简介:Thepurposeofthispaperistofindsomebettermethodsforcalculatingin-lineforcesonaverticalcircularcylinderandforanalysingthehydrodynamiccoefficientsC_DandC_Minwave-currentco-existingfield.Inthispa-per,inordertocalculatehydrodynamicforces,theauthorstrytofindawayofapplyingagreatnumberofthere-sultsaboutC_DandC_Mforwave-onlyfieldinthecaseofwave-currentco-existingfield,andtheresultsaboutC_DandC_Mobtainedinregularwavesintheeaseofirregularwaves.Suchawaymaybeofsignificanceinengineeringandfurtherresearch.
简介:第1期论维持黄河健康生命的关键技术与调控措…………………施胡春宏陈建国郭庆超陈绪坚(1)关于太湖流域水污染防治策略的思……………………………………考廖文根彭静骆辉煌(6)通江湖泊对长江中下游防洪的作…………………………………………………用陈进黄薇(11)水库防洪预报调度风险分析研…………………………………………究侯召成翟宜峰殷峻暹(16)水轮机固定导叶和活动导叶后的卡门涡频率研………………………究高忠信唐澍梁贺志(22)技术标准与科技研发协调发展的若干思……………………考李贵宝窦以松张征高本虎(27)黄河下游簸箕李灌区田间灌水技术评价与改………进刘钰蔡甲冰白美健L.S.Pereira(32)水
简介:Lid-drivenmixedconvectionhasbeengivenimmenseimportanceduetoitswiderangeofapplications.AT-shapedcavityisintroducedandpertinentparameterscontrollingmixedconvectionphenomenonareanalyzedinthispaper.Water-Al2O3nanofluidisconsideredinsidethecavitytoaugmentheattransferrate.Galerkinweightedresidualmethodoffiniteelementanalysisisappliedforthenumericalsimulations.Numericalsolutionisobtainedfordifferentsolidvolumefractionsofnanofluid(?=0-0.15),Grashofnumbers(Gr=0.1?5000)andReynoldsnumbers(Re=0.31?1000)inlaminarflowregime.Specialattentionisgivenontheanalysisofflowatthepuremixedconvectionregime.ItisfoundthatGrashof,ReynoldsandRichardsonnumbersalongwithsolidvolumefractionofnanofluidhavesignificanteffectonheattransfercharacteristicsinsidethecavity.ResultsarepresentedusingstreamlineandisothermcontoursalongwithrelatedvariationofaverageNusseltnumbersoftheheatedwallandaveragefluidtemperatureinsidethecavity.