HT-7托卡馬克限制器熱負(fù)荷沉積分布研究.pdf

1、中國科學(xué)院合肥物質(zhì)科學(xué)研究院碩士學(xué)位論文HT7托卡馬克限制器熱負(fù)荷沉積分布研究姓名：高峰申請學(xué)位級別：碩士專業(yè)：等離子體物理指導(dǎo)教師：陳俊凌20070524AbstractGaoFeng(Major：plasmaphysics)DirectedbyChenJunlingThispaperismainlytostudytheheatfluxdepositionpattemsonthelimitersurfaceofHT7tokamakAp

2、hysicalmodeloftheedgeplasmaforHT7tokamakisestablishedaccordingtOthebasictheoreticsofplasmaandsurfaceinteractionsandtheactualdataofHT_7tokamakUsingthismodeltheheatfluxdepositiononthesurfacesofthemovablelimiterandthetoroid

3、allimitersiSsimulatedwithANSYScode，afiniteanalysiscodeOnthebaseoftheestablishededgeplasmamodelandthecircularcrosssectionoftheHT一7tokamakvessel，theheatfluxdepositionpatternsonthemovablelimiterunderlongpulsedischargesaresi

4、mulatedBothparallelandperpendicularheatfluxesaretakeninto—accountThe一resultsmatchtheIRcameradataverywellandsomeparametersinfluencingthesimulationresultsarealsodiscussedMoreover，thecarveofthesmallradiiofthelastclosedfield

5、surface(LCFS)changingwiththetoroidalangleisobtainedaccordingtotheelectromagnetictheoreticsAmodeloftheHT7LCFSconsideringtherippleeffectisestablishedinMatLabTheheatfluxdepositionpattemonthetoroidallimiteristhensimulatedThe

6、resultsareobtainedbothinsteadystateandtransientanalysisThepatternsoftheheatfluxdepositionandtemperaturechangingwiththecenteroftheLCFSarepresentedThecomparisonismadebetweentheheatfluxdepositionpatternsonthelimiterwithandw

7、ithouttheshapedtilesTheshapedtilesplayallimportantpartinreducingtheheatfluxdepositionandhotspotgenerationTheheatfluxdepositingontheendlocatedatthepositionofatoroidal—fieldcoil(TFcoil)ismuchsmallerthanthatbetweentwoTFcoil