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《扭曲舵水動(dòng)力性能的研究》由會(huì)員上傳分享，免費(fèi)在線閱讀，更多相關(guān)內(nèi)容在學(xué)術(shù)論文-天天文庫(kù)。
1、扭曲舵的水動(dòng)力性能研究摘要近些年來(lái)，國(guó)際能源局勢(shì)越來(lái)越嚴(yán)重，節(jié)能已經(jīng)成為我國(guó)經(jīng)濟(jì)發(fā)展中的長(zhǎng)期戰(zhàn)略任務(wù)，船舶作為當(dāng)今的主要運(yùn)輸工具，其節(jié)能技術(shù)備受關(guān)注。節(jié)能附體因成本較低，安裝簡(jiǎn)便等優(yōu)點(diǎn)，已得到廣泛使用。扭曲舵是一種新型節(jié)能附體，可通過(guò)扭曲舵葉剖面束適應(yīng)螺旋槳尾流，以進(jìn)一步提高推進(jìn)效率。本文對(duì)扭曲舵進(jìn)行了研究，主要的工作有：介紹了CFD方法的基本理論，并用CFD軟件FLUENT計(jì)算了敞水槳和槳舵干擾的水動(dòng)力性能，與實(shí)驗(yàn)值進(jìn)行了比較，驗(yàn)證了CFD方法定常和非定常計(jì)算的有效性，并對(duì)槳舵干擾的流場(chǎng)特性進(jìn)行了研究；介紹了基于面元法的螺旋槳和槳舵干擾問(wèn)題求解方法，以此方法預(yù)報(bào)了敞
2、水槳和槳一舵系統(tǒng)性能，計(jì)算值與實(shí)驗(yàn)值及CFD結(jié)果吻合良好，并研究了舵敝水和在槳后情況的舵前流場(chǎng)；根據(jù)扭曲舵的工作原理和螺旋槳后的流場(chǎng)特性，對(duì)扭曲舵進(jìn)行了設(shè)計(jì)和建模，分別應(yīng)用CFD方法和面元法對(duì)槳與扭曲舵相互干擾水動(dòng)力性能進(jìn)行了計(jì)算與比較。同時(shí)，研究了扭曲舵和普通舵在螺旋槳后的空泡性能。結(jié)果表明，扭曲舵的節(jié)能效果較普通舵為佳，且具有較好的空泡性能。關(guān)鍵詞：節(jié)能；扭曲舵；螺旋槳；水動(dòng)力性能；空泡手H曲舵的水動(dòng)力性能研究AbstractRecently，withtheinternationalenergysourceprobleminseriouslack，Energy-s
3、avingbecomesalong—rangestrategicmissionintheeconomydevelopment．Shipistheoneofthemaintransports，whoseenergy—savingtechnologieshavebeenpaidmoreattention．Withlowcost，easyinstallationandetc，Energy—savingappendagesarewidelyapplied．Anewenergy-savingappendage---skewrudderwasstudiedinthethesisw
4、hichcanimprovepropeleffectbyskewingtheprofileofruddertofitthevelocityfieldafterpropeller．Themaincontentsofthethesisareasfollows：ThebasictheoryofCFDmethodwasintroduced．ThesteadyandunsteadyperformancesofopenpropellerandpropellerrudderinterferencewerecalculatedbyFLUENT．Comparingwithtestval
5、ues，themethodwasconfirmed．Thevelocityfieldofpropellerandruddersystemwasstudiedatthesametime；Surfacepanelmethodwasintroducedtosolvepropellerandpropeller-ruddersystemproblem．OpenpropellerperformanceandpropellerrudderinterferenceperformanceⅥ撇calculatedagainbythismethod．Thecomputedresultsag
6、reefairlywell、柝tllCFDresultsandtheexperimentaldata．ThevelocityfieldofopenrudderandrudderafterpropellerⅥ陀．reanalyzed；Accordingtotheworkingprincipleofskewrudderandthevelocityfieldafterpropeller，skewruddermodelWasdesigned．TheCFDmethodandsurfacepanelmethodwereappliedtopredictthehydrodynamic
7、performanceofpropellerandskewruddersystem．Meanwhile，thecavitationperformanceofnormalrudderandskewrudderwerestudied．Theoreticalstudieshaveshownthattheenergy—savingeffectandcavitationperformanceofskewrudderarebetterthannormalrudder．Keywords：energy-saving；skewrudder；propeller；hydr
