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URN etd-0206118-160351 Statistics This thesis had been viewed 147 times. Download 0 times. Author Chin-Kang Huang Author's Email Address No Public. Department Mechanical Engineering Year 2017 Semester 1 Degree Master Type of Document Master's Thesis Language zh-TW.Big5 Chinese Page Count 102 Title Analysis, Design and Optimization of Expanded Mufflers with Spiral Extended Tubes Keyword FEM Neural Network comsol Spiral Tubes Muffler Spiral Tubes Muffler comsol Neural Network FEM Abstract COMSOL, a multiple physical quantities coupled with numerical analysis software, is adopted in the acoustical analysis in the thesis. The primary purpose of the research is to analyze and design the spiral tubes mufflers by adding baffles, extended tubes, perforated tubes and sound absorbing material.
The thesis includes two parts: (1)An assessment of the acoustical performance for the spiral tubes muffler. Here, the acoustical effect of the pitch、the diameter of the internal extended tubes and the quantity of internal baffles will be discussed. (2)A best allocation of the muffler with an spiral extended tubes will be explored by using the artificial neural network in conjunction with the GA optimizer.
Consequently, the spiral tubes muffler is designed and improved by using the COMSOL during the optimal process. With this analysis, the relevant effects of geometric dimensions with respect to the acoustic performance and targeted frequency will be recognized.
Advisor Committee Ying-Chun Chang - advisor
Min-Chie Chiu - co-chair
Shih-Pin Liaw - co-chair
Files Date of Defense 2018-01-26 Date of Submission 2018-02-06