广工电磁学实验报告

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1、广东工业大学考试试卷(A)课程名称:Experimentalreportsfor“Theoryofelectromagneticfieldandmicrowavetechnology”试卷满分100分考试时间:2012年月日(第周星期)题号一二三四五六七八九十总分评卷得分评卷签名复核得分复核签名PleaseanswerthequestionsinEnglish.一．Aninfinitelongslot,withrectanglecross-section,consistsofthreegroundedc

2、onductiveplateandonecoverplatewith100voltage.Pleasegivethepotentialdistributionsinsideslot(followingthebelowinstructions).(必修题)1)pleasedemonstratetheideasandproceduresonhowtodeducethisproblem;2)pleaselistthedetailedprogramcodes.3)Pleasedrawfiguresaboutpo

3、tentialdistributions.Ans:1)pleasedemonstratetheideasandproceduresonhowtodeducethisproblem;1.1Finitedifferencemethod(FDM)Finitedifferencemethod(FiniteDifferenceMethod)isbasedontheprincipleofdifferentialAnumericalmethod,whichtheelectromagneticfieldwithinth

4、eproblemintodiscretecontinuoussystemproblems,whichusesthenumericalsolutionofdiscretepointstoapproximateacontinuousrealsolutiondomainTherefore,itisanapproximatecalculation.Usingthefinitedifferencemethod[4,5]forsolvingelectromagneticfieldproblems,thefirstf

5、ieldwillbesplitintomanyseekinggridandnode,andinsteadofusingderivativedifferencequotient,then,willbeintheFieldofpartialdifferentialequations[3]intothepotentialofeachnodeisunknownormagneticpotentialdifferenceequations,bysolvingtheequationscanbeobtainedupon

6、requesteachdiscretenodepotentialormagneticpotentialofthenumericalsolution.Dfieldboundaryconditions:AsdescribedintheelectromagneticfieldPDEfunctionofthespatialcoordinates,sothatonlyaspecificsetofboundaryconditionstoobtainauniquesolution.Mostofelectromagne

7、ticproblemsinvolvingthreetypesofboundaryconditions:Diliheliboundarycondition,Newman-typeboundaryconditionsandmixedboundaryconditions.DilihelitypeboundaryconditionsandNeumannboundaryconditioncommonlyreferredtoasthefirstboundaryconditionandthesecondboundar

8、ycondition,mixedboundaryconditionsforthefirstboundaryconditionandasecondlinearcombinationofboundaryconditions.1.1.1LaplaceequationfinitedifferenceformTwo-dimensionalLaplaceequationusingfinitedifferencemethodcanapproximatec