| Summary: | 碩士 === 國立臺灣大學 === 應用力學研究所 === 104 === In this research, we constructed a simple mathematical modal to describe the operation of single tube Coriolis mass flowmeter (CMF) with the suitable conditions and discuss some related issues including looking for the optimal positions of sensors, adjust mass and the dominant design factors of single tube CMF. These contribution would assist the cooperator to develop the related products.
First of all, we utilized modal expansion method to solve the equation of motion for single tube CMF and verify our mathematical modal by MATLAB algorithms. Secondly, we could obtain natural frequency and displacement of vibrating tube from our mathematical modal. After that sensitivity of single tube CMF and measure time difference could be calculated. Thirdly, global optimization was applied for the sensor position, adjust mass position so that we could get the maximum sensitivity. Furthermore, the dominant design factors were found out that would help for constructing our own experimental facility in the future. Finally, in order to compare the results between ANSYS and MATLAB, we set up a fluid structure interaction simulation model, calculate the natural frequency and measure time difference successfully.
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