本文選題：數(shù)字流域　切入點(diǎn)：三維可視化　出處：《華北電力大學(xué)(北京)》2017年碩士論文　論文類型：學(xué)位論文

【摘要】：數(shù)字流域研究作為水利信息化的前沿研究領(lǐng)域,為流域的規(guī)劃管理與社會(huì)經(jīng)濟(jì)宏觀決策提供理論與技術(shù)支持,對(duì)推動(dòng)流域管理現(xiàn)代化、促進(jìn)水利行業(yè)的發(fā)展具有重要作用。本文基于GIS與虛擬現(xiàn)實(shí)技術(shù),開發(fā)了三維數(shù)字流域平臺(tái),重點(diǎn)研究了數(shù)字流域框架體系及水流標(biāo)量場(chǎng)可視化、矢量場(chǎng)可視化、水體視覺模擬技術(shù)及組合條件繪制等水流可視化方法,實(shí)現(xiàn)了專業(yè)應(yīng)用模型與數(shù)字仿真平臺(tái)在通航管理、流域防洪體系方面的應(yīng)用,主要工作和研究成果如下:(1)提出了三維數(shù)字流域平臺(tái)開發(fā)的總體框架,研究了數(shù)字流域三維空間數(shù)據(jù)可視化建模與存儲(chǔ)的技術(shù)路線�；贠SG三維圖形引擎與osgEarth可視化工具,采用LOD動(dòng)態(tài)分頁(yè)機(jī)制,提出了空間數(shù)據(jù)快速建模方法,建立了三維數(shù)字流域地形與地物模型。開發(fā)了三維數(shù)字流域平臺(tái)可視化模塊,實(shí)現(xiàn)了大規(guī)模流域空間數(shù)據(jù)的加載與渲染,優(yōu)化了平臺(tái)的可視化性能。(2)研究了數(shù)字流域仿真中水流動(dòng)態(tài)可視化方法。在水流科學(xué)可視化方面,通過著色器編程,應(yīng)用GPU的圖形渲染管線,實(shí)現(xiàn)了水深等值面、LIC矢量場(chǎng)、IBFV矢量場(chǎng)、Arrow矢量場(chǎng)等水流可視化效果的高度并行化渲染。應(yīng)用RTT渲染到紋理技術(shù),對(duì)水流數(shù)據(jù)進(jìn)行預(yù)處理,加快了GPU對(duì)水流數(shù)據(jù)的提取速度,提高了水流動(dòng)態(tài)模擬的顯示性能。在真實(shí)感水體仿真方面,建立了河流的折射與反射模型,基于有向法線紋理貼圖方法,根據(jù)水動(dòng)力學(xué)模型的計(jì)算結(jié)果,模擬真實(shí)河流的流動(dòng)效果,表現(xiàn)了河流的流速分布特征。應(yīng)用Gerstner波疊加方法,實(shí)現(xiàn)了海洋水體的模擬效果。開發(fā)了水流可視化集成接口,實(shí)現(xiàn)了基于組合條件的水流信息可視化,優(yōu)化了水流模型在三維數(shù)字流域平臺(tái)中的顯示效果。(3)基于開發(fā)的三維數(shù)字流域平臺(tái),與具體專業(yè)應(yīng)用相結(jié)合,實(shí)現(xiàn)了平臺(tái)在通航管理與防洪減災(zāi)方面的應(yīng)用。在江津至重慶段的通航管理中,通過監(jiān)測(cè)、存儲(chǔ)、計(jì)算、顯示的方式對(duì)船舶通航進(jìn)行管理與預(yù)警,實(shí)現(xiàn)了航道綜合信息的查詢與顯示、航道實(shí)時(shí)水流信息的監(jiān)測(cè)與模擬、船舶動(dòng)態(tài)信息的查詢與顯示等功能,為船舶通航提供更加直觀、豐富的航道信息與實(shí)時(shí)水流信息,有效提高了航道的通航效率和通航安全度。在哈爾濱堤防工程的洪水淹沒模擬中,建立了以三角網(wǎng)為拓?fù)潢P(guān)系的地形網(wǎng)格,采用左右三角形法搜索淹沒面進(jìn)行洪水有源淹沒的模擬,實(shí)現(xiàn)了洪水方案模擬、防洪預(yù)案演示等功能,為流域防洪減災(zāi)決策提供了支撐工具。
[Abstract]:As the frontier research field of water conservancy information, digital watershed research provides theoretical and technical support for watershed planning and management, and promotes the modernization of watershed management. It is important to promote the development of water conservancy industry. Based on the technology of GIS and virtual reality, a 3D digital watershed platform is developed in this paper. The visualization of the digital watershed frame system and the visualization of scalar field and vector field of water flow are studied emphatically. The visual simulation technology of water body and the method of water flow visualization such as combination condition drawing have realized the application of professional application model and digital simulation platform in navigation management and flood control system of river basin. The main work and research results are as follows: (1) the overall framework of 3D digital watershed platform development is proposed, and the technical route of 3D spatial data visualization modeling and storage in digital watershed is studied. Based on OSG 3D graphics engine and osgEarth visualization tool, Based on the dynamic paging mechanism of LOD, the fast modeling method of spatial data is proposed, and the 3D digital watershed terrain and feature model is established. The visualization module of 3D digital watershed platform is developed to realize the loading and rendering of large-scale watershed spatial data. The visualization performance of the platform is optimized. The visualization method of water flow in digital watershed simulation is studied. In the aspect of visualization of water flow science, the graphical rendering pipeline of GPU is applied to the visualization of water flow science by means of colorimeter programming. The high parallelization rendering of the visualization effect of water flow such as IBFV vector field and row vector field is realized on the water depth isosurface. The RTT rendering to texture technology is used to preprocess the water flow data, which speeds up the extraction speed of the water flow data by GPU. In the aspect of realistic water body simulation, the refraction and reflection model of the river is established. Based on the directed normal texture mapping method, according to the calculation results of the hydrodynamic model, The flow effect of real river is simulated, and the characteristics of velocity distribution of river are represented. The simulation effect of ocean water is realized by using Gerstner wave superposition method. The integrated interface of water flow visualization is developed. The visualization of flow information based on combination condition is realized, and the display effect of flow model in 3D digital watershed platform is optimized. The application of the platform in navigation management and flood control and disaster reduction is realized. In the navigation management between Jiang Jin and Chongqing, ship navigation is managed and early warning through monitoring, storage, calculation and display. The functions of inquiring and displaying the comprehensive information of the waterway, monitoring and simulating the real-time flow information of the waterway, querying and displaying the dynamic information of the ship are realized, which provide more visual and rich waterway information and real-time flow information for the navigation of the ship. The navigation efficiency and safety degree of navigation channel are improved effectively. In the flood flood simulation of Harbin levee project, the terrain grid with triangle network as topological relation is established. The method of left and right triangle is used to simulate the flood active submergence. The functions of flood scheme simulation, flood prevention plan demonstration and so on are realized, which provides a supporting tool for flood control and disaster reduction decision.
【學(xué)位授予單位】：華北電力大學(xué)(北京)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：P208;TV21

