【摘要】 在汽车内部安装若干传感器记录温度和湿度 ,并基于汽车在典型一天内行为状态 ,建立了关于汽车环境模拟的逻辑选择器 ,以及计算温度的指数模型和计算湿度的密闭箱模型 ,得到汽车内部的温度、湿度随时间变化的模拟方程。构建汽车模拟的二维有限元模型 ,采用流体动力学方法计算分析了汽车的内部环境随时间的变化 ,为汽车电子模块可靠性研究提供了设计基础更多还原

【Abstract】 Based on the experimental data of temperature and relative humidity examined by several sensors in a car during one day,the exponential model for temperature as a function of time and the closed box model for calculation of relative humidity are put forward With computational fluid dynamics(CFD)method,the finite model of car is built,then the relationship of temperature with time is demonstrated The value of the constant calculated from the CFD simulation agrees with the exponential model very well The results from the experments and simulations here can be adopted as an important basis for developing new technology of reliability design for automotive electronics更多还原