基于Fluent的双加热湿度传感器传热性能分析  

Analysis of heat transfer performance of twin heated humidity sensor based on Fluent

作　　者：杨杰[1,2] 刘清惓[3,4] 戴伟[1,2] 龚定祺 

机构地区：[1]中国气象局气溶胶与云降水重点开放实验室,江苏南京210044 [2]南京信息工程大学大气物理学院,江苏南京210044 [3]江苏省气象探测与信息处理重点实验室,江苏南京210044 [4]南京信息工程大学电子与信息工程学院,江苏南京210044

出　　处：《传感器与微系统》2014年第10期32-35,39,共5页Transducer and Microsystem Technologies

基　　金：国家公益性行业(气象)科研专项重点项目(GYHY200906037);国家自然科学基金资助项目(41075026);江苏高校优势学科建设工程(传感网与现代气象装备)项目;江苏省科技支撑计划重点项目共同资助项目(BE2011006)

摘　　要：双加热湿度传感器可实现大气湿度连续探测。液滴、冰晶等水凝物覆盖在双加热湿度传感器表面,容易导致其测量精度和响应速度降低。为了提高测量精度和响应速度,有必要对双加热湿度传感器进行除湿处理。采用Pro/E建立4种尺寸的双加热湿度传感器三维模型;利用ICEM CFD中模块化的方法对模型进行分网,得到了较高的网格质量,降低了计算时间,提高了计算精度;利用Fluent稳态分析模拟出2只湿度传感器不同间距下的相互影响情况,瞬态分析模拟出升温时间和降温时间特性。根据仿真结果,提出高空和低空2种模式加热策略。Twin heated humidity sensor can achieve continuous detection of atmospheric humidity. Hydrometeors like liquid,ice crystals will cover on the surface of twin heated humidity sensor, which makes it easy to lower measuring precision and response speed. In order to improve measuring precision and response speed, it is necessary to dry the twin heated humidity sensor. Software like Pro/E is used to build 3D model of four kinds of size of twin heated humidity sensor;modular method of ICEM CFD is used to mesh heated twin humidity sensor by which a higher quality of mesh is obtained, calculation time is reduced and calculation precision is improved; Fluent method is used, steady-state analysis has been implemented to simulate interaction of the twin humidity sensors with different spacing, transient analysis has been carried out to simulate charactenstics of heating and cooling time. Two different heating strategies, high-altitude and low-altitude modes, are proposed based on simulation results.

关 键 词：气象观测 双加热湿度传感器 加热策略 计算流体动力学 瞬态分析 

分 类 号：TN304.93[电子电信—物理电子学]