基于GPU的流場可視化技術(shù)研究.pdf

1、華北電力大學(xué)碩士學(xué)位論文摘要流場可視化是科學(xué)計算可視化中最具有挑戰(zhàn)性的研究熱點之一，有著十分廣泛的發(fā)展前景和應(yīng)用領(lǐng)域。本文主要對計算流體力學(xué)流場數(shù)據(jù)可視化的方法進(jìn)行了研究和探索。針對FDS(FireDynamiesSimulat)的計算數(shù)據(jù)，利用openGL圖形庫和oPu(oraphicsProeessingunits，圖形處理器)的特性，對己有的流場可視化技術(shù)中標(biāo)量場和矢量場的一些算法進(jìn)行了改進(jìn)，并給出了相應(yīng)的實例，其結(jié)果與已有算法相

2、比，顯示圖形的速度和效果都有不同程度的改善。改進(jìn)的算法可以用于流體力學(xué)數(shù)據(jù)可視化，提高流場模擬的真實性和可分析性。論文成果具有一定的應(yīng)用價值。關(guān)鍵詞:流場可視化，GPU，標(biāo)量場，矢量場ABSTRACTFlowfieldvisualization15oneofthemostehallenginghotsPotsinvisualizationinseientifiecomPutingresearch，withaverywiderangeof

3、develoPmentProsPectandaPPlicationarea.ThisthesismainlyresearshesanddiseussesthefiowfielddatavisualizationmethodsofeomPutationalfluiddynamies.FortheresultdataealeulatedbyFDS(FireDynamicsSimulat)，thisthesisimProvementssome

4、algithmsofexistingvisualizationtechniquesofscalarfieldandvectorfieldbyusingtheeharaeteristicsofOPenGLGPU(GraPhiesProeessingUnits)，givessomeeresPondingexamPleswhiehshowthattosomeextentthesPeedandeffectofvisualizationareim

5、Proved.TheimProvedalgorithmeanbeusedinflowfieldvisualization，enhaneetheauthentieityandanalyzabilityoftheflowfieldsimulation.TheresearehresulthaseertainPractiealvalue.ChenDaFeng(ComPuterSeienceTeehnology)DireetedbyProLLin

6、BiyingKeyWords:Flowfieldvisualization，GPU，sealarneld，veetorneld華北電力大學(xué)碩士學(xué)位論文4.3云圖...........................................................................................................……184.3.1云圖繪制方法介紹................

7、............................................................……184.3.2單元網(wǎng)格填充法的分析和改進(jìn)...........................................……，......……194.3.3改進(jìn)的單元網(wǎng)格填充法繪制實例....................................................……214.4等值面.

8、......................................................................................................……224.4.1等值面算法.......................................................................................……224.4.2MC算法的分析和

9、改進(jìn)....................................................................……224.4.3基于GPU的等值面繪制算法..........................................................……264.4.4基于GPU的等值面繪制算法繪制實例..........................................……

10、304.5體繪制.......................................................................................................……314.5.1體繪制算法..............................................................................……314.5.2光線投射算法分析

11、..............................................……324.5.3光線投射算法直接體繪制的繪制實例..................................……，...……334.6本章小結(jié).................................................……，...........................................……3

12、4第五章矢量場的可視化........……，......................................……355.1矢量場的可視化概述......................……，..................................................……355.2點圖標(biāo)...........................................................

13、............................................……355.2.1點圖標(biāo)方法........................................................................................……355.2.2點圖標(biāo)方法分析和改進(jìn).......................................................

14、.............……355.2.3實體點圖標(biāo)方法繪制實例................................................................……375.3矢量線.......................................................................................................……385.3.1矢

15、量線方法........................................................................................……3S5.3.2基于數(shù)值積分的流線生成算法........................................................……395.3.3歐拉修正法流線繪制實例..............................

16、..................................……415.4矢量面.......................................................................................................……425.4.1矢量面方法....……，....................................................

17、.........................……425.4.2基于流線的流帶生成算法................................................................……425.4.3基于流線的流帶生成算法繪制實例................................................……445.5粒子及粒子動畫........................…