基于Fluent的气敏特性测试室设计与流场分析

Design and flow field analysis of test-room for gas sensing characteristics based on fluent

气敏特性测试室是气体传感器气敏性能研究的关键部件,针对测试室设计中经常出现的气体层流分布不均、测试数据波动大、气体选择性差等缺陷。采用软件模拟指导设计的方法,设计了一种气体传感器测试室,通过Fluent软件对其进行有限元建模和流体力学仿真。仿真和试验结果表明,该测试室结构简单、阻力小、气体层流稳定,能实现对气体传感器的高精度、高选择性测试。

Gas sensitivity test-room is the key component of the gas sensor sensitivity test. In order to solve the defects in the design of test-room, such as uneven distribution of gas laminar flow, large fluctuation of test data, poor gas selectivity and so on. We have designed a gas sensor test-room by adopting the method of software simulation. We have completed the finite element modeling and hydrodynamics simulation of the test-room by using Fluent software. Simulation and test results show that the test-room is sirnple in structure, small in resistance and stable in gas laminar flow. It can achieve high precision and high selectivity test for gas sensor.