本文選題：圖像拼接 + SURF算法��； 參考：《水利水電科技進(jìn)展》2017年04期

【摘要】：為了研究鴨子蕩水庫的二維水流問題,用圖像處理方法結(jié)合谷歌地球(GE)軟件對(duì)該水庫進(jìn)行地形的前處理。通過圖像拼接、數(shù)學(xué)形態(tài)學(xué)和實(shí)測(cè)資料相結(jié)合的方法獲取該水庫的初始地形,對(duì)建立的平面二維RNG k-ε紊流數(shù)學(xué)模型中的水流模塊給出合理的邊界條件和初始條件,并采用有限體積法離散方程,通過陣面推進(jìn)法劃分網(wǎng)格,對(duì)水庫流場(chǎng)和入水口、取水塔附近的斷面垂線平均流速進(jìn)行數(shù)值模擬。結(jié)果表明,利用圖像處理方法結(jié)合GE軟件能夠得到精確、詳細(xì)的水庫復(fù)雜地形。在此基礎(chǔ)上進(jìn)行了水庫流場(chǎng)數(shù)值模擬和關(guān)鍵位置的斷面垂線平均流速數(shù)值模擬,模擬結(jié)果和實(shí)測(cè)結(jié)果較吻合。
[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.
【作者單位】： 寧夏大學(xué)土木與水利工程學(xué)院;寧夏大學(xué)信息工程學(xué)院;北方民族大學(xué)土木工程學(xué)院;寧夏大學(xué)資源環(huán)境學(xué)院;
【基金】：國(guó)家自然科學(xué)基金地區(qū)科學(xué)基金(61362029) 寧夏高等學(xué)�？茖W(xué)研究項(xiàng)目(NGY2015139) 寧夏大學(xué)科學(xué)研究基金(ZR16018)
【分類號(hào)】：TV131.3

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