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| Numerical Simulation Analysis of Rubidium Lamp Life Prediction and Type Selection Based on ANSYS |
| YAO Li1,2,WANG Zhou1,2,WANG Xiao-li1,2,GE Jiu-zhi3,TAN Li-cheng1,2,ZHU Xi1,2,TAO Hai-zheng4 |
1. School of Automotive Engineering, Wuhan University of Technology, Wuhan, Hubei 430070, China
2. Hubei Key Laboratory of Advanced Technology for Automotive Components, Wuhan University of
Technology, Wuhan, Hubei 430070, China
3. Hubei Institute of Measurement and Testing Technology, Wuhan, Hubei 430223, China
4. State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan, Hubei 430070, China |
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Abstract The consumption of metal rubidium in rubidium lamp is the main factor determining the working life of rubidium atomic clock. In order to predict the working life of rubidium lamp, based on the similarity of transient heat conduction equation and unsteady mass diffusion equation in mathematical form, a rubidium diffusion model was established to predict the working life of Schott 8436 glass rubidium lamp by using the finite element software ANSYS, The accuracy of the model is verified by comparing the predicted results of the finite element model with the seven-year rubidium measurement data of Wuhan Institute of physics and mathematics, Chinese Academy of Sciences. Through the verified finite element model, the influence of Schott 8436 glass rubidium bulb volume and external profile curvature on rubidium consumption under the same diffusion area is discussed. The relevant results provide theoretical support for the selection of glass rubidium bulb.
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Received: 18 August 2021
Published: 18 July 2022
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2022, Vol. 43 
