号】：TV131.3

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