發(fā)布時(shí)間：2018-01-16 13:15

  本文關(guān)鍵詞：海浪浪花與船行波建模繪制技術(shù)研究與實(shí)現(xiàn)　出處：《國(guó)防科學(xué)技術(shù)大學(xué)》2014年碩士論文　論文類(lèi)型：學(xué)位論文

  更多相關(guān)文章： Osg Ocean 船行波 海浪浪花 元胞自動(dòng)機(jī)

【摘要】：在虛擬海洋場(chǎng)景中人們研究較多的是海面建模,它主要對(duì)海面的波動(dòng)現(xiàn)象進(jìn)行模擬仿真,然而海洋場(chǎng)景中的一些特效現(xiàn)象如海浪浪花、船行波以及運(yùn)動(dòng)艦船周?chē)�的浪花等�?duì)虛擬海洋場(chǎng)景的真實(shí)性有較大影響,因而對(duì)這些海洋場(chǎng)景特效現(xiàn)象的模擬仿真成為逼真的海洋場(chǎng)景模擬的重要研究?jī)?nèi)容。本文針對(duì)已有海浪浪花和艦船軌跡模擬方法不足和問(wèn)題,研究探討新的三維船行波和海浪浪花建模方法,并基于Osg Ocean海浪模擬開(kāi)源平臺(tái)完成場(chǎng)景設(shè)計(jì)實(shí)現(xiàn)。論文的主要工作和研究成果如下:1、提出一種基于開(kāi)爾文波的用于三維船行波建模與模擬方法。該方法以定性特征與船行波特征一致的開(kāi)爾文波理論為基礎(chǔ),結(jié)合海面風(fēng)速、風(fēng)向和艦船航向等因素的影響,建立三維船行波模型,計(jì)算船行軌跡中位于波峰線(xiàn)上的軌跡點(diǎn)和波峰線(xiàn)間的軌跡點(diǎn)的坐標(biāo),實(shí)現(xiàn)不同船型和船速條件的自適應(yīng)三維船行波模擬。實(shí)驗(yàn)結(jié)果表明,所提出的建模與模擬方法可較真實(shí)的表現(xiàn)艦船航行兩側(cè)所產(chǎn)生的船行波。2、基于元胞自動(dòng)機(jī)理論和多粒子模型,本文提出一種艦船運(yùn)動(dòng)浪花特效模擬方法。該方法根據(jù)艦船運(yùn)動(dòng)與水體作用產(chǎn)生浪花的機(jī)理和特點(diǎn),考慮了艦船速度對(duì)艦船不同位置點(diǎn)海浪浪花形態(tài)的影響,基于元胞自動(dòng)機(jī)理論和多粒子模型對(duì)海浪浪花場(chǎng)景特效進(jìn)行建模和模擬。實(shí)驗(yàn)結(jié)果表明,所提出的方法可自動(dòng)生成較真實(shí)的運(yùn)動(dòng)艦船頭浪、側(cè)浪和艉浪浪花特效。3、在深入分析海浪模擬開(kāi)源軟件平臺(tái)Osg Ocean的軟件模塊組成結(jié)構(gòu)和程序流程基礎(chǔ)上,基于Osg Ocean設(shè)計(jì)實(shí)現(xiàn)了三維船行波模擬軟件模塊和艦船運(yùn)動(dòng)浪花特效模擬軟件模塊,驗(yàn)證了所提出的三維船行波模擬方法和海浪浪花特效模擬方法的正確性和有效性。
[Abstract]:In the virtual ocean scene more people study is surface modeling, simulation which fluctuation on the surface of the sea, but some of the effects of ocean scene phenomena such as wave waves, have great influence around the ship wave and the motion of ship waves and authenticity of virtual ocean scene simulation, and Simulation of these ocean scene the phenomenon has become an important research content of realistic simulation of ocean scene. According to the existing ocean waves and ship trajectory simulation method of deficiencies and problems, study new three-dimensional ship wave and wave wave modeling method, Osg and Ocean wave simulation design based on open source platform to complete the scene. The main work and research results are as follows: 1 Kelvin, put forward a kind of wave for three-dimensional ship wave modeling and simulation method based on this paper. By qualitative features and characteristics of the ship wave Kelvin wave theory, combined with the sea surface wind speed, wind direction and ship heading and other factors, the establishment of three-dimensional ship wave model, to calculate the coordinates of track points located on the crest line and the crest line between the trajectory of ship trajectory in different speed conditions, ship and adaptive three-dimensional ship wave simulation. The experimental results show that the the proposed modeling, and simulation method can be a real performance of ship ship wave.2 on both sides of the cellular automaton theory and multi particle model based on, this paper proposes a ship motion simulation method. The effects of spray method of generating mechanism and characteristics of spray according to the ship motion and water effect, considering the influence of ship the speed of ship waves waves from different positions of morphology, cellular automaton theory and multi particle model for modeling and Simulation of sea waves based on scene. Experimental results show that the The proposed method can automatically generate a real head moving ship wave, side wave and stern wave waves effects.3 simulation software module, open source software platform Osg Ocean in depth analysis of wave component based structure and program flow, Osg Ocean design and implementation of three-dimensional ship wave simulation software module and ship motion simulation software module based on the waves and verify the correctness and effectiveness of the proposed three-dimensional ship wave simulation method and the effects of spray simulation method.

【學(xué)位授予單位】：國(guó)防科學(xué)技術(shù)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類(lèi)號(hào)】：P731.2;TP391.9

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