Research on Factors Leading to Variant Aerodynamic Drag Coefficient of Different Cabriolets

来源 :2015中国汽车工程学会年会 | 被引量 : 0次 | 上传用户:idcwang
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
  Aerodynamics simulations on different types of cabriolets and a coupe were performed by utilizing the valid numerical simulation model in commercial CFD code FLUENT.The validation was verified by using the international standard MIRA reference model.By analysing eddy dissipation,flow separation scale and pressure variation in the flow field,the reasons for variable aerodynamics drag coefficient for different cars listed in this paper were found.Research has confirmed that eddy dissipation,flow separation scale and pressure variation in the flow field all have an impact on aerodynamics drag and decreasing eddy dissipation and flow separation scale,increasing cabin pressure the cabriolet can effectively lower the aerodynamic drag coefficient of cabriolets.
其他文献
流体搅拌是化工工业过程中重要的单元操作,在要求传热面较大、工作介质为高粘体系或某些气液两相体系等工业过程中,多层桨搅拌槽被广泛应用。目前有关多层桨搅拌槽流场的文献集
  In this paper,the BIW of a domestic car establishes a finite element analysis model,with the stiffness and modal of BIW as the constraints,the thickness,siz
会议
  自动变速器与汽油发动机的合理匹配是保证整车动力性和燃油经济性的关键因素之一,而液力变矩器的选型又是自动变速器匹配开发的核心要素之一,本文理论联系实际,说明AT 液力
  本文主要介绍了尼龙材料NTE264 与PA66+GF33 在分离轴承套筒上的应用对比,通过真圆度测量试验、滑动磨损试验、耐温试验和吸水性试验对比了两种材料在尺寸精度、摩擦性能
  A finite element model for the control arm of an electric vehicle is established in Hypermesh software and a mode analysis is conducted by Optistruct solver
会议
  提出同步容量的概念,作为评价同步器总成综合性能的指标,分析了DCT 中同步器换档的特点、换档力与同步时间的关系,详细定义强制摘档力的组成及其计算,最后通过试验验证表明计
胆甾醇作为一种广泛存在的天然甾体资源,可以用于甾体药物合成、化妆品和液晶材料领域。羊毛脂来源于洗毛工业废水,其水解后的产物羊毛脂醇中富含胆甾醇和羊毛甾醇。本文以羊毛脂醇为原料,研究了提取胆甾醇的相关问题,提出了以分子蒸馏法结合溶剂选择性结晶分离提取胆甾醇的工艺路线。此工艺对环境友好,同时可回收羊毛甾醇。建立了羊毛脂醇中胆甾醇的反相高效液相色谱分析方法。保留时间定性,外标法定量。胆甾醇的加标回收率为
  本文通过研究对时域信号进行等角域重采样的阶次分析方法,来分析由变速器传动结构关系确定的变速器阶次,从而识别变速器啸叫噪声源,进而进行优化控制。该方法是确定变速器啸
  A B class economical car equipped with front Macpherson and rear twist beam is investigated,the aim is developing a twist beam to achieve the design require
会议
  本文应用GT-Power 软件,建立某1.6L 发动机可变进气歧管性能仿真模型,分析影响发动机性能的关键因素,并对可变进气歧管主要结构参数进行优化计算,设计满足布置要求的可变进气