电子鼻鼻腔结构对嗅觉能力影响的数值模拟

摘要

To research the electronic nose performance affected by the nasal cavity structure of electronic nose and the arrangement of sensor array, by using the Fluent module in ANSYS Workbench, this paper made the numerical simulation of fluid characteristics during the gas transferred in different nasal cavity structure. The paper analyzed the odor concentration distribution in the sensor sensitive element when it was in different nasal cavity structure and in different location of sensor array. Then the paper discussed the ways how to increase the odor concentration in the sensor sensitive element, so as to improve the olfaction ability of electronic nose. The results indicate that both the nasal cavity structure and the sensor location have the influence on the olfaction ability of electronic nose. The results also indicate that the method which using ANSYS to make the optimization design for the nasal cavity structure of electronic nose is effective and feasible.%为了研究电子鼻鼻腔结构和传感器阵列的布置对电子鼻工作性能的影响,利用ANSYS Workbench中Fluent模块,对电子鼻不同鼻腔结构气体传输过程中的流体特性进行了数值模拟,分析不同鼻腔结构和传感器阵列的位置对传感器敏感元件处的气味浓度分布情况,讨论了如何提高传感器敏感元件处气味浓度,以便提高电子鼻的嗅觉能力.结果表明:电子鼻鼻腔结构和传感器位置对电子鼻嗅觉能力均有影响；利用ANSYS对电子鼻鼻腔结构进行优化设计的方法是有效、可行的.