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ID:37372294
大小:2.57 MB
页数:103页
时间:2019-05-22
《电弧等离子体流场及螺旋不稳定性数值研究》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、大连理工大学博士学位论文电弧等离子体流场及螺旋不稳定性数值研究姓名:郑殊申请学位级别:博士专业:等离子体物理指导教师:宫野;刘悦20070801电弧等离子体流场及螺旋不稳定性数值研究最后,给出本文研究工作的主要结论及对未来工作的展望。关键词:螺旋不稳定性;电弧等离子体发生器;等离子体反应器;二维数值模拟大趣工大学博士学位论文Abstraet.11”plasmaofa∞dischargehasmanycharacteristicssuchashighertemperature,focusofpowerandcontrollablereaction,ete.Ithasbeenap
2、pliedwidelyinindustriesandothernewtechnologydomain.ItiSneededtodesigntheal-cplasmageneratorwhichcanprodtaeolargeareasandun趱ol'mplasmaa∞withhighercurrentandmanyatmospheliepressures.Butbecalt,∞oftheexperimentandteelmologytimited,itisstillinthehalfexperimentstate.Therefore.research011theequili
3、briumandhelicalmagneticinstabilitiesofarcplasmaisaveryimportantsubject.Alsopreviousstudiesarcmostlyneeded80111eassumptionsandgetsomeapproximateresults.Henceitisrequiredtothero瓣somenumericalstudies011theevoludonofareplasma.11leresearelaresultsonthehe砒transferandfluidflowinlbcDClifoplasmagene
4、ratorandtheplasmal-l冀lctor啪givetheinformationindesigningbigcurrentarcplasmagenerator,andtheyalsoc粗becomparedwiththeexperimenLn,isthesisresearchesthroughthelaeliealimtabi】ityof黜plasmasandthecharacteristicsofheattransferandfluidflowofarcplasma.11”helicalarcisdescribedbytheelectromagneticequat
5、ionsinallelectrostaticapproximateonandtheequationsa聆solvedbylinearperturbationtheory.Andthegrowthratoofthehdiealinstabilitycanboevaluated;Alsotheevolutionoftheheattransferandfluidflowiscomputed.卫"contclltsale:Firstly,basicconceptandcharacteristicofarcplasma,significanceofrese,缸elaanddevelop
6、mentactualitya"introduced.Secondly,theamlytiealmethodandlinearperturbationtheorya∞adoptedtosolvetheelectromagneticequatiom.Especiallytheradiati∞modelstitlepresentedandtheexplicitanalyticexpressionsa∞derivedintheprcseneeofthoradiate011transferenergy,fromwhichthehelicalimtabilitiesofarcscanbe
7、given.ItiSfoundthat,incomparisonwiththeresultswithoutradiation,thearcstablollrellisreduced.Thirdly,theeffectsoftheex-mmlaxialma删cfieldOna∞numerieaUystudied.ThemagnetohydrodymmieequationsinallelectrostaticapproximationSeI'Ve弱thestartingpointoftlaetheoryan
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