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 鐘桂良;邱向東;尹習(xí)雙;;淺議大型數(shù)字流域可視化集成平臺(tái)建設(shè)項(xiàng)目管理[J];水電站設(shè)計(jì);2016年02期

2 陳靜;袁思佳;曾方敏;;三維虛擬地球中有源洪水淹沒分析算法[J];武漢大學(xué)學(xué)報(bào)(信息科學(xué)版);2014年04期

3 周陽;佘江峰;唐一鳴;;基于WebGL的三維數(shù)字水利展示系統(tǒng)研究[J];測(cè)繪與空間地理信息;2014年03期

4 方貴盛;潘志庚;;水虛擬仿真技術(shù)研究進(jìn)展[J];系統(tǒng)仿真學(xué)報(bào);2013年09期

5 葉偉;榮榕;鄧長(zhǎng)濤;申晨;;數(shù)字流域三維虛擬仿真系統(tǒng)綜述[J];山西水利科技;2013年02期

6 方貴盛;潘志庚;;水體虛擬仿真與應(yīng)用綜述[J];計(jì)算機(jī)仿真;2012年10期

7 趙立坤;郭書英;;基于水管理對(duì)象的數(shù)字流域頂層設(shè)計(jì)技術(shù)方法研究[J];中國(guó)水利;2012年14期

8 張尚弘;易雨君;江巖;冶運(yùn)濤;;基于紋理的流場(chǎng)動(dòng)態(tài)可視化平臺(tái)開發(fā)[J];水力發(fā)電學(xué)報(bào);2011年05期

9 張尚弘;江巖;樂世華;;流域虛擬仿真系統(tǒng)實(shí)時(shí)交互技術(shù)研究[J];應(yīng)用基礎(chǔ)與工程科學(xué)學(xué)報(bào);2011年05期

10 譚德寶;;數(shù)字流域技術(shù)在流域現(xiàn)代化管理中的應(yīng)用[J];長(zhǎng)江科學(xué)院院報(bào);2011年10期

相關(guān)博士學(xué)位論文 前2條

1 潘立武;虛擬流域技術(shù)及其在數(shù)字湖泊工程中的應(yīng)用[D];華中科技大學(xué);2014年

2 姚仕明;三峽葛洲壩通航水流數(shù)值模擬及航運(yùn)調(diào)度系統(tǒng)研究[D];清華大學(xué);2006年

相關(guān)碩士學(xué)位論文 前3條

1 邊茂松;潰壩洪水演進(jìn)的三維可視化系統(tǒng)研究[D];大連理工大學(xué);2015年

2 趙博華;三維數(shù)字航道平臺(tái)開發(fā)關(guān)鍵技術(shù)研究[D];華北電力大學(xué);2015年

3 于麗娜;三維空間分析技術(shù)在數(shù)字航道中的應(yīng)用研究[D];南京理工大學(xué);2012年

，

本文編號(hào)：1595267