靜止圓柱尾跡中橫向振蕩翼型繞流的數(shù)值模擬.pdf

1、中國科學技術大學碩士學位論文靜止圓柱尾跡中橫向振蕩翼型繞流的數(shù)值模擬姓名：魏志理申請學位級別：碩士專業(yè)：流體力學指導教師：孫德軍尹協(xié)遠20050601中國科學技術大學碩士學位論文AbstractIt7SainterestingquestionthathydromechanismoffishestakingadvantageofthebeneficialinterferenceofincomingflewAnumericalsimulat

2、ionisperformedtoinvestigatethevortexstructureforcecharacteris，ticsandvortexsheddingfrequencyofanoscillatingfoilplacedinthewakeofacircularcylinderTheobjectiveofthisstudyistevealtheinfluenceoftheincomingwakeOiltheflewchara

3、cteristicoftheoscillatingfoil，andtofindoutthehydromechanismoffishestakingadvantageofthebeneficialinterferenceofincomingflowThemotivationofthisthesiscomesfromthesurprisingcapabilityofpropulsionandmaneuverabilitythatfishes

4、haveThepropulsionoffishesgeneratemainlybytheflappingofthetailThiSpaperconsistsoftwoparts：1Theflowaroundanonoscillating，transverselyoscillatingandrotationallyoscillatingcircularcylinderarehumericallysimulatedbyFLUENTsoftw

5、areThecompareofthecomputingresultswithsomeclassicalliteraturesshowsthereliabilityofthesoftware2Anumericalsimulationisperformedtoinvestigatethevortexstructureforcecharacteristicsandvortexsheddingfrequencyofanoscillatingfo

6、ilplacedinthewakeofacircularcylinderbyFLUENTsoftwareThecomputingresultsarecomparedwiththatofasingletransverselyoscillatingfoilTheobjectiveofthisstudyistevealtheinfluenceoftheincomingwakeontheflowcharacteristicoftheoscill