吊艙式推進(jìn)器定常性能計(jì)算方法研究.pdf

1、上海交通大學(xué)碩士學(xué)位論文吊艙式推進(jìn)器定常性能計(jì)算方法研究姓名：陳飛笑申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：船舶與海洋結(jié)構(gòu)物設(shè)計(jì)制造指導(dǎo)教師：楊晨俊2003.2.1ResearchonMethodfPredictingtheSteadyPerfmanceofPoddedPropulssAbstractThedebutofpoddedpropulssacceleratedthedevelopmentofelectricpropulsion.Itcanbe

2、expectedthatthisnewtypeofpropulswillbewidelydevelopedinthenearfuture.Inthethesispropertiesofelectricpropulsionarepresentedatfirst.Thedevelopmentstructuretypesadvantagesresearchapplicationsituationsofpoddedpropulssarethen

3、introducedonthebaseofwhichthenecessityofresearchontheperfmanceofpoddedpropulssisfullyproved.Anumericalmethodbasedonpotentialflowtheyisproposedinthispaperfpredictingthesteadyperfmanceofpoddedpropulss.Poddedpropulsscanbedi

4、videdintothreetypesaccdingtodifferentnumberpositionofpropellersinonesystem.Theyaretractpushertemtypepropulss.Asthefirstthirdtypesareappliedmeoftenthecalculationmethodofthesecondtypeissimilarwiththefirsttheemphasisisputon

5、introductionofcalculationmethodsoftracttemtypepropulss.Thepropellerbladesarecalculatedwithavtexlatticemethodwhilethepodincludingitsstrutwithaboundaryelementmethodfnonliftingbodies.Hydrodynamicinteractionsbetweenthepropel

6、lerthepodaretreatedviaiterativecalculations.Toaccountftheinfluenceofthepodpositionedinthetrailingvtexwakeofpropellerbladesanexistingtrailingvtexwakemodelismodifiedfthefrontpropeller.Inthepresentmethodthefcesactinguponthe

7、podisnotcalculatedyet.Crespondingnumericalprogramshavebeendevelopedwithwhichtheopenwaterperfmanceofapropellerwithoutpodiscalculatedatfirsttoverifytheaccuracyofthepresentmethod.Thenumericalresultsagreeverywellcomparedwith