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时间:2020-04-16
《自伴不定问题的WOPSIP方法的两水平加性Schwarz预条件子-论文.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、第31卷第3期黑龙江大学自然科学学报VoL3lNo.32014年6月JOURNALOFNATURALSCIENCEOFHEILONGJIANGUNIVERSI,ⅣJune,2014DOI:10.13482/j.issnl001—7011.2014.01.239Atwo-leveladditiveSchwarzpreconditionerwithWOPSIPmethodsfornon--self-aajointandindefiniteproblemsWANGChun.mei,YANShi-jian(1.SchoolofMathematicalSciences,NanjingNormalUn
2、iversity,Nanjing210023,China;2.TaizhouCollege,NanjingNormalUniversity,Taizhou225300,China)Abstract:Theweaklyover—penalizedsymmetricinteriorpenalty(WOPSIP)methodhastheuniquefeaturethat(i)itsatisfiesthecorrecterrorestimatesinboththeenergynormandtheL2norin,and(ii)itdoesnotrequirethetuningofapenaltypa
3、rameter.Furthermore,thesimplicityofthebilinearformmakestheprogrammingoftheWOPSIPmethodveryeasy,andthematrixrepresentingthebilinearformalsohasaninterestingstructurewithbuilt—inparallelism.Atwo—leveladditiveSchwarzpreconditionerwithWOPSIPmethodsfornon—self-adjointandindefiniteproblemsisproposedandan
4、alyzed.Thecondi-ti。nnumberisb0undedby(1+max等),whereand讪rerespectivelythedi砌eter0fsubd咖inQandtheamountofoverlapbetweenneighboringsubdomains.Keywords:non—self-adjointandindefinite;two—level;additiveSchwarz;preconditioner,weaklyO—ver-penalized;interiorpenaltyCLCnumber:0241.6Documentcode:AArticleID:10
5、01—7011(2014)03—0296—06自伴不定问题的WOPSIP方法的两水平加性Schwarz预条件子王春梅,颜世建(1.南京师范大学数学科学学院,南京210023;2.南京师范大学泰州学院,泰州225300)摘要:弱过度惩罚对称内罚方法(WOPSIP),是一种间断有限元方法,其主要特点是它满足能量范数和£范数的正确的误差估计,且它不要求调整罚参数。此外,由于双线性形式比较简单,使得WOPSIP方法的编程比较简单,且程序易于实现并行。提出了非自伴不定问题的WOPSIP方法的两水平加性Schwarz预条件子。条件数有界,界为(1+max等),其中和分别为子区域Q的直径和相邻子区域之间
6、的重叠度。关键词:非自伴不定;两水平;加性Schwarz;预条件子;弱过度惩罚;内罚Receiveddate:2013—09—16Foundationitem:SupportedbytheProjectofGraduateEducationInnovationofJiangsuProvince(CXZZ13—0387)Biography:Ms.WANGChun—mei(1982一),lecturer,Ph.D.candidate,interestedin:numericalmethodsofpartialdiferentialequations,E-mail:chunmeisuzhou@l
7、63.colnCorrespondingauthor:Mr.YANShi-jian(1944一),professor,interestedin:numericalmethodsofpartialdifferentialequationsCitethis:WANGChun-mei,YANShi-jian.Atwo-leveladditiveSchwarzpreconditionerwithWOPSIPmethodsforn
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