简介：AnanalysisispresentedwithmagnetohydrodynamicsnaturalconvectiveflowofaviscousNewtonianfluidsaturatedporousmediuminaverticalslot.TheflowintheporousmediahasbeenmodeledusingtheBrinkmanmodel.Thefully-developedtwo-dimensionalflowfromcappedtoopenendsisconsideredforwhichacontinuumofsolutionsisobtained.Theinfluenceofpertinentparametersontheflowisdelineatedandappropriateconclusionsaredrawn.Theasymptoticbehaviourandthevolumefluxareanalyzedandincorporatedgraphicallyforthethree-parameterfamilyofsolution.

简介：潮汐的流动是一个周期的运动不稳定、不一致，它显然有加速和减速过程，特别在沿海的浅水里。潮汐的流动雷纳兹应力的垂直分发从线性分发背离了的许多研究表演。潮汐的流动雷纳兹压力的寓言的分发被歌等建议。(2009)。尽管模型更好充满领域观察和室内的试验性的数据，它有潮汐的流动雷纳兹应力的更低的截断的系列扩大，并且对分发的描述不是很全面的。由介绍潮汐的流动的运动方程并且改善，寓言的分发由歌等建立了。(2009)，潮汐的流动雷纳兹压力的立方的分发被建议。立方的分发被领域数据验证很好(Bowden和Fairbairn，1952；Bowden等，1959；Rippeth等，2002)并且试验性的数据(Anwar和阿特金斯，1980)，与Kuo等的数字模型结果一致。(1996)，并且与潮汐的流动雷纳兹压力的寓言的分发相比。这立方的分布比寓言的分发，而且罐头不仅好，这更好被显示出反映与潮汐的流动减速与潮汐的流动加速并且向上向下从线性分发背离的雷纳兹应力的基本特征，为潮汐的流动的速度侧面上的进一步的学习的基础。

简介：TheavailabledataontidalcurrentsspanningperiodsgreaterthansixmonthsforthecontinentalshelfoftheEastChinaSea(26°30.052′N,122°35.998′E)wereanalyzedusingseveralmethods.TidalCurrentHarmonicAnalysisresultsdemonstratedthatsemi-diurnaltidesdominatedthecurrentmovement.Thetidalcurrentsoftheprincipaldiurnalandsemidiurnalrotatedclockwisewithdepth,withthedeflectionofthemajorsemi-axestotherightintheupperlayerandtotheleftinthelowerlayer.Theverticalstructuresoftwoprincipalsemi-diurnalconstituents-M2andS2-weresimilar,whichindicatesthatthetidalcurrentsaremainlybarotropicinthisarea.Themainfeaturesofthevariationofthefourprincipaltidalconstituentswithdepthdemonstratethatthecurrentsinthisregionareinfluencedbytheupperandlowerboundarylayers.Therefore,thetidalconstituentsoftheshallowwateraresimilar.DifferentverticalmodeswerecalculatedbasedontheEmpiricalOrthogonalFunction(EOF)analysisoftheEasternandNortherncomponentsofthetidalcurrents,withavariancecontributionforthezero-ordermodelofatleast90%.Thevariancecontributionofthebaroclinicmodelisminimal,whichfurtherrevealsastrongbarotropiccharacterforthetidalcurrentsofthisregion.

简介：由在20052007的春天和秋天期间从30架班机在诺思中国上分析在空中的观察，在在诺思中国的各种各样的地点的0.3%过度饱和的喷雾器和云冷凝作用原子核(CCN)的垂直分布的特征被调查。测量采样在象平原，高原，和海那样的不同表面上被进行。结果证明累积模式喷雾器的数字集中比在春天在秋天是更大的，但是颠倒为CCN是真的。这意味着有比100nm小的直径的更多的喷雾器能在春天作为CCN被激活，并且这能导致更高的喷雾器激活效率。在Taihang山附近的平原上的喷雾器激活效率比在秋天在春天是更大的，并且它比在土地上在海上是更大的。在在Bashang高原上的边界层上面的喷雾器激活效率是很低的。基于一阵喷雾器和CCN的否定指数的垂直分布，象在诺思中国上的喷雾器激活效率一样的喷雾器和CCN的一个空间parameterization模型被建议。因为它被喷雾器和周围的大气的条件的地区性的物理、化学的特征主要影响，结果证明喷雾器激活效率不清楚地依赖于高度。吝啬的喷雾器激活效率分别地是0.66，与在春天和秋天的0.70和0.53的价值。

简介：Young’sequationisafundamentalequationincapillarityandwetting,whichreflectsthebalanceofthehorizontalcomponentsofthethreeinterfacialtensionswiththecontactangle(CA).However,itdoesnotconsidertheverticalcomponentoftheliquid-vaporinterfacialtension(VCLVIT).ItisnowwellunderstoodthattheVCLVITcausestheelasticdeformationofthesolidsubstrate,whichplaysasignificantroleinthefabricationofthemicrofluidicdevicesbecauseofthewideuseofthesoftmaterials.Inthispaper,thetheoretical,experimental,andnumericalaspectsoftheproblemarereviewed.TheeffectsoftheVCLVIT-inducedsurfacedeformationonthewettingandspreading,thedeflectionofthemicrocantilever,andtheelasto-capillarityandelectroelasto-capillarityarediscussed.Besidesabriefreviewonthehistoricaldevelopmentandtherecentadvances,somesuggestionsonthefutureresearcharealsoprovided.

简介：Inthispaper,thebasicequationsgoverningtheflowandheattransferofanincompressibleviscousandelectricallyconductingfluidpastasemi-infiniteverticalpermeableplateintheformofpartialdifferentialequationsarereducedtoasetofnon-linearordinarydifferentialequationsbyapplyingasuitablesimilaritytransformation.Approximatesolutionsofthetransformedequationsareobtainedbyemployingtheperturbationmethodfortwocases,i.e.,smallandlargevaluesofthesuctionparameter.Fromthenumericalevaluationsofthesolution,itcanbeseenthatthevelocityfieldatanypointdecreasesasthevaluesofthemagneticandsuctionparametersincrease.Theeffectofthemagneticparameteristoincreasethethermalboundarylayer.Itisalsofoundthatthevelocityandtemperaturefieldsdecreasewiththeincreaseinthesinkparameter.

简介：ManyobservationsshowthatintheYellowSeainternaltidalwaves(ITWs)possesstheremarkablecharacteristicsofinternalKelvinwave,andintheSouthYellowSea(SYS)thenonlinearevolutionofinternaltidalwavesisoneofthemechanismsproducinginternalsolitarywaves(ISWs),whichisdifferentfromthegenerationmechanisminthecasewherethesemidiurnaltidalcurrentflowsovertopographicdrops.Inthispaper,themodelofinternalKelvinwavewithcontinuousstratificationisgiven,andanelementarynumericalstudyofnonlinearevolutionofITWsismadefortheSYS,usingthegeneralizedKdVmodel(GKdVmodelforshort)foracontinuousstratifiedocean,inwhichthedifferenteffectsofbackgroundbarotropicebbandfloodcurrentsareconsidered.Moreover,theparameterizationofverticalturbulentmixingcausedbyITWsandISWsintheSYSisstudied,usingaparameterizationschemewhichwasappliedtonumericalexperimentsonthebreakingofISWsbyVlasenkoandHutterin2002.Itisfoundthattheverticalturbulentmixingcausedbyinternalwavesisverystrongwithintheupperlayerwithdepthlessthanabout30m,andtheverticalturbulentmixingcausedbyISWsisstrongerthanthatbyITWs.