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时间:2017-07-29
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1、CENTRALSOUTHUNIVERSITY本科生毕业论文(设计)题目热动专业毕业论文设计规范性标准研究学生姓名******指导教师******副教授学院能源科学与工程学院专业班级热动030*完成时间2007年6月10日5中文题目不超过20字,不用不常见的英文缩写摘要:摘要一般不分段,以精练的语言对论文(设计)的内容、观点、方法、成果和结论进行高度概括,具有独立性和自含性,自成一篇短文、富有报道色彩。中文摘要以350字为宜。用第三人称编写,简短精炼,明确具体。摘要格式要规范,不能出现本文、论文、我们、作者、笔者等类似字样,不能出现数学公式、插图、
2、表格、参考文献序号等。摘要中可以应用黑体明确列述论文设计的创新点(新理论,新观点,新技术,新工艺等),以便于创新性知识的发现,提取和评价。英文摘要同中文一致。尽量少用特殊字符及由特殊字符组成的数学表达式。其它摘要写作技巧可参考http://www.ei.org.cn/doca/yq.doc。关键词:关键词1;关键词2;要求4-8个;用分号隔开;最后不加句号5ThermalConductivityofThermalConductivityonThermalConductivityofThermalConductivityABSTACTThermal
3、conductivityisoneofthemostimportantparametersofthermo-physicalpropertiesofmaterials.Aclassicalthermalconductivitymeasurementmethod,namedperiodicheatingmeasuringtechnique,hasbeendevelopedinthisresearch.Accordingtosomeliteratures,ananalyticalsolutionforthismeasurementhasbeenpro
4、posed,andtheformulatocomputethermalconductivityhasbeenconducted.Basedontheresultabove,theformulasoftwotraditionalanalyticalsolutionshavebeenmodified.Althoughgreateffortshavebeenmadebymanyresearchers,itisusuallyveryhardtoobtainstandardsinetemperaturewavesinexperimentsbyusingth
5、ismeasuringtechnique,andthiswillcauseerrors.Tosolvethisissue,ameasuringsystemhasbeendevelopedbyemployingmodernelectricalfacilitiesanddataacquisitionapparatus.Standardsinetemperaturewaveshavebeenachievedinexperiments,anderrorshavebeendecreased.Numericalsimulationtechniquehasal
6、sobeenadoptedinthisresearch.Theadvantagesmakinguseofthistechniqueareasfollows.(i)Thedesignofthemeasuringsystemwassimplified.(ii)Thedeterminationtimewassaved.(iii)Theerrorwasdecreased.Thermalconductivitiesofseveralsampleshavebeendetermined,andtheresultsshowedthatthemaximumerro
7、rbyadoptinganalyticalsolutionandnumericalsimulationwerelessthan4%and3%respectively.Itapprovedthatitwasreliabletodeterminethermalconductivitiesofmetalsandalloysbyusingthismeasuringsystem,anditalsoshowedthatitwasaneffectivewaytostudyheatconductionproblemsbyexperimentalstudycomb
8、inedwiththeoryanalysisandnumericalsimulation.Keywordsthermalconducti
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