具有剪切流等離子體中一類新的相干結(jié)構(gòu)——三渦旋的研究.pdf

1、中國(guó)科學(xué)技術(shù)大學(xué)碩士學(xué)位論文具有剪切流等離子體中一類新的相干結(jié)構(gòu)——三渦旋的研究姓名：王舸申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：等離子體物理指導(dǎo)教師：陳銀華20050501AbstractRecentlyThephysicalbehaviorinplasmawithshearflowinitiatedmanyresearchers’interestGenerally，theshearflowwilllargelyinfluencethetranspo

2、rtbehaviorofthechargedparticlesintheplasmas，whichisanimportantfactortotriggertheLHmodeconversionOtherwise，Onenewclassofcoherentstructurestripolarvortex，whichisobservedintheplasmaswiththeshearflowiswidelyinvestigatedinlab

3、andspaceplasmaexperimentsDustplasmaismoreandmoreimportantintheapplicationofindustryandspacephysicsItiswellknownthatdustparticlescanabsorbthenegativelychargedelectronsandlargelyintluencethecollectivebehaviorofplasma，since

4、thelargeratiobetweenthemassofdustparticleandothersinplasmaleadstothenewspacescaleandtimescaleInthisarticle，westudyofleclassofcoherentstructuresoftripolarvortexConsideringtheshearedflowandshearedmagneticfieldwhichiscommon

5、inthethermonuclearplasmaandspaceplasma，weobtaintheanalyticsolutionoftripolarVortexatfirst，andsimulatethedynamicsoftripolarvortexInourstudyweresearchtheelectrostatictripolarvortexindustyplasmawithshearedflowandshearedmagn

6、eticfield，andobtainthecoupledequationsaboutlocaltripolarstructurewiththeassumptionthatthetimescalelengthisgreaterthantheinverseofthegyrofrequencyofthedustparticleThedynamicsofnonstationarytripolarvorticesisstudiedbythenu