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1、基于OpenFOAM的船舶與液艙流體晃蕩在波浪中時域耦合運(yùn)動的數(shù)值模擬第16卷第7期船舶力學(xué)Vol,】6No.72012年7月JournalofShipMechanicsJul.2012文章編號:1007-7294(2012)07—07,O—09基于OpenFOAM的船舶與液艙流體晃蕩在波浪中時域耦合運(yùn)動的數(shù)值模擬李裕龍1,朱仁傳1,繆國平1,范菊1,陸志妹2(I上海交通大學(xué)船舶海洋與建筑工程學(xué)院,海洋工程國家重點(diǎn)試驗(yàn)室.上海200240;2中國船舶及海洋工程設(shè)計研究院,上海200011)摘要:波浪中載液船舶運(yùn)動激勵艙內(nèi)液體的晃蕩.艙內(nèi)液體晃蕩產(chǎn)生
2、的沖擊力同時作用在艙壁上,進(jìn)而影響船舶的運(yùn)動姿態(tài)。波浪中船體水動力和時延函數(shù)是在勢流理論范疇下采用切片法和脈沖響應(yīng)函數(shù)方法計算獲得的,液艙內(nèi)液體非線性晃蕩是基于粘性流理論實(shí)時計算模擬,兩者耦合建立了波浪中載液船舶與液艙流體晃蕩耦合的運(yùn)動方程。論文基于開源CFD開發(fā)平臺OpenFOAM,自主開發(fā)實(shí)現(xiàn)了船體運(yùn)動與液艙晃蕩的耦合計算程序。并進(jìn)行了相應(yīng)的數(shù)值模擬計算和驗(yàn)證工作。該方法完整地考慮r波浪、船體和液艙晃蕩之間的耦合作用。并結(jié)合船體內(nèi)外流場特點(diǎn)分別采用了勢流和粘性流理論,具有較高的計算效率。通過數(shù)值模擬計算和模型實(shí)驗(yàn)研究表明,數(shù)值—————————
3、——————————————————————————————————————模擬計算能夠清晰顯現(xiàn)出液艙晃蕩對船體全局運(yùn)動影響。船體運(yùn)動計算結(jié)果與模型實(shí)驗(yàn)結(jié)果吻合良好。關(guān)鍵詞:OpeaFOAM;渡艙晃蕩;脈沖響應(yīng)函效;運(yùn)動藕合;時域模擬中圍分類號:U661.3文獻(xiàn)標(biāo)識碼:ASimulationofshipmotionscoupledwithtanksloshingintimedomainbasedonOpenFOAMLI2Yu-long1,ZHURen-chuanl,MIAOGuo-ping1,FANJul,LUZhi-mei(ITheStateKe
4、yLaboratoryofOceanEngineering,SchoolofNavalArchitecture,OceanandCivilEngineering,ShM一1aiJiaoTongUniversity,Sh,ghai200240。China;2MarineDesignandResearchInstituteofChiim,ShangIlai200011,Chirta)Abstract:Tanksloshinginshipcargoisexcitedbyshipmotions,inthemeantimethesloshingflowind
5、u———————————————————————————————————————————————cesimpactloadontankwall,thenaffectstheshipmotion.WaveforcesactingonshiphuUandtheretardationfunctionaresolvedbyusingstripmethodandanimpulseresponsefunctionmethodbasedonthepotentialtheory,andglobalshipmotionisestablishedcouplingwit
6、hnonlineartanksloshingwhichissimulatedbyviscousflowtheory.BasedontheopensourceCFDdevelopmentplatformOpenFOAM,numericaleal?eulationofshipmotioncoupledwithtanksloshingisachievedandthecorrespondingnumericalsimulationvalidationatecarriedout,Throughthismethod,theinteractionsofwave,
7、shipbodyandtanksloshingcompletelytakenintoconsiderations.Thismethodhasquitehi小e燕cie———————————————————————————————————————————————neyforittakesadvantage0fpaten—tialflowtheoryforouterflowfieldandviscousflowtheoryforinsidetanksloshingrespectively.Numericalsimulationandexperiment
8、alstudiesindicatethatthenumericalresultsofshipmotioncoupledwi