非光滑结构对车身表面气流特性的影响分析的中期报告.docx

非光滑结构对车身表面气流特性的影响分析的中期报告
摘要：
本报告主要针对非光滑结构对车身表面气流特性的影响进行了中期研究。首先介绍了非光滑结构的概念及应用范围，并对其与气流特性的关系进行了阐述。接着，针对常用的车身非光滑结构进行了分类和对比分析，分析结果表明凹凸不平的表面结构会显著影响车身周围的气流场，而光滑的表面结构较少对气流特性造成影响。然后，对影响气流特性的非光滑结构进行了数值模拟，通过流场可视化、压力分布、速度分布和阻力系数等参数的分析，得到了非光滑结构对车身周围气流特性的影响规律。最后，提出了更进一步的研究方向和重点。
关键词：
非光滑结构；车身表面；气流特性；数值模拟；影响规律
Abstract:
Thisreportmainlyfocusesonthemid-termstudyoftheinfluenceofnon-smoothstructuresontheairflowcharacteristicsofthevehiclebodysurface.Firstly,theconceptandapplicationrangeofnon-smoothstructureswereintroduced,andtherelationshipbetweenthemandairflowcharacteristicswasexplained.Secondly,thecommonlyusednon-smoothstructuresofthevehiclebodywereclassifiedandcompared.Theanalysisresultsshowedthattheunevensurfacestructuresignificantlyaffectedtheairflowfieldaroundthevehiclebody,whilethesmoothsurfacestructurehadlittleeffectontheairflowcharacteristics.Then,thenon-smoothstructuresthataffecttheairflowcharacteristicswerenumericallysimulated.Throughtheanalysisofflowfieldvisualization,pressuredistribution,velocitydistributionanddragcoefficient,theinfluencelawofnon-smoothstructuresontheairflowcharacteristicsaroundthevehiclebodywasobtained.Finally,furtherresearchdirectionsandkeyissueswereproposed.
Keywords:
Non-smoothstructure;Vehiclebodysurface;Airflowcharacteristics;Numericalsimulation;Influencelaw